subject:(iron oxide)

1. Ho, Don N. Iron Oxide, Gold-Silver Alloy, and Heterostructure Nanoparticles for Magnetic and Optical Theranostic Applications.

Degree: PhD, Chemistry, 2013, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:320491/

► Theranostics is the ability to diagnose with greater detail to disease properties and tailor specialized therapeutic regiments to a patient's unique case. Advancements in nanoparticle… (more)

▼ Theranostics is the ability to diagnose with greater detail to disease properties and tailor specialized therapeutic regiments to a patient's unique case. Advancements in nanoparticle synthesis for controlled material properties and further functionalization make the nano-scale materials promising candidates as a theranostic platform for predictive medicine, early detection, targeted therapy, and diagnostic monitoring. Here we examine iron oxide, gold-silver alloy, and gold-iron oxide dumbbell-like heterostructure nanoparticles for their combined diagnostic and therapeutic application. Iron oxide nanoparticles are used clinically as MRI contrast agents and also provide a platform for functionalization and further application of their magnetic properties. We examine the targeting of iron oxide to tumor vasculature using the tumstatin peptide in a three-dimensional in vitro tumor model and observe the therapeutic heating abilities in an alternating magnetic field. Surface enhanced fluorescence from nano-sized metal materials occurs through near-field coupling of the local electromagnetic field. We focus on controlling the surface plasmon resonance of AuAg alloy nanoparticles (AuAgNP) with a tunable method for transferring energy with fluorescent proteins. We examine the synthesis, surface modification, and localization of AuAgNPs to protein targets. We use fluorescein isothiocyanate as a model fluorophore to measure optimal energy transfer conditions. We examine green fluorescent protein as a target protein fluorophore for the protein model. Determination of alloy content, distance control, and targeting abilities for enhanced fluorescence can optimize current fluorescence imaging techniques and quantitative assays with greater sensitivity. Advanced hetero-structure nanoparticles offer added material properties and chemical functionalization over single component nanoparticles. We examine the controlled diagnostic and therapeutic capabilities of the dumbbell-like hetero-structure of gold-iron oxide nanoparticles for targeted in vivo pancreatic cancer MRI enhancement. Advisors/Committee Members: Sun, Shouheng (Director), Kim, Eunsuk (Reader), Webster, Thomas (Reader).

Subjects/Keywords: iron oxide

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APA (6^th Edition):

Ho, D. N. (2013). Iron Oxide, Gold-Silver Alloy, and Heterostructure Nanoparticles for Magnetic and Optical Theranostic Applications. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:320491/

Chicago Manual of Style (16^th Edition):

Ho, Don N. “Iron Oxide, Gold-Silver Alloy, and Heterostructure Nanoparticles for Magnetic and Optical Theranostic Applications.” 2013. Doctoral Dissertation, Brown University. Accessed September 20, 2019. https://repository.library.brown.edu/studio/item/bdr:320491/.

MLA Handbook (7^th Edition):

Ho, Don N. “Iron Oxide, Gold-Silver Alloy, and Heterostructure Nanoparticles for Magnetic and Optical Theranostic Applications.” 2013. Web. 20 Sep 2019.

Vancouver:

Ho DN. Iron Oxide, Gold-Silver Alloy, and Heterostructure Nanoparticles for Magnetic and Optical Theranostic Applications. [Internet] [Doctoral dissertation]. Brown University; 2013. [cited 2019 Sep 20]. Available from: https://repository.library.brown.edu/studio/item/bdr:320491/.

Council of Science Editors:

Ho DN. Iron Oxide, Gold-Silver Alloy, and Heterostructure Nanoparticles for Magnetic and Optical Theranostic Applications. [Doctoral Dissertation]. Brown University; 2013. Available from: https://repository.library.brown.edu/studio/item/bdr:320491/

University of Wollongong

2. Ta, Thi Dinh. Molecular dynamics simulation of adsorption and lubrication of hydrocarbons and aqueous copolymer lubricants on iron and iron oxide surfaces.

Degree: PhD, 2016, University of Wollongong

URL: 0299 OTHER PHYSICAL SCIENCES, 0399 OTHER CHEMICAL SCIENCES, 0999 OTHER ENGINEERING ; https://ro.uow.edu.au/theses/4912

► A classical molecular dynamics (MD) simulation has been used to investigate the adsorption and tribological performance of hydrocarbon lubricant between different iron and iron… (more)

Subjects/Keywords: molecular dynamics; adsorption; alkane; iron; iron oxide

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APA (6^th Edition):

Ta, T. D. (2016). Molecular dynamics simulation of adsorption and lubrication of hydrocarbons and aqueous copolymer lubricants on iron and iron oxide surfaces. (Doctoral Dissertation). University of Wollongong. Retrieved from 0299 OTHER PHYSICAL SCIENCES, 0399 OTHER CHEMICAL SCIENCES, 0999 OTHER ENGINEERING ; https://ro.uow.edu.au/theses/4912

Chicago Manual of Style (16^th Edition):

Ta, Thi Dinh. “Molecular dynamics simulation of adsorption and lubrication of hydrocarbons and aqueous copolymer lubricants on iron and iron oxide surfaces.” 2016. Doctoral Dissertation, University of Wollongong. Accessed September 20, 2019. 0299 OTHER PHYSICAL SCIENCES, 0399 OTHER CHEMICAL SCIENCES, 0999 OTHER ENGINEERING ; https://ro.uow.edu.au/theses/4912.

MLA Handbook (7^th Edition):

Ta, Thi Dinh. “Molecular dynamics simulation of adsorption and lubrication of hydrocarbons and aqueous copolymer lubricants on iron and iron oxide surfaces.” 2016. Web. 20 Sep 2019.

Vancouver:

Ta TD. Molecular dynamics simulation of adsorption and lubrication of hydrocarbons and aqueous copolymer lubricants on iron and iron oxide surfaces. [Internet] [Doctoral dissertation]. University of Wollongong; 2016. [cited 2019 Sep 20]. Available from: 0299 OTHER PHYSICAL SCIENCES, 0399 OTHER CHEMICAL SCIENCES, 0999 OTHER ENGINEERING ; https://ro.uow.edu.au/theses/4912.

Council of Science Editors:

Ta TD. Molecular dynamics simulation of adsorption and lubrication of hydrocarbons and aqueous copolymer lubricants on iron and iron oxide surfaces. [Doctoral Dissertation]. University of Wollongong; 2016. Available from: 0299 OTHER PHYSICAL SCIENCES, 0399 OTHER CHEMICAL SCIENCES, 0999 OTHER ENGINEERING ; https://ro.uow.edu.au/theses/4912

University of Utah

3. Gorenc, Marko Anton. Petrophysical and diagenetic characteristics of the permian white rim sandstone, southeast utah.

Degree: MS, Geology & Geophysics, 2015, University of Utah

URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3996/rec/1844

► The Permian White Rim Sandstone of southeast Utah is a distinctive, porous and permeable, white-colored unit surrounded by fine-grained red beds. In the Elaterite Basin,… (more)

▼ The Permian White Rim Sandstone of southeast Utah is a distinctive, porous and permeable, white-colored unit surrounded by fine-grained red beds. In the Elaterite Basin, the White Rim Sandstone is well exposed and acts as a reservoir for tar. White Rim deposits are dominantly eolian in origin, but a thin (0.5-6 meters thick) veneer of shallow marine deposits blankets an erosional paleotopographic high in the Elaterite Basin. Superimposed on the depositional facies are three diagenetic facies that impart white (bleached), red, orange, and brown coloration in the form of disseminated and concretionary iron cement. A yellow alteration zone extends up to 20 meters (32 ft) into the underlying Permian Organ Rock Shale and overlying Triassic Moenkopi Formation. Diagenetic coloration is used as a physical proxy for fluid flow that records discrete stages of diagenesis and highlights depositional heterogeneity on multiple scales. Field, petrographic and geochemical analyses indicate that the White Rim Sandstone underwent three diagenetic stages: (1) early oxidation of the reservoir and precipitation of iron, (2) iron mobilization (bleaching) and reprecipitation of pyrite cement by hydrocarbon migration through the reservoir, and (3) oxidation of pyrite to iron oxide minerals. Field and petrographic observations, and quantitative permeability analyses indicate four scales of heterogeneity exist in the White Rim Sandstone in order of decreasing size: (1) depositional unit, (2) bed-set, (3) internal lamination, and (4) depositional grain-texture scales. Reservoir heterogeneity is highly dependent on grain packing. Authigenic cement phases also act as a record of reservoir conditions through diagenesis, providing indirect information on pH, reservoir compaction and fluid interactions. This study has three broad applications to understanding subsurface fluid behavior. (1) The physical diagenetic records provide insight into the history of hydrocarbons in a porous and permeable sandstone, and can be used in petroleum exploration to help determine hydrocarbon migration timing and pathways. (2) The mineralogic and textural characteristics of authigenic cement phases help to assess the complex history of White Rim Sandstone diagenesis through deep time. (3) Secondary iron precipitation highlights large- and small-scale heterogeneity that must be well understood for applications of CO2 sequestration in similar eolian reservoir units.

Subjects/Keywords: Diagenesis; Hydrocarbons; Iron Oxide; Utah

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APA (6^th Edition):

Gorenc, M. A. (2015). Petrophysical and diagenetic characteristics of the permian white rim sandstone, southeast utah. (Masters Thesis). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3996/rec/1844

Chicago Manual of Style (16^th Edition):

Gorenc, Marko Anton. “Petrophysical and diagenetic characteristics of the permian white rim sandstone, southeast utah.” 2015. Masters Thesis, University of Utah. Accessed September 20, 2019. http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3996/rec/1844.

MLA Handbook (7^th Edition):

Gorenc, Marko Anton. “Petrophysical and diagenetic characteristics of the permian white rim sandstone, southeast utah.” 2015. Web. 20 Sep 2019.

Vancouver:

Gorenc MA. Petrophysical and diagenetic characteristics of the permian white rim sandstone, southeast utah. [Internet] [Masters thesis]. University of Utah; 2015. [cited 2019 Sep 20]. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3996/rec/1844.

Council of Science Editors:

Gorenc MA. Petrophysical and diagenetic characteristics of the permian white rim sandstone, southeast utah. [Masters Thesis]. University of Utah; 2015. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3996/rec/1844

4. Ramesh, R. Synthesis and surface coating/functionalization of iron oxide nanoparticles and study of their properties; -.

Degree: Physics, 2012, SRM University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/10474

►

Magnetic iron oxide nanoparticles have drawn tremendous attraction from both fundamental aspect as well as applications in biomedicine such as magnetic bio-separation, detection of biological… (more)

▼

Magnetic iron oxide nanoparticles have drawn tremendous attraction from both fundamental aspect as well as applications in biomedicine such as magnetic bio-separation, detection of biological entities, magnetic resonance imaging, magnetic fluid hyperthermia and targeted drug delivery due to their fascinating magnetic properties. These properties of iron oxide nanoparticles can be tuned by modifying their phase, size, shape and surface coating of the nanoparticles. In the present thesis, synthesis of iron oxide nanoparticles with different morphology and their surface coating/functionalization were carried out. The structural, morphological, vibrational, magnetic and optical properties of these synthesized products were characterized by using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), microRaman spectroscopy, Fourier transform infrared spectroscopy (FTIR), vibrating sample magnetometer (VSM), ultraviolet-visible spectroscopy (UV-Vis) and photoluminescence spectroscopy (PL). In the first part of the thesis deals with synthesis and characterization of iron oxide (hematite and magnetite) nanoparticles with different morphology. Hematite nanorods were synthesized by reverse micelles method using cetyltrimethyl ammonium bromide (CTAB) as a surfactant and calcined at 300 °C. Nanorods have hexagonal crystal structure with diameter of 30-50 nm and length 120-150 nm. A weak ferromagnetic behavior was observed with saturation magnetization (Ms) of 0.6 emu g-1 and coercive force (Hc) of 25 Oe. Ferromagnetic and#945;-Fe2O3 nanoparticles were synthesized by gel evaporation method in air at 300 and#8304;C. The average size of the as synthesized and#945;-Fe2O3 nanoparticle was estimated to be 30 nm and the particles were of good crystalline nature. The ferromagnetic properties of the nanoparticles are due to the existence of and#947;-Fe2O3 phase along with and#945;-Fe2O3.

Bibliography p. 136-160, images,given

Advisors/Committee Members: Muthamizhchelvan, C.

Subjects/Keywords: Physics; iron oxide; nanoparticles

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APA (6^th Edition):

Ramesh, R. (2012). Synthesis and surface coating/functionalization of iron oxide nanoparticles and study of their properties; -. (Thesis). SRM University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/10474

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ramesh, R. “Synthesis and surface coating/functionalization of iron oxide nanoparticles and study of their properties; -.” 2012. Thesis, SRM University. Accessed September 20, 2019. http://shodhganga.inflibnet.ac.in/handle/10603/10474.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ramesh, R. “Synthesis and surface coating/functionalization of iron oxide nanoparticles and study of their properties; -.” 2012. Web. 20 Sep 2019.

Vancouver:

Ramesh R. Synthesis and surface coating/functionalization of iron oxide nanoparticles and study of their properties; -. [Internet] [Thesis]. SRM University; 2012. [cited 2019 Sep 20]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/10474.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ramesh R. Synthesis and surface coating/functionalization of iron oxide nanoparticles and study of their properties; -. [Thesis]. SRM University; 2012. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/10474

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of New South Wales

5. Yue, Jeffrey. Experimental and theoretical study of low-dimensional iron oxide nanoparticles and their nanocomposites.

Degree: Materials Science & Engineering, 2011, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/51857 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:10524/SOURCE02?view=true

► Iron oxyhydroxide and oxide nanoparticles have shown potential capabilities in the field of nanoelectronics, clean energy, and biomedicine. The studies of the physical and chemical… (more)

▼ Iron oxyhydroxide and oxide nanoparticles have shown potential capabilities in the field of nanoelectronics, clean energy, and biomedicine. The studies of the physical and chemical properties of these nanomaterials are important for understanding the formation and growth mechanisms, interface interactions, and surface behaviors control for functional properties and potential applications.Various iron oxyhydroxides/oxides were primarily investigated in this thesis, including Goethite (α-FeOOH) and Akaganéite (β-FeOOH) one-dimensional (1-D) nanostructures with various aspect ratios under ambient conditions. These iron oxyhydroxide materials are thermally and chemically unstable, therefore can easily convert into hematite (α-Fe2O3) and magnetite (Fe3O4) by calcinations and/or chemical reduction, respectively.To further enhance the functional properties and performance, the nanocomposite composed of the core iron oxyhydroxide/oxide particles and polymer or metal coatings were also investigated. The direct deposition of metal nanoparticles (e.g., gold and platinum) was firstly studied. This method will produce stable nanoparticles, which will be useful for chemical adsorption and catalysis. The synthesis of surfactant, polymer, and silica coated nanocomposites was also considered. This procedure is often used in the low temperature applications because the core-shell structure is favorable especially in the areas of drug-deliveries, biological/chemical separations, and sensors.In order to gain a fundamental understanding of the nanoscale system, it is important to use multiscale theoretical methods validated by experimental techniques. Our research method involves the use of various microscopy, diffraction, and spectroscopy techniques to obtain experimental results. The data is further understood through a computational simulation, which allows further insights into fundamental theories of nanoparticle interactions. Advisors/Committee Members: Yu, Aibing, Materials Science & Engineering, Faculty of Science, UNSW, Jiang, Xuchuan, Materials Science & Engineering, Faculty of Science, UNSW.

Subjects/Keywords: Molecular Dynamics; Iron Oxide; Nanoparticles

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APA (6^th Edition):

Yue, J. (2011). Experimental and theoretical study of low-dimensional iron oxide nanoparticles and their nanocomposites. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/51857 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:10524/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Yue, Jeffrey. “Experimental and theoretical study of low-dimensional iron oxide nanoparticles and their nanocomposites.” 2011. Doctoral Dissertation, University of New South Wales. Accessed September 20, 2019. http://handle.unsw.edu.au/1959.4/51857 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:10524/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Yue, Jeffrey. “Experimental and theoretical study of low-dimensional iron oxide nanoparticles and their nanocomposites.” 2011. Web. 20 Sep 2019.

Vancouver:

Yue J. Experimental and theoretical study of low-dimensional iron oxide nanoparticles and their nanocomposites. [Internet] [Doctoral dissertation]. University of New South Wales; 2011. [cited 2019 Sep 20]. Available from: http://handle.unsw.edu.au/1959.4/51857 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:10524/SOURCE02?view=true.

Council of Science Editors:

Yue J. Experimental and theoretical study of low-dimensional iron oxide nanoparticles and their nanocomposites. [Doctoral Dissertation]. University of New South Wales; 2011. Available from: http://handle.unsw.edu.au/1959.4/51857 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:10524/SOURCE02?view=true

University of Manitoba

6. Li, Jie. War against biofilms: magnetic nanoparticles as effective shield breakers.

Degree: Biosystems Engineering, 2018, University of Manitoba

URL: http://hdl.handle.net/1993/33310

► Biofilm formation on medical devices can cause persistent infections. The main feature of biofilms is their self-produced extracellular polymeric substances (EPS) that act as a… (more)

Subjects/Keywords: Biofilm; Iron-oxide magnetic nanoparticles

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APA (6^th Edition):

Li, J. (2018). War against biofilms: magnetic nanoparticles as effective shield breakers. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/33310

Chicago Manual of Style (16^th Edition):

Li, Jie. “War against biofilms: magnetic nanoparticles as effective shield breakers.” 2018. Masters Thesis, University of Manitoba. Accessed September 20, 2019. http://hdl.handle.net/1993/33310.

MLA Handbook (7^th Edition):

Li, Jie. “War against biofilms: magnetic nanoparticles as effective shield breakers.” 2018. Web. 20 Sep 2019.

Vancouver:

Li J. War against biofilms: magnetic nanoparticles as effective shield breakers. [Internet] [Masters thesis]. University of Manitoba; 2018. [cited 2019 Sep 20]. Available from: http://hdl.handle.net/1993/33310.

Council of Science Editors:

Li J. War against biofilms: magnetic nanoparticles as effective shield breakers. [Masters Thesis]. University of Manitoba; 2018. Available from: http://hdl.handle.net/1993/33310

University of New South Wales

7. Shahbazi, Sorour. Synthesis and surface modification of magnetic nanoparticles for potential applications of sarcomas diagnosis and therapy.

Degree: Materials Science & Engineering, 2016, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/55378 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:37413/SOURCE02?view=true

► Nowadays, enormous research efforts focus on the diagnosis and therapy of different types of sarcomas, which are rare but malignant cancers. The application of nano-science… (more)

▼ Nowadays, enormous research efforts focus on the diagnosis and therapy of different types of sarcomas, which are rare but malignant cancers. The application of nano-science in cancer therapy has become one of the most attractive tools in scientific research because of its versatility in diagnosis and treatment. In particular, multifunctional and multimodal magnetic iron oxide nanoparticles can offer solutions in diverse areas of sarcoma, as one of the most desirable noninvasive magnetic resonance imaging (MRI) contrast agents, as well as drug, ligand and gene nanocarrier. It is also an outstanding hyperthermia agent via generating local heat under an alternative magnetic field. Iron oxide nanoparticles are renowned because of their low toxicity and suitability for treatment and diagnosis of different types of cancers; however, in some cases, iron oxide nanoparticles may result in severe damage of DNA, protein, and lipid. To our knowledge research investigating the cytotoxicity effect of iron oxide nanoparticles with different physiochemical characteristics in sarcoma is limited, which presents some major issues that need to be carefully considered. In this study, we initially prepared desirable iron oxide nanoparticles with hydrothermal synthesis and thermal decomposition methods. We modified the aforementioned methods in order to create a desirable range of size of magnetic nanoparticles for bio application (200, 100, 20 and 10 nm). We, also, modified the surface of nanoparticles with different types of coatings (polyethylene glycol (PEG), D-glucose (DG) and silica) under mild conditions to increase their bio-compatibility, bioavailability and colloidal stability. Various methods were used to illustrate and quantify cellular uptake of magnetic nanoparticles in sarcoma cell lines. Finally, the safety of the nanoparticles uptake on diverse human sarcoma cell lines was investigated and found that the readily available iron oxide nanoparticles can be safely taken up by synovial sarcoma and liposarcoma cell lines in the selective histological tumor types; however, they seem highly toxic for fibrous histiocytoma and fibrosarcoma. Advisors/Committee Members: Sean, Li, Materials Science & Engineering, Faculty of Science, UNSW, Jia Lin, Yang, Clinical School - Prince of Wales Hospital, Faculty of Medicine, UNSW.

Subjects/Keywords: Cytotoxicity; Iron oxide nanoparticles; Sarcoma

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APA (6^th Edition):

Shahbazi, S. (2016). Synthesis and surface modification of magnetic nanoparticles for potential applications of sarcomas diagnosis and therapy. (Masters Thesis). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/55378 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:37413/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Shahbazi, Sorour. “Synthesis and surface modification of magnetic nanoparticles for potential applications of sarcomas diagnosis and therapy.” 2016. Masters Thesis, University of New South Wales. Accessed September 20, 2019. http://handle.unsw.edu.au/1959.4/55378 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:37413/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Shahbazi, Sorour. “Synthesis and surface modification of magnetic nanoparticles for potential applications of sarcomas diagnosis and therapy.” 2016. Web. 20 Sep 2019.

Vancouver:

Shahbazi S. Synthesis and surface modification of magnetic nanoparticles for potential applications of sarcomas diagnosis and therapy. [Internet] [Masters thesis]. University of New South Wales; 2016. [cited 2019 Sep 20]. Available from: http://handle.unsw.edu.au/1959.4/55378 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:37413/SOURCE02?view=true.

Council of Science Editors:

Shahbazi S. Synthesis and surface modification of magnetic nanoparticles for potential applications of sarcomas diagnosis and therapy. [Masters Thesis]. University of New South Wales; 2016. Available from: http://handle.unsw.edu.au/1959.4/55378 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:37413/SOURCE02?view=true

Victoria University of Wellington

8. Ferguson, Peter Maurer. Iron Nanoparticles as Magnetic Resonance Imaging Contrast Agents.

Degree: 2011, Victoria University of Wellington

URL: http://hdl.handle.net/10063/4448

► Magnetic nanoparticles are effective in a range of biomedical applications including magneticresonance imaging (MRI) contrast enhancement. The efficacy of nanoparticles ascontrast agents depends mainly on… (more)

▼ Magnetic nanoparticles are effective in a range of biomedical applications including magneticresonance imaging (MRI) contrast enhancement. The efficacy of nanoparticles ascontrast agents depends mainly on the surface chemistry and magnetic properties of theparticles, with a large magnetic moment inducing efficient transverse (T₂) relaxation ofprotons. This results in improved negative enhancement of MRI contrast on T₂ weightedsequences. Iron oxide nanoparticles (FeOx NPs) have been used in MRI for 20 years andare the only commercially available T₂ contrast agents. A significantly larger magneticmoment can potentially be achieved with iron nanoparticles (Fe NPs), but developmenthas been hampered by difficulty in preparing stable particles. In this study, stable Fe NPwere prepared by a novel, simple, synthesis and compared with FeOx NP as T₂ contrastagents in a range of MRI-based biomedical applications.The effectiveness of Fe NPs versus FeOx NPs to negatively enhance MRI contrast onT₂ weighted sequences was first examined in vitro. The Fe NPs and FeOx NPs werecharacterised by electron microscopy and found to be of similar size (16nm). The Fe NPspossessed a core of highly magnetic α-Fe inside a 3nm shell of FeOx of the same crystalstructure as the pure FeOx NPs. Both types of NP were coated with the same molecule,DMSA, to produce aqueous dispersions with similar hydrodynamic particle sizes andpharmacokinetics. When dispersed in gels and examined by MRI, the Fe NPs were foundto produce more than twice the amount of T₂ contrast change per unit concentrationrelative to FeOx NPs. When cells were labelled in vitro, Fe NPs produced greater T₂contrast enhancement in all cell types tested, whilst there was no significant difference in the uptake of iron or the cytotoxicity between cells labelled with Fe or FeOx NPs.To assess the clinical applicability of the nanoparticles in vivo, FeOx NPs and Fe NPswere administered to mice and MRI experiments were performed at 1.5 T. Contrast effectsof the NPs were examined in the liver, spleen and lymph nodes, as tissues in theseorgans are rich in phagocytic cells and have a strong tendency to take up circulatingNPs. In all three organs studied, the Fe NPs produced noticeably darker contrast thanthe FeOx NPs, providing twice the contrast improvement.One of the most intensely researched applications of magnetic nanoparticles in MRI is improving detection of cancer in the lymph nodes. To model the size and NP uptake ofsmall lymph node metastases in humans, a mouse model was developed by injecting 4T1breast cancer cells directly into the mouse spleen. Analysis of mice bearing 4T1 tumoursperformed at 1.5 T showed that Fe NPs produced better contrast than FeOx NPs andimproved the detection of small tumours in the spleen as determined by two blindedradiologists. Indeed, the heightened sensitivity and specificity improved the threshold ofcancer detection on previous studies performed at 1.5 T.It was then examined whether the improved T₂ contrast could enable new MRI applicationsin vivo. A novel… Advisors/Committee Members: Hermans, Ian, Tilley, Richard.

Subjects/Keywords: Iron / iron oxide core / shell nanoparticles; Magnetic resonance imaging; MRI; Iron oxide nanoparticles

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APA (6^th Edition):

Ferguson, P. M. (2011). Iron Nanoparticles as Magnetic Resonance Imaging Contrast Agents. (Doctoral Dissertation). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/4448

Chicago Manual of Style (16^th Edition):

Ferguson, Peter Maurer. “Iron Nanoparticles as Magnetic Resonance Imaging Contrast Agents.” 2011. Doctoral Dissertation, Victoria University of Wellington. Accessed September 20, 2019. http://hdl.handle.net/10063/4448.

MLA Handbook (7^th Edition):

Ferguson, Peter Maurer. “Iron Nanoparticles as Magnetic Resonance Imaging Contrast Agents.” 2011. Web. 20 Sep 2019.

Vancouver:

Ferguson PM. Iron Nanoparticles as Magnetic Resonance Imaging Contrast Agents. [Internet] [Doctoral dissertation]. Victoria University of Wellington; 2011. [cited 2019 Sep 20]. Available from: http://hdl.handle.net/10063/4448.

Council of Science Editors:

Ferguson PM. Iron Nanoparticles as Magnetic Resonance Imaging Contrast Agents. [Doctoral Dissertation]. Victoria University of Wellington; 2011. Available from: http://hdl.handle.net/10063/4448

Virginia Tech

9. Dong, Yujung. Geometric and Electronic Structure Sensitivity of Methyl and Methylene Reactions on Î±-Cr2O3 and Î±-Fe2O3 surfaces.

Degree: PhD, Chemical Engineering, 2012, Virginia Tech

URL: http://hdl.handle.net/10919/39469

► Structural and electronic effects in hydrocarbon reactions over metal oxides have been examined by comparing the reactions of methyl (-CH3) and methylene (=CH2) fragments on… (more)

▼ Structural and electronic effects in hydrocarbon reactions over metal oxides have been examined by comparing the reactions of methyl (-CH3) and methylene (=CH2) fragments on three different oxide single crystal surfaces: Î±-Cr2O3(10-12), Î±-Cr2O3(0001), and Î±-Fe2O3(10-12). The intermediates have been generated through the decomposition of halogenated hydrocarbons. The primary reactions of methyl and methylene over Î±-Cr2O3 are methyl dehydrogenation to methylene, and methylene coupling (C-C bond formation) to ethylene (CH2=CH2). The different surface geometric structures of Î±-Cr2O3(10-12) and (0001) lead to an increase in the activation barrier for methylene surface migration, a critical step in the coupling reaction, of 5.9 kcal/mol over the (0001) surface. For methyl dehydrogenation, differences in the local site pair (cation/anion) geometry and the proximity of surface lattice oxygen to the methyl group do not result in a significant difference in the barrier for dehydrogenation, suggesting that the surface anions play a minor role in the dehydrogenation of methyl on these surfaces. Electronic differences in the Fe3+ (d5) and Cr3+ (d3) cations on structurally-similar Î±-Cr2O3(10-12) and Î±-Fe2O3(10-12) surfaces lead to major differences in reaction selectivity. Î±-Cr2O3(10-12) is nonreducible under the reaction conditions of this study, but Î±-Fe2O3(10-12) is highly reducible due to the difference in the d electron configuration. Hydrocarbons are formed over Î±-Cr2O3(10-12), but nonselective oxidation products (CO2, CO, H2O) are formed over the stoichiometric Î±-Fe2O3(10-12) surface along with surface reduction. Reduction of the Î±-Fe2O3(10-12) leads to a shift in the product selectivity towards formaldehyde (CH2O) and ethylene. For the limited number of systems examined in this study, examples of geometric structure sensitive (methylene coupling) and structure insensitive (methyl dehydrogenation) reactions have been found on Î±-Cr2O3, and electronic effects are observed for the reactions on Î±-Cr2O3(10-12) and Î±-Fe2O3(10-12). For the structure sensitive reaction, the differences in surface geometry impact the reactions kinetics over Cr2O3 but not the types of products formed, while the electronic differences give rise to dramatic changes in the selectivity associated with the very different products formed over Î±-Cr2O3(10-12) and Î±-Fe2O3(10-12). Advisors/Committee Members: Cox, David F. (committeechair), Oyama, Shigeo Ted (committee member), Davis, Richey M. (committee member), Morris, John R. (committee member).

Subjects/Keywords: iron oxide; metal oxide surface; methyl; methylene; chromium oxide

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APA (6^th Edition):

Dong, Y. (2012). Geometric and Electronic Structure Sensitivity of Methyl and Methylene Reactions on Î±-Cr2O3 and Î±-Fe2O3 surfaces. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/39469

Chicago Manual of Style (16^th Edition):

Dong, Yujung. “Geometric and Electronic Structure Sensitivity of Methyl and Methylene Reactions on Î±-Cr2O3 and Î±-Fe2O3 surfaces.” 2012. Doctoral Dissertation, Virginia Tech. Accessed September 20, 2019. http://hdl.handle.net/10919/39469.

MLA Handbook (7^th Edition):

Dong, Yujung. “Geometric and Electronic Structure Sensitivity of Methyl and Methylene Reactions on Î±-Cr2O3 and Î±-Fe2O3 surfaces.” 2012. Web. 20 Sep 2019.

Vancouver:

Dong Y. Geometric and Electronic Structure Sensitivity of Methyl and Methylene Reactions on Î±-Cr2O3 and Î±-Fe2O3 surfaces. [Internet] [Doctoral dissertation]. Virginia Tech; 2012. [cited 2019 Sep 20]. Available from: http://hdl.handle.net/10919/39469.

Council of Science Editors:

Dong Y. Geometric and Electronic Structure Sensitivity of Methyl and Methylene Reactions on Î±-Cr2O3 and Î±-Fe2O3 surfaces. [Doctoral Dissertation]. Virginia Tech; 2012. Available from: http://hdl.handle.net/10919/39469

Texas A&M University

10. Hass, Amir. The role of iron oxyhydroxides in phosphorus chemistry of some East Texas forest soils.

Degree: 2006, Texas A&M University

URL: http://hdl.handle.net/1969.1/4346

► Forest soil phosphorus (P) chemical behavior was evaluated in some mid-rotation fertilized loblolly pine (Pinus taeda L.) plantations in East Texas, that differed in their… (more)

▼ Forest soil phosphorus (P) chemical behavior was evaluated in some mid-rotation fertilized loblolly pine (Pinus taeda L.) plantations in East Texas, that differed in their site drainage characteristics. Forest floor mass and carbon content in the forest floor were determined. Total P (PT) in the forest floor, and total and Mehlich-1 P and citratedithionite (CD) and acid ammonium-oxalate (AAO) extractable P, Al, Fe, and Mn within the mineral soil upper 100 cm were determined. Colorimetric determination of AAOand CD-extractable P by the molybdenum blue ascorbic acid method, without the use of pre-digestion, was assessed by an automated continuous flow injection system. Phosphorus distribution between different operationally defined solid phases and its relationships with CD and AAO extractable Mn, Al, Fe among depth, site, drainage class and treatment were evaluated. Soil P forms were highly correlated with iron oxides across sites, drainage classes, treatments, and depth intervals with significant differences in P content and distribution in the soil profile and solid phases among drainage classes. Soil P distribution patterns differed among drainage classes, yet it followed the distribution of the iron oxides. Iron oxide??????s role as a sink for soil P was higher in the well-drained compared to the poorly drained sites. Amorphous phases of iron oxides were higher in the poorly drained sites and dominated the role of iron oxides as a sink for P under the poor drainage conditions. Fertilization resulted in significantly higher forest floor mass, P content in the forest floor, and total P (PT) and CD-extractable P (Pd) in the soils?????? upper 10 cm. The treatment effect on P in the forest floor, and on PT and Pd in the upper 10 cm of the mineral soil was equivalent to 6, 19, and 11% of the applied P, respectively. AAO-extractable P was highly correlated with Mehlich-1 P in the fertilized plots. Treatment and site drainage class effects on P accumulation in the different solid phases in the mineral soil and in the forest floor and the potential contribution of these pools to P availability in subsequent rotations, following clearcutting, are discussed. Advisors/Committee Members: Messina, Michael G (advisor), Fisher, Richard F (committee member), Hons, Frank M (committee member), Loeppert, Richard H Jr. (committee member), Smith, Charles T Jr. (committee member).

Subjects/Keywords: phosphorus; iron oxide

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APA (6^th Edition):

Hass, A. (2006). The role of iron oxyhydroxides in phosphorus chemistry of some East Texas forest soils. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/4346

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hass, Amir. “The role of iron oxyhydroxides in phosphorus chemistry of some East Texas forest soils.” 2006. Thesis, Texas A&M University. Accessed September 20, 2019. http://hdl.handle.net/1969.1/4346.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hass, Amir. “The role of iron oxyhydroxides in phosphorus chemistry of some East Texas forest soils.” 2006. Web. 20 Sep 2019.

Vancouver:

Hass A. The role of iron oxyhydroxides in phosphorus chemistry of some East Texas forest soils. [Internet] [Thesis]. Texas A&M University; 2006. [cited 2019 Sep 20]. Available from: http://hdl.handle.net/1969.1/4346.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hass A. The role of iron oxyhydroxides in phosphorus chemistry of some East Texas forest soils. [Thesis]. Texas A&M University; 2006. Available from: http://hdl.handle.net/1969.1/4346

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

11. Lin, Tzu-Hsiang. Selective enrichment of catecholamines using iron oxide nanoparticles followed by CE with UV detection.

Degree: Master, Chemistry, 2012, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730112-155907

► This study examines the use of unmodified magnetite nanoparticles (Fe3O4 NPs) for selective extraction and enrichment of the catecholamines dopamine (DA), noradrenaline (NE), and adrenaline… (more)

Subjects/Keywords: extraction; iron oxide nanoparticles; catecholamine; dopamine; CE

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APA (6^th Edition):

Lin, T. (2012). Selective enrichment of catecholamines using iron oxide nanoparticles followed by CE with UV detection. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730112-155907

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lin, Tzu-Hsiang. “Selective enrichment of catecholamines using iron oxide nanoparticles followed by CE with UV detection.” 2012. Thesis, NSYSU. Accessed September 20, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730112-155907.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lin, Tzu-Hsiang. “Selective enrichment of catecholamines using iron oxide nanoparticles followed by CE with UV detection.” 2012. Web. 20 Sep 2019.

Vancouver:

Lin T. Selective enrichment of catecholamines using iron oxide nanoparticles followed by CE with UV detection. [Internet] [Thesis]. NSYSU; 2012. [cited 2019 Sep 20]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730112-155907.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lin T. Selective enrichment of catecholamines using iron oxide nanoparticles followed by CE with UV detection. [Thesis]. NSYSU; 2012. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730112-155907

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Cape Peninsula University of Technology

12. Chowdhury, Faysol. The effect of temperature on the kinetics of microbial ferrous-iron oxidation in a packed column bioreactor .

Degree: 2012, Cape Peninsula University of Technology

URL: http://etd.cput.ac.za/handle/20.500.11838/889

► The microbial ferrous-iron oxidation process plays a significant role in bioleaching, providing ferric-iron (Fe3+) − a strong oxidising agent for the dissolution of most sulphide… (more)

Subjects/Keywords: Oxidation; Ferrous oxide; Iron oxides; Bioreactors

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APA (6^th Edition):

Chowdhury, F. (2012). The effect of temperature on the kinetics of microbial ferrous-iron oxidation in a packed column bioreactor . (Thesis). Cape Peninsula University of Technology. Retrieved from http://etd.cput.ac.za/handle/20.500.11838/889

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chowdhury, Faysol. “The effect of temperature on the kinetics of microbial ferrous-iron oxidation in a packed column bioreactor .” 2012. Thesis, Cape Peninsula University of Technology. Accessed September 20, 2019. http://etd.cput.ac.za/handle/20.500.11838/889.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chowdhury, Faysol. “The effect of temperature on the kinetics of microbial ferrous-iron oxidation in a packed column bioreactor .” 2012. Web. 20 Sep 2019.

Vancouver:

Chowdhury F. The effect of temperature on the kinetics of microbial ferrous-iron oxidation in a packed column bioreactor . [Internet] [Thesis]. Cape Peninsula University of Technology; 2012. [cited 2019 Sep 20]. Available from: http://etd.cput.ac.za/handle/20.500.11838/889.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chowdhury F. The effect of temperature on the kinetics of microbial ferrous-iron oxidation in a packed column bioreactor . [Thesis]. Cape Peninsula University of Technology; 2012. Available from: http://etd.cput.ac.za/handle/20.500.11838/889

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Louisiana State University

13. Ren, Binbin. Nitric oxide cytotoxicity and functions of iron-sulfur enzymes in Escherichia coli.

Degree: PhD, 2009, Louisiana State University

URL: etd-07072009-151947 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3786

► Iron-sulfur proteins are ubiquitous in biological processes. Here we report that NO, a physiological free radical, can effectively inhibit cell growth of Escherichia coli in… (more)

▼ Iron-sulfur proteins are ubiquitous in biological processes. Here we report that NO, a physiological free radical, can effectively inhibit cell growth of Escherichia coli in minimal medium under anaerobic growth conditions. Fractionation of the cell extracts obtained from NO-exposed cells shows a broad distribution of the protein-bound dinitrosyl-iron complexes (DNICs) formed by NO. On the other hand, the cell growth of E. coli can be restored when NO-exposed cells are either supplemented with the branched-chain amino acids (BCAAs) anaerobically or returned to aerobic growth conditions. It turns out that dihydroxyacid dehydratase (IlvD), an iron-sulfur enzyme essential for the BCAAs biosynthesis, is completely inactivated by NO along with formation of the IlvD-bound DNICs. Nevertheless, the IlvD-DNICs, together with other protein-bound DNICs, are sufficiently repaired under aerobic growth conditions without new proteins synthesis. It is proposed that cellular deficiency to repair the NO-modified iron-sulfur proteins may directly contribute to the NO-induced bacteriostasis under anaerobic conditions. We further identify a new iron-sulfur enzyme as a potential target of NO, a DNA damage-inducible helicase DinG, which is a member of the DNA helicase superfamily II involved in DNA replication and repair. We find that E. coli DinG contains a redox-active [4Fe-4S] cluster with a midpoint redox potential (Em) of -390 ± 23 mV (pH 8.0). An oxidized [4Fe-4S] cluster in DinG is required for its helicase activity and reduction of the [4Fe-4S] cluster can reversibly switch off its helicase activity. While DinG is resistant to 100-fold excess of hydrogen peroxide, it can be readily inactivated by NO, implying that inactivation of DinG by NO could impact the DNA repair and result in genomic instability. The NO-modified DinG can be fully reactivated by reassembly of a new [4Fe-4S] cluster, indicating that DinG is the primary target of NO exposure. The results from this study suggest that NO can effectively modify the iron-sulfur cluster in proteins, thus contributing to the NO-mediated bacteriostasis and genomic instability.

Subjects/Keywords: Nitric Oxide; Iron-Sulfur Enzymes; Escherichia coli

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APA (6^th Edition):

Ren, B. (2009). Nitric oxide cytotoxicity and functions of iron-sulfur enzymes in Escherichia coli. (Doctoral Dissertation). Louisiana State University. Retrieved from etd-07072009-151947 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3786

Chicago Manual of Style (16^th Edition):

Ren, Binbin. “Nitric oxide cytotoxicity and functions of iron-sulfur enzymes in Escherichia coli.” 2009. Doctoral Dissertation, Louisiana State University. Accessed September 20, 2019. etd-07072009-151947 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3786.

MLA Handbook (7^th Edition):

Ren, Binbin. “Nitric oxide cytotoxicity and functions of iron-sulfur enzymes in Escherichia coli.” 2009. Web. 20 Sep 2019.

Vancouver:

Ren B. Nitric oxide cytotoxicity and functions of iron-sulfur enzymes in Escherichia coli. [Internet] [Doctoral dissertation]. Louisiana State University; 2009. [cited 2019 Sep 20]. Available from: etd-07072009-151947 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3786.

Council of Science Editors:

Ren B. Nitric oxide cytotoxicity and functions of iron-sulfur enzymes in Escherichia coli. [Doctoral Dissertation]. Louisiana State University; 2009. Available from: etd-07072009-151947 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3786

McMaster University

14. Kunyu, Liang. SYNTHESIS AND CHARACTERIZATION OF IRON OXIDE NANOPARTICLES FOR INCORPORATION INTO ORGANIC ELECTRONIC DEVICES.

Degree: MASc, 2018, McMaster University

URL: http://hdl.handle.net/11375/22833

►

Surface modification of electrodes becomes a powerful process to improve the performance of organic electronic devices such as organic light emitting diodes (OLEDs) and organic… (more)

▼

Surface modification of electrodes becomes a powerful process to improve the performance of organic electronic devices such as organic light emitting diodes (OLEDs) and organic photovoltaic cells (OPVs), boosting their further commercialization. Effective improvement can be achieved by introducing several types of nanoparticles onto the electrodes. Magnetic fields also have influence in the organic electronics, due to charge transport mechanisms of organic semiconducting materials. Therefore, magnetic nanoparticles are of particular interest. Magnetic γ-Fe2O3 nanoparticles have been produced using diblock copolymer reverse micelles method. The processes were elucidated in detail by Raman spectroscopy to reveal the iron oxide evolution. Compositional and structural information of individual γ-Fe2O3 nanoparticles were also characterized thoroughly by transmission electron microscopy (TEM) equipped with energy-dispersive X-ray spectroscopy (EDX) and electron energy loss spectroscopy (EELS), while their magnetic properties of the nanoparticles arrays were also evaluated by superconducting quantum interference device (SQUID) magnetometer. The low temperature annealing process was developed to facilitate the incorporation of γ-Fe2O3 nanoparticles in practical devices. Introducing γ-Fe2O3 nanoparticles onto the anode of basic OPV devices showed a positive effect on performance during the preliminary test. By using several methods, dispersion of γ-Fe2O3 nanoparticles can be tuned, examined by disLocate which is a comprehensive suite of tools for quantitative dispersion analysis. Additionally, the size of the nanoparticles can be changed simply by changing the loading ratio of FeCl3 below the maximum loading which was determined by quantum mechanical mapping using atomic force microscopy (AFM-QNM). With high control in terms of size and dispersion, the magnetic γ-Fe2O3 nanoparticles are ready to be employed to study the surface modification and magnetic effect on organic electronic devices.

Thesis

Master of Applied Science (MASc)

Advisors/Committee Members: Ayse, Turak, Engineering Physics.

Subjects/Keywords: iron oxide; nanoparticles; structure; Raman; dispersion; magnetic

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APA (6^th Edition):

Kunyu, L. (2018). SYNTHESIS AND CHARACTERIZATION OF IRON OXIDE NANOPARTICLES FOR INCORPORATION INTO ORGANIC ELECTRONIC DEVICES. (Masters Thesis). McMaster University. Retrieved from http://hdl.handle.net/11375/22833

Chicago Manual of Style (16^th Edition):

Kunyu, Liang. “SYNTHESIS AND CHARACTERIZATION OF IRON OXIDE NANOPARTICLES FOR INCORPORATION INTO ORGANIC ELECTRONIC DEVICES.” 2018. Masters Thesis, McMaster University. Accessed September 20, 2019. http://hdl.handle.net/11375/22833.

MLA Handbook (7^th Edition):

Kunyu, Liang. “SYNTHESIS AND CHARACTERIZATION OF IRON OXIDE NANOPARTICLES FOR INCORPORATION INTO ORGANIC ELECTRONIC DEVICES.” 2018. Web. 20 Sep 2019.

Vancouver:

Kunyu L. SYNTHESIS AND CHARACTERIZATION OF IRON OXIDE NANOPARTICLES FOR INCORPORATION INTO ORGANIC ELECTRONIC DEVICES. [Internet] [Masters thesis]. McMaster University; 2018. [cited 2019 Sep 20]. Available from: http://hdl.handle.net/11375/22833.

Council of Science Editors:

Kunyu L. SYNTHESIS AND CHARACTERIZATION OF IRON OXIDE NANOPARTICLES FOR INCORPORATION INTO ORGANIC ELECTRONIC DEVICES. [Masters Thesis]. McMaster University; 2018. Available from: http://hdl.handle.net/11375/22833

University of the Western Cape

15. Allard, Garvin Richard Johan. Synthesis and characterization of zinc-doped magnetic nanoparticles for diagnostic studies .

Degree: 2015, University of the Western Cape

URL: http://hdl.handle.net/11394/4815

► In the present study we report the synthesis and characterization of iron oxide magnetic nanoparticles doped with zinc in an attempt to enhance the magnetic… (more)

Subjects/Keywords: Nanoparticles; Iron Oxide; Breast cancer; Doping

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APA (6^th Edition):

Allard, G. R. J. (2015). Synthesis and characterization of zinc-doped magnetic nanoparticles for diagnostic studies . (Thesis). University of the Western Cape. Retrieved from http://hdl.handle.net/11394/4815

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Allard, Garvin Richard Johan. “Synthesis and characterization of zinc-doped magnetic nanoparticles for diagnostic studies .” 2015. Thesis, University of the Western Cape. Accessed September 20, 2019. http://hdl.handle.net/11394/4815.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Allard, Garvin Richard Johan. “Synthesis and characterization of zinc-doped magnetic nanoparticles for diagnostic studies .” 2015. Web. 20 Sep 2019.

Vancouver:

Allard GRJ. Synthesis and characterization of zinc-doped magnetic nanoparticles for diagnostic studies . [Internet] [Thesis]. University of the Western Cape; 2015. [cited 2019 Sep 20]. Available from: http://hdl.handle.net/11394/4815.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Allard GRJ. Synthesis and characterization of zinc-doped magnetic nanoparticles for diagnostic studies . [Thesis]. University of the Western Cape; 2015. Available from: http://hdl.handle.net/11394/4815

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Loughborough University

16. Pascoe, Jonathan Neil. A study of scale-up methodologies for the filter cycle.

Degree: PhD, 2000, Loughborough University

URL: https://dspace.lboro.ac.uk/2134/36023 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247953

► This project was a joint venture between Loughborough University, the academic investigator, and ICI, the industrial sponsor. The aim was to develop and validate filter… (more)

Subjects/Keywords: 660; Iron oxide

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APA (6^th Edition):

Pascoe, J. N. (2000). A study of scale-up methodologies for the filter cycle. (Doctoral Dissertation). Loughborough University. Retrieved from https://dspace.lboro.ac.uk/2134/36023 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247953

Chicago Manual of Style (16^th Edition):

Pascoe, Jonathan Neil. “A study of scale-up methodologies for the filter cycle.” 2000. Doctoral Dissertation, Loughborough University. Accessed September 20, 2019. https://dspace.lboro.ac.uk/2134/36023 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247953.

MLA Handbook (7^th Edition):

Pascoe, Jonathan Neil. “A study of scale-up methodologies for the filter cycle.” 2000. Web. 20 Sep 2019.

Vancouver:

Pascoe JN. A study of scale-up methodologies for the filter cycle. [Internet] [Doctoral dissertation]. Loughborough University; 2000. [cited 2019 Sep 20]. Available from: https://dspace.lboro.ac.uk/2134/36023 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247953.

Council of Science Editors:

Pascoe JN. A study of scale-up methodologies for the filter cycle. [Doctoral Dissertation]. Loughborough University; 2000. Available from: https://dspace.lboro.ac.uk/2134/36023 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247953

University of Minnesota

17. Levar, Caleb. Redox potential dependent respiration by Geobacter sulfurreducens.

Degree: PhD, Microbiology, Immunology and Cancer Biology, 2015, University of Minnesota

URL: http://hdl.handle.net/11299/192663

► Geobacter sulfurreducens is a Gram negative δ-proteobacteria with the ability to couple the internal oxidation of a carbon and electron donor with the external reduction… (more)

Subjects/Keywords: electron transfer; Geobacter; iron oxide; redox potential

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APA (6^th Edition):

Levar, C. (2015). Redox potential dependent respiration by Geobacter sulfurreducens. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/192663

Chicago Manual of Style (16^th Edition):

Levar, Caleb. “Redox potential dependent respiration by Geobacter sulfurreducens.” 2015. Doctoral Dissertation, University of Minnesota. Accessed September 20, 2019. http://hdl.handle.net/11299/192663.

MLA Handbook (7^th Edition):

Levar, Caleb. “Redox potential dependent respiration by Geobacter sulfurreducens.” 2015. Web. 20 Sep 2019.

Vancouver:

Levar C. Redox potential dependent respiration by Geobacter sulfurreducens. [Internet] [Doctoral dissertation]. University of Minnesota; 2015. [cited 2019 Sep 20]. Available from: http://hdl.handle.net/11299/192663.

Council of Science Editors:

Levar C. Redox potential dependent respiration by Geobacter sulfurreducens. [Doctoral Dissertation]. University of Minnesota; 2015. Available from: http://hdl.handle.net/11299/192663

University of Minnesota

18. Smolensky, Eric Dominick. Responsive, multimodal imaging agents for MRI: advancing the detection of metals and oxidized species implicated in neurodegenerative disorders.

Degree: PhD, Chemistry, 2012, University of Minnesota

URL: http://hdl.handle.net/11299/167618

► The successful development of responsive, multimodal imaging agents required a bottom-up approach starting with the nature of the iron oxide nanoparticles. Thee relaxivity of the… (more)

Subjects/Keywords: Inorganic; Iron oxide; MRI; Nanoparticles; Relaxivity; Chemistry

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Smolensky, E. D. (2012). Responsive, multimodal imaging agents for MRI: advancing the detection of metals and oxidized species implicated in neurodegenerative disorders. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/167618

Chicago Manual of Style (16^th Edition):

Smolensky, Eric Dominick. “Responsive, multimodal imaging agents for MRI: advancing the detection of metals and oxidized species implicated in neurodegenerative disorders.” 2012. Doctoral Dissertation, University of Minnesota. Accessed September 20, 2019. http://hdl.handle.net/11299/167618.

MLA Handbook (7^th Edition):

Smolensky, Eric Dominick. “Responsive, multimodal imaging agents for MRI: advancing the detection of metals and oxidized species implicated in neurodegenerative disorders.” 2012. Web. 20 Sep 2019.

Vancouver:

Smolensky ED. Responsive, multimodal imaging agents for MRI: advancing the detection of metals and oxidized species implicated in neurodegenerative disorders. [Internet] [Doctoral dissertation]. University of Minnesota; 2012. [cited 2019 Sep 20]. Available from: http://hdl.handle.net/11299/167618.

Council of Science Editors:

Smolensky ED. Responsive, multimodal imaging agents for MRI: advancing the detection of metals and oxidized species implicated in neurodegenerative disorders. [Doctoral Dissertation]. University of Minnesota; 2012. Available from: http://hdl.handle.net/11299/167618

Victoria University of Wellington

19. Parker, Amanda Jeanne. Kinetic Monte Carlo Modelling of Dissolution and Passive Film Formation in Fe-Cr Alloys.

Degree: 2011, Victoria University of Wellington

URL: http://hdl.handle.net/10063/2256

► Stainless steels differ from iron in that chromium content allows for the formation of a passive iron-chromium oxide film which is only nanometres in thickness,… (more)

Subjects/Keywords: Electrochemistry; Chromium-iron alloys; Oxide coating

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APA (6^th Edition):

Parker, A. J. (2011). Kinetic Monte Carlo Modelling of Dissolution and Passive Film Formation in Fe-Cr Alloys. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/2256

Chicago Manual of Style (16^th Edition):

Parker, Amanda Jeanne. “Kinetic Monte Carlo Modelling of Dissolution and Passive Film Formation in Fe-Cr Alloys.” 2011. Masters Thesis, Victoria University of Wellington. Accessed September 20, 2019. http://hdl.handle.net/10063/2256.

MLA Handbook (7^th Edition):

Parker, Amanda Jeanne. “Kinetic Monte Carlo Modelling of Dissolution and Passive Film Formation in Fe-Cr Alloys.” 2011. Web. 20 Sep 2019.

Vancouver:

Parker AJ. Kinetic Monte Carlo Modelling of Dissolution and Passive Film Formation in Fe-Cr Alloys. [Internet] [Masters thesis]. Victoria University of Wellington; 2011. [cited 2019 Sep 20]. Available from: http://hdl.handle.net/10063/2256.

Council of Science Editors:

Parker AJ. Kinetic Monte Carlo Modelling of Dissolution and Passive Film Formation in Fe-Cr Alloys. [Masters Thesis]. Victoria University of Wellington; 2011. Available from: http://hdl.handle.net/10063/2256

University of Arizona

20. Smith, Steven P. Lanthanide-containing Nanostructured Materials .

Degree: 2011, University of Arizona

URL: http://hdl.handle.net/10150/145459

► The research described in this Dissertation is concerned generally with the exploration of the potential use of lanthanide elements in nanostructured materials for the purpose… (more)

▼ The research described in this Dissertation is concerned generally with the exploration of the potential use of lanthanide elements in nanostructured materials for the purpose of modification of the magnetic and optical properties. This is explored through a focus on the development of lanthanide-containing iron oxide nanosystems. Our objectives of producing lanthanide containing nanostructured materials with potentially useful optical and magnetic applications has been achieved through the development of lanthanide-doped Fe3O4 and -Fe2O3 nanoparticles, as well as a unique core-shell magnetic-upconverting nanoparticle system.Necessary background information on nanomaterials, rationale for the study of lanthanide-containing iron oxide nanosystems and context for discussion of the results obtained in each project is provided in the Introduction Chapter. The syntheses of Fe3O4 nanoparticles doped with Eu(III) and Sm(III) are discussed, along with structural characterization and magnetic property investigation of products In Chapter 2. The following Chapter expands the study of lanthanide doping to -Fe2O3, a closely related yet distinct magnetic nanoparticle system. A completely different synthesis is attempted, and comparisons between the two systems are made.The development of novel synthetic methodologies used to create such products has yielded high-quality lanthanide-containing materials and are evidenced by TEM images displaying nearly monodisperse particles in each of our efforts. The modifications to the magnetic properties resulting from lanthanide doping include theobservation of ferromagnetism in the Fe3O4 system and increased magnetic saturation of -Fe2O3 nanoparticles, and are characterized by VSM and the visual observation of magnetic alignment of products. Our efforts towards developing a novel methodology capable of producing high quality Fe3O4 nanoparticles, and subsequent characterization of products, were published in the Journal of the American Chemical Society.Optically active, magnetic, core-shell nanoparticles are investigated in Chapter 4 for the potential uses in diagnosis and treatment of cancer. This multifunctional system uses Fe3O4 as a magnetic core, shelled by upconverting lanthanide-containing nanomaterials, and is rendered biocompatible through encapsulation of the core-shell structure by a silica shell. Added functionality is achieved through amine functionalization of the silica surface, with the goal of coupling the inorganic nanoparticle with drug targeting groups. TEM results indicate successful formation of the core-shell nanoparticles, and expected magnetic and optical properties are shown by visual observation and luminescence spectroscopy, respectively. Advisors/Committee Members: Zheng, Zhiping (advisor), Lichtenberger, Dennis (committeemember), Miranda, Katrina (committeemember), Saavedra, S. Scott (committeemember), Armstrong, Neal R. (committeemember).

Subjects/Keywords: biomedical; doping; Iron oxide; Lanthanide; magnetic; Nano

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APA (6^th Edition):

Smith, S. P. (2011). Lanthanide-containing Nanostructured Materials . (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/145459

Chicago Manual of Style (16^th Edition):

Smith, Steven P. “Lanthanide-containing Nanostructured Materials .” 2011. Doctoral Dissertation, University of Arizona. Accessed September 20, 2019. http://hdl.handle.net/10150/145459.

MLA Handbook (7^th Edition):

Smith, Steven P. “Lanthanide-containing Nanostructured Materials .” 2011. Web. 20 Sep 2019.

Vancouver:

Smith SP. Lanthanide-containing Nanostructured Materials . [Internet] [Doctoral dissertation]. University of Arizona; 2011. [cited 2019 Sep 20]. Available from: http://hdl.handle.net/10150/145459.

Council of Science Editors:

Smith SP. Lanthanide-containing Nanostructured Materials . [Doctoral Dissertation]. University of Arizona; 2011. Available from: http://hdl.handle.net/10150/145459

University of Texas – Austin

21. Willsey, Brian William. Reaction controlled kinetic assembly of small gold nanoclusters with high NIR extinction.

Degree: MSin Engineering, General Materials Science and Engineering, 2011, University of Texas – Austin

URL: http://hdl.handle.net/2152/44521

► Nanoclusters with sizes of ~50nm with high NIR extinction at wavelengths beyond 800 nm are of interest in various fields including biomedical optical imaging, microelectronics,… (more)

Subjects/Keywords: Gold; Nanoclusters; Nanoparticles; Colloid; Iron oxide

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APA (6^th Edition):

Willsey, B. W. (2011). Reaction controlled kinetic assembly of small gold nanoclusters with high NIR extinction. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/44521

Chicago Manual of Style (16^th Edition):

Willsey, Brian William. “Reaction controlled kinetic assembly of small gold nanoclusters with high NIR extinction.” 2011. Masters Thesis, University of Texas – Austin. Accessed September 20, 2019. http://hdl.handle.net/2152/44521.

MLA Handbook (7^th Edition):

Willsey, Brian William. “Reaction controlled kinetic assembly of small gold nanoclusters with high NIR extinction.” 2011. Web. 20 Sep 2019.

Vancouver:

Willsey BW. Reaction controlled kinetic assembly of small gold nanoclusters with high NIR extinction. [Internet] [Masters thesis]. University of Texas – Austin; 2011. [cited 2019 Sep 20]. Available from: http://hdl.handle.net/2152/44521.

Council of Science Editors:

Willsey BW. Reaction controlled kinetic assembly of small gold nanoclusters with high NIR extinction. [Masters Thesis]. University of Texas – Austin; 2011. Available from: http://hdl.handle.net/2152/44521

NSYSU

22. Yen , Chen-wei. Anomalous Enhancement on Magnetic Ordering by Divalent Ions Doping of (Bi0.9M0.1)FeO3 (M=Pb, Ca).

Degree: Master, Physics, 2014, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0812114-105926

► In this study, we used neutron scattering to understand the evolution of crystal and magnetic phases of Pb or Ca doped bismuth iron oxide. This… (more)

Subjects/Keywords: Bismuth lead iron oxide; Hexagonal; Cubic; Neel temperature; Bismuth calcium iron oxide; Goodenough-Kanamori-Anderson

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APA (6^th Edition):

Yen , C. (2014). Anomalous Enhancement on Magnetic Ordering by Divalent Ions Doping of (Bi0.9M0.1)FeO3 (M=Pb, Ca). (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0812114-105926

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Yen , Chen-wei. “Anomalous Enhancement on Magnetic Ordering by Divalent Ions Doping of (Bi0.9M0.1)FeO3 (M=Pb, Ca).” 2014. Thesis, NSYSU. Accessed September 20, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0812114-105926.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Yen , Chen-wei. “Anomalous Enhancement on Magnetic Ordering by Divalent Ions Doping of (Bi0.9M0.1)FeO3 (M=Pb, Ca).” 2014. Web. 20 Sep 2019.

Vancouver:

Yen C. Anomalous Enhancement on Magnetic Ordering by Divalent Ions Doping of (Bi0.9M0.1)FeO3 (M=Pb, Ca). [Internet] [Thesis]. NSYSU; 2014. [cited 2019 Sep 20]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0812114-105926.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Yen C. Anomalous Enhancement on Magnetic Ordering by Divalent Ions Doping of (Bi0.9M0.1)FeO3 (M=Pb, Ca). [Thesis]. NSYSU; 2014. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0812114-105926

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Otago

23. Ariffin, Mimi. Crosstalk Between Iron Homeostasis And Nitric Oxide Signalling: Impact On Cancer Cell Viability .

Degree: 2012, University of Otago

URL: http://hdl.handle.net/10523/2282

► The element iron (Fe) is essential for mammals since many enzymes require Fe as a cofactor for metabolic processes. Fe regulation is extremely important to… (more)

▼ The element iron (Fe) is essential for mammals since many enzymes require Fe as a cofactor for metabolic processes. Fe regulation is extremely important to maintain Fe homeostasis as Fe overload and Fe deprivation are cytotoxic. Fe overload can cause oxidative damage via excessive production of reactive oxygen species (ROS). On the other hand, Fe deprivation can inhibit cellular growth and lead to apoptosis. Iron regulatory proteins (IRPs) are important for maintaining cellular Fe homeostasis. Regulation of these proteins involves the redox status of the iron-sulphur (Fe-S) clusters of the enzyme aconitase. IRPs are very sensitive to oxidative stress. Excessive exposure of these regulatory proteins to ROS will disrupt cellular Fe regulation by inducing Fe trafficking in cells. The major cellular systems (e.g. mitochondrial respiratory chain) are dependent on Fe for their functionality. With a lack of Fe, these systems will be affected. The susceptibility of cells to oxidative damage will increase under Fe deprivation conditions. Therefore, potentially both Fe overload and Fe deprivation are beneficial for cancer therapy if they could be selectively induced within a tumour. In the present study, nitric oxide (•NO) released by a novel photoactive agent, tDSNO, was studied as a means of selectively impairing Fe homeostasis and exacerbating the effect of Fe deprivation. The exposure to •NO was hypothesised to cause toxicity to cancer cells by exaggerating the stress conditions, which is the characteristic of both Fe overload and Fe deprivation pathways. Results showed that the exposure of breast cancer cells (MDA-MB-231) and lung cancer cells (A549) to •NO under normal Fe homeostasis conditions was unable to promote Fe overload as the intracellular Fe content did not significantly increase relative to control (p>0.05). However, the efficacy of tDSNO was potentiated under conditions of Fe deprivation. A maximum cellular death of 59.1 ± 1.2% was observed after 24 h of exposure to 40 µM of tDSNO at 37 °C (p<0.05), while under these conditions, the drug tDSNO displayed a low toxicity in cells with normal Fe homeostasis. Therefore, the toxic effect of tDSNO in cancer cells was substantially enhanced under Fe deprivation conditions. It was then concluded that this novel drug could be more effective if used in combination with Fe chelation therapy. Advisors/Committee Members: Giles, Gregory (advisor).

Subjects/Keywords: Nitric oxide; Iron homeostasis; Nitric oxide donors; Iron chelators; Breast cancer; Lung cancer

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APA (6^th Edition):

Ariffin, M. (2012). Crosstalk Between Iron Homeostasis And Nitric Oxide Signalling: Impact On Cancer Cell Viability . (Masters Thesis). University of Otago. Retrieved from http://hdl.handle.net/10523/2282

Chicago Manual of Style (16^th Edition):

Ariffin, Mimi. “Crosstalk Between Iron Homeostasis And Nitric Oxide Signalling: Impact On Cancer Cell Viability .” 2012. Masters Thesis, University of Otago. Accessed September 20, 2019. http://hdl.handle.net/10523/2282.

MLA Handbook (7^th Edition):

Ariffin, Mimi. “Crosstalk Between Iron Homeostasis And Nitric Oxide Signalling: Impact On Cancer Cell Viability .” 2012. Web. 20 Sep 2019.

Vancouver:

Ariffin M. Crosstalk Between Iron Homeostasis And Nitric Oxide Signalling: Impact On Cancer Cell Viability . [Internet] [Masters thesis]. University of Otago; 2012. [cited 2019 Sep 20]. Available from: http://hdl.handle.net/10523/2282.

Council of Science Editors:

Ariffin M. Crosstalk Between Iron Homeostasis And Nitric Oxide Signalling: Impact On Cancer Cell Viability . [Masters Thesis]. University of Otago; 2012. Available from: http://hdl.handle.net/10523/2282

Iowa State University

24. Li, Zheng. Phase behavior of iron oxide doping with ethylbenzene dehydrogenation catalyst promoters.

Degree: 2009, Iowa State University

URL: https://lib.dr.iastate.edu/etd/10558

► Potassium-promoted iron oxide is the primary catalyst for dehydrogenating ethylbenzene to styrene. Due to an increasing demand for saving energy, there is a strong incentive… (more)

▼ Potassium-promoted iron oxide is the primary catalyst for dehydrogenating ethylbenzene to styrene. Due to an increasing demand for saving energy, there is a strong incentive to operate the reaction at reduced steam/ethylbenzene molar ratio, since a large amount of steam is used in the process. However, the catalyst experiences short-term deactivation under low S/EB conditions. Active site blocking by surface carbon and iron oxide reduction by either surface carbon or H2 are two possible deactivation mechanisms. However, the relative importance of these two mechanisms is not understood. It is very important to understand which deactivation mechanism dominates as different mechanism will lead to different development approaches. In this study, phase transitions of iron oxide based catalyst samples were investigated with TGA and XRD to understand the intrinsic deactivation mechanism. The effects of various promoters on iron oxide activity and stability were also studied. Hydrogen and carbon dioxide were utilized as the gas environment individually to avoid convolution of effects. Ethylbenzene was then applied to characterize the combined effects of hydrogen, carbon dioxide, and surface coke. Potassium efficiently increases the activity of iron oxide and its effect on phase stability was examined. The active potassium ferrite phase and potassium polyferrite, which has been considered a storage phase of potassium and iron (III), can be converted to each other when exposed to carbon dioxide or hydrogen. It was also found that the deposited surface carbon was a stronger reductant than hydrogen. Other minor promoters are also used in dehydrogenation catalysts to enhance stability, enhance activity, or increase the styrene selectivity. Therefore, their effects on the catalyst were also examined in this study. Chromium, calcium, and cerium were found to have a positive effect on iron oxide stability, while vanadium and molybdenum had negative impacts on iron oxide stability. Activity enhancement could be achieved by doping with chromium, calcium, molybdenum, and cerium. Vanadium greatly reduced the activity of catalyst, since it inhibited formation of the active phase.

Subjects/Keywords: dehydrogenation catalyst; iron oxide reduction; potassium ferrite; potassium-promoted iron oxide; Biological Engineering; Chemical Engineering

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APA (6^th Edition):

Li, Z. (2009). Phase behavior of iron oxide doping with ethylbenzene dehydrogenation catalyst promoters. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/10558

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Li, Zheng. “Phase behavior of iron oxide doping with ethylbenzene dehydrogenation catalyst promoters.” 2009. Thesis, Iowa State University. Accessed September 20, 2019. https://lib.dr.iastate.edu/etd/10558.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Li, Zheng. “Phase behavior of iron oxide doping with ethylbenzene dehydrogenation catalyst promoters.” 2009. Web. 20 Sep 2019.

Vancouver:

Li Z. Phase behavior of iron oxide doping with ethylbenzene dehydrogenation catalyst promoters. [Internet] [Thesis]. Iowa State University; 2009. [cited 2019 Sep 20]. Available from: https://lib.dr.iastate.edu/etd/10558.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Li Z. Phase behavior of iron oxide doping with ethylbenzene dehydrogenation catalyst promoters. [Thesis]. Iowa State University; 2009. Available from: https://lib.dr.iastate.edu/etd/10558

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

25. Lin, Sian-jhang. Effect of structural characteristics on adsorption of pharmaceuticals by graphene oxide-iron oxide nanocomposite material.

Degree: Master, Environmental Engineering, 2017, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0812117-120359

► Pharmaceuticals and personal care products (PPCPs) have been detected in the environment repeatedly and are known to be difficultly removed in conventional wastewater treatment technologies.… (more)

▼ Pharmaceuticals and personal care products (PPCPs) have been detected in the environment repeatedly and are known to be difficultly removed in conventional wastewater treatment technologies. Graphene oxide (GO), due to its large surface area and modifiable functional groups, has the potential to be applied as a novel wastewater treatment technology. Considered the nano-size of GO material, the GO-iron oxide (GO/Fe3O4) composite with high adsorption capacity was synthesized by co-precipitation in this study, assisting in its quickly removal from the water phase with a magnetic force after treatment. The feasibility of this composite to remove pharmaceuticals in waters was investigated, with respect to the effects of the molecular structures of pharmaceuticals and preparation of the composite. The pharmaceuticals of interest included diclofenac, metformin, and propranolol. The Hummers method was employed to prepare the GO, following by synthesis to generate the GO/Fe3O4 suspension and particles with different iron contents. As to the physicochemical characteristics of the composites, the GO/Fe3O4 possessed a GO content from 15 % to 40 %, a surface area from 302 to 407 m2/g, fraction of the micro-pore with a diameter below 2 nm from 7 % to 25 %, showing a different result from those published. For the adsorption isotherms, at pH 6, the adsorption performance followed the order of propranolol > diclofenac > metformin by using the GO/Fe3O4 with low iron content (S2.5). Given its three-dimensional structure, metformin was less possible to be adsorped into the micro pores of the GO/Fe3O4. However, propranolol possesses naphthalene-like two-dimensional functional group, enhancing its adsorption by the micro-pores of the GO/Fe3O4. By increasing the iron content of the composites, the adsorption of diclofenac was better than that of propranolol. The chlorines on the benzene ring of diclofenac reducing the electronic density of diclofenac was one possible explanation for the enhanced adsorption. For the GO/Fe3O4 suspension as the adsorbent, the adsorption performance of propranolol was the best, whereas diclofenac was less adsorbed when the suspension possessed low iron contents. By increasing the iron content of the the adsorbent, the adsorption of diclofenac became the best, with the metformin adsorption was the worst. Both negative charges of diclofenac and GO/Fe3O4 suspension at low iron contents inhibited the diclofenac adsorption at a neutral pH, while the adsorption of the other two pharmaceuticals still occurred via electric attraction. When the iron content of the adsorbent increased (e.g.,S72), the surface charge of the suspension became neutral enhanced the diclofenac adsorption. The adsorptions of pharmaceuticals followed the pseudo-second-order equation, implying the effects of the pharmaceutical concentration and GO/Fe3O4 n the reaction rate. The adsorption onto particles reached equilibrium after 360 minutes when using the powder adsorbents, whereas the adsorption onto suspension reached equilibrium in 60… Advisors/Committee Members: Wei-hsiang Chen (committee member), Chun-hu Chen (chair), Shu-kuang Ning (chair).

Subjects/Keywords: Adsorption kinetics; Graphene oxide; Iron oxide; Pharmaceutical; Molecular structure; Adsorption isotherm

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APA (6^th Edition):

Lin, S. (2017). Effect of structural characteristics on adsorption of pharmaceuticals by graphene oxide-iron oxide nanocomposite material. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0812117-120359

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lin, Sian-jhang. “Effect of structural characteristics on adsorption of pharmaceuticals by graphene oxide-iron oxide nanocomposite material.” 2017. Thesis, NSYSU. Accessed September 20, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0812117-120359.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lin, Sian-jhang. “Effect of structural characteristics on adsorption of pharmaceuticals by graphene oxide-iron oxide nanocomposite material.” 2017. Web. 20 Sep 2019.

Vancouver:

Lin S. Effect of structural characteristics on adsorption of pharmaceuticals by graphene oxide-iron oxide nanocomposite material. [Internet] [Thesis]. NSYSU; 2017. [cited 2019 Sep 20]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0812117-120359.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lin S. Effect of structural characteristics on adsorption of pharmaceuticals by graphene oxide-iron oxide nanocomposite material. [Thesis]. NSYSU; 2017. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0812117-120359

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

26. CHANG-JUI, HUANG. Removals and reaction pathways of chlorpheniramine and nitrosamine-formation potentials by graphene oxide/Fe3O4 composites with catalytic reaction and adsorption.

Degree: Master, Environmental Engineering, 2018, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0706118-175254

► Graphene oxide (GO), due to its hexagonal honeycomb and two-dimensional carbon material, is a novel material with a planar structure and high specific surface area… (more)

▼ Graphene oxide (GO), due to its hexagonal honeycomb and two-dimensional carbon material, is a novel material with a planar structure and high specific surface area (e.g., 2600 m2/g). GO is known to be a good adsorbent for a numner of organic and inorganic materials in water. In addition, a great numer of different types of functional groups and excellent electron-transport property make GO a potential catalyst for oxidation-reudction reactions. Pharmaceuticals and personal care products (PPCPs) are widely used at present. Chlorpheniramine is one PPCP commonly used to prevent allergic diseases. Meanwhile, the adverse effects of the occurrence of chlorpheniramine in the envrionemnt has been reported. More toxic and carcinogenic nitrosamines are formed during disinfection or oxidation of chlorpheniramine in water and wastewater treatments, raising the public concern for these emerging contaminants. In this study, the adsorption of chlorpheniramine toward graphene oxide/iron oxide (GO/Fe3O4) composites and potential catalytic degradation on the surface of the composites were investigated. It is suggested in the results that when the mass ratio of FeCl3 to GO in the composite was 2.5, the MRR (material removal rate) of chlorapheniramine at pH 9 in 30 mins with the addioton of 1.75 v% of H2O2 was 52.27 mg/g. An apprecciable level of chlorpheniramine (23.12 mg/g) was removed even the reused composite was applied. The surfaces of the GO/Fe3O4 composite before and after the reactions were analyzed by using the scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). It was found that the structure of the composite was changed possibly by the reactions with free radicals. The reduction of hydrogen-oxide (OH) functional group responsible for hydrogen-catalyzed reaction is one possible explanation for the decrease of the MRR. By adsorption and catalytic reaction, more than 95% of N-nitrosodimethylamine (NDMA) formation-potential was removed within 30 min. With a high background intereference (e.g., a natural organic matter concentration 16 times higher than that of chlorpheniramine), the MRR was only decreased by 37.39%, suggesting the feasibility of using this composite on real sites. The possible pathways of degradation of chlorpheniramine and formation of different nitrosamines during adsorption and catalytic reactions in the experiments were proposed. Advisors/Committee Members: QIU,JING-TIAN (chair), CHEN,JUN-HU (chair), CHEN,WEI-XIANG (committee member), LIN,ZHI-GAO (chair).

Subjects/Keywords: Nitrosamine; Graphene oxide; Degradation; Adsorption; Fenton-like catalysis; Iron oxide

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APA (6^th Edition):

CHANG-JUI, H. (2018). Removals and reaction pathways of chlorpheniramine and nitrosamine-formation potentials by graphene oxide/Fe3O4 composites with catalytic reaction and adsorption. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0706118-175254

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

CHANG-JUI, HUANG. “Removals and reaction pathways of chlorpheniramine and nitrosamine-formation potentials by graphene oxide/Fe3O4 composites with catalytic reaction and adsorption.” 2018. Thesis, NSYSU. Accessed September 20, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0706118-175254.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

CHANG-JUI, HUANG. “Removals and reaction pathways of chlorpheniramine and nitrosamine-formation potentials by graphene oxide/Fe3O4 composites with catalytic reaction and adsorption.” 2018. Web. 20 Sep 2019.

Vancouver:

CHANG-JUI H. Removals and reaction pathways of chlorpheniramine and nitrosamine-formation potentials by graphene oxide/Fe3O4 composites with catalytic reaction and adsorption. [Internet] [Thesis]. NSYSU; 2018. [cited 2019 Sep 20]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0706118-175254.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

CHANG-JUI H. Removals and reaction pathways of chlorpheniramine and nitrosamine-formation potentials by graphene oxide/Fe3O4 composites with catalytic reaction and adsorption. [Thesis]. NSYSU; 2018. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0706118-175254

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University

27. Otake, Tsubasa. Understanding Redox Processes in Surface Environments from Iron Oxide Transformations and Multiple Sulfur Isotope Fractionations.

Degree: PhD, Geoscience, 2008, Penn State University

URL: https://etda.libraries.psu.edu/catalog/9280

► The ultimate goal of this thesis was to increase our understanding of the evolution of the atmosphere, hydrosphere, biosphere, and thermal structure of early Earth.… (more)

▼ The ultimate goal of this thesis was to increase our understanding of the evolution of the atmosphere, hydrosphere, biosphere, and thermal structure of early Earth. I approached this goal by evaluating the origins of magnetite and hematite in Banded Iron Formations (BIFs), associated iron ores, and mass-independently-fractionated sulfur isotopes (MIF-S) in Precambrian sedimentary rocks. The major deposition of BIFs before 1.9 Ga has been thought to reflect a period of globally anoxic oceans, at least the deep ocean. This theory springs from the conventional model which requires the transport of Fe2+ from the deep ocean to the continental shelf. Researchers have proposed that magnetite, the most common Fe-bearing mineral in typical oxide-type BIFs (e.g., Algoma-type), was transformed from hematite by a redox reaction with organic carbon or siderite during metamorphism. However, another process that can transform hematite to magnetite may be a non-redox reaction with Fe2+-rich hydrothermal fluids. I have experimentally investigated the transformation mechanisms of iron oxides under hydrothermal conditions. Magnetite or hematite was reacted with an acid under H2-rich hydrothermal conditions (100-250ºC). Non-redox transformations between magnetite and hematite: Fe3O4(mt) + 2H+(aq) ↔ Fe2O3(hm) + Fe2+(aq) + H2O (1), occurred rapidly in both direactions, and much more efficiently than redox transformations under low temperature hydrothermal conditions (e.g., 150ºC). Non-redox transformation of hematite to magnetite may have been responsible for the transformation of primary hematite to magnetite in BIFs that were poor in reductants (e.g., organic matter). Because non-redox transformation of hematite to magnetite, which increases molar volume, is most likely to occur during early diagenesis, the Fe source for the BIFs would have been proximal to the depositional sites. The transformation further suggests that formation of BIFs was a local phenomenon, rather than the long distance transport of Fe from the deep ocean to continental shelves through a global anoxic ocean. This experimental study also indicates that the redox transformation of hematite to magnetite by hydrogen can be important even at 150ºC under certain conditions (e.g., pH, presence of catalyst). Both of the transformation mechanisms may have been important in many oxide-type BIFs that are associated with volcanic rocks, are not subjected to high-grade metamorphism, and have very low organic carbon content (<0.01%). The world’s major iron ores are high-grade hematite iron ores developed from low-grade BIFs through transformation of magnetite to hematite. In all previous models, molecular oxygen from the atmosphere has been considered to be the oxidant. Therefore, such ore formation has been linked to the oxygenation of the atmosphere. However, I have experimentally demonstrated that magnetite is transformed to hematite by a reaction with an acidic fluid under hydrothermal conditions. Because this transformation process facilitates water-rock interactions…

Subjects/Keywords: mass-independent fractionation; sulfur isotope; banded iron formation; transformation; iron oxide; ab initio calculation

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APA (6^th Edition):

Otake, T. (2008). Understanding Redox Processes in Surface Environments from Iron Oxide Transformations and Multiple Sulfur Isotope Fractionations. (Doctoral Dissertation). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/9280

Chicago Manual of Style (16^th Edition):

Otake, Tsubasa. “Understanding Redox Processes in Surface Environments from Iron Oxide Transformations and Multiple Sulfur Isotope Fractionations.” 2008. Doctoral Dissertation, Penn State University. Accessed September 20, 2019. https://etda.libraries.psu.edu/catalog/9280.

MLA Handbook (7^th Edition):

Otake, Tsubasa. “Understanding Redox Processes in Surface Environments from Iron Oxide Transformations and Multiple Sulfur Isotope Fractionations.” 2008. Web. 20 Sep 2019.

Vancouver:

Otake T. Understanding Redox Processes in Surface Environments from Iron Oxide Transformations and Multiple Sulfur Isotope Fractionations. [Internet] [Doctoral dissertation]. Penn State University; 2008. [cited 2019 Sep 20]. Available from: https://etda.libraries.psu.edu/catalog/9280.

Council of Science Editors:

Otake T. Understanding Redox Processes in Surface Environments from Iron Oxide Transformations and Multiple Sulfur Isotope Fractionations. [Doctoral Dissertation]. Penn State University; 2008. Available from: https://etda.libraries.psu.edu/catalog/9280

Louisiana State University

28. Julfiker, Md Julkernine. Reactivity of Iron-Sulfur Proteins with Nitric Oxide.

Degree: MS, 2016, Louisiana State University

URL: etd-04062016-121004 ; https://digitalcommons.lsu.edu/gradschool_theses/3329

► Iron-sulfur ([Fe-S]) proteins are widely distributed in the biological systems. These proteins are involved in diverse fundamental life processes such as photosynthesis, respiration, ribosome biogenesis,… (more)

Subjects/Keywords: electoron paramagnetic resonance spectroscopy; thioredoxin reductase; thioredoxin; dinitrosyl iron complexes; nitric-oxide; iron-sulfur proteins

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Julfiker, M. J. (2016). Reactivity of Iron-Sulfur Proteins with Nitric Oxide. (Masters Thesis). Louisiana State University. Retrieved from etd-04062016-121004 ; https://digitalcommons.lsu.edu/gradschool_theses/3329

Chicago Manual of Style (16^th Edition):

Julfiker, Md Julkernine. “Reactivity of Iron-Sulfur Proteins with Nitric Oxide.” 2016. Masters Thesis, Louisiana State University. Accessed September 20, 2019. etd-04062016-121004 ; https://digitalcommons.lsu.edu/gradschool_theses/3329.

MLA Handbook (7^th Edition):

Julfiker, Md Julkernine. “Reactivity of Iron-Sulfur Proteins with Nitric Oxide.” 2016. Web. 20 Sep 2019.

Vancouver:

Julfiker MJ. Reactivity of Iron-Sulfur Proteins with Nitric Oxide. [Internet] [Masters thesis]. Louisiana State University; 2016. [cited 2019 Sep 20]. Available from: etd-04062016-121004 ; https://digitalcommons.lsu.edu/gradschool_theses/3329.

Council of Science Editors:

Julfiker MJ. Reactivity of Iron-Sulfur Proteins with Nitric Oxide. [Masters Thesis]. Louisiana State University; 2016. Available from: etd-04062016-121004 ; https://digitalcommons.lsu.edu/gradschool_theses/3329

University of New Mexico

29. Vreeland, Erika. Development of Novel Synthetic Methods for Size-Tunable Synthesis of Superparamagnetic Iron Oxide Nanoparticles.

Degree: Chemical and Biological Engineering, 2014, University of New Mexico

URL: http://hdl.handle.net/1928/24353

► The properties of magnetic nanoparticles vary dramatically with size, so reproducibly controlling size is critical for practical applications. This is particularly true when moving into… (more)

▼ The properties of magnetic nanoparticles vary dramatically with size, so reproducibly controlling size is critical for practical applications. This is particularly true when moving into clinical settings, where regulatory approval requires demonstrated reproducibility in efficacy that can only be achieved with excellent size control. A number of methods for the synthesis of magnetic nanoparticles have been published, although the thermal decomposition of iron(III) precursors in organic solvents has been shown to yield high quality particles with low shape and size dispersity. Currents methods lack reproducibility resulting from non-stoichiometric starting materials, and reliance on reaction parameters, such as temperature ramp rate, that are nearly impossible to replicate between syntheses. Limited control of particle size has been demonstrated, though no truly size-tunable synthetic method has been proposed. Here, we endeavor to remove the sources of reproducibility in the existing methods and achieve size control of synthesized particles while maintaining narrow shape and size dispersity. Further, we endeavor to understand the physical mechanisms by which the control of size is achieved. Here, we detail two alternative approaches to the synthesis of an iron(III) precursor containing a known quantity of iron. These materials are further evaluated for use in the preparation of high quality iron oxide nanoparticles with high magnetic saturation values. Existing synthesis methods are also evaluated, leading to the development of a novel synthetic method that yields tunability of sizes over a broad range with nanometer precision and nearly uniform size and shape dispersity. By manipulating reaction parameters such as temperature and reagent concentration, the kinetics of the reaction can be controlled, revealing new insights into the growth of particles in a highly supersaturated monomer solution. We expect that our approach will resolve the challenges associated with the reproducible synthesis of spherical magnetite nanoparticles with low shape and size dispersity, and provide scalability required to meet commercial demand. Advisors/Committee Members: Atanassov, Plamen, Datye, Abhaya, Adolphi, Natalie, Huber, Dale.

Subjects/Keywords: Magnetite; nanoparticle; iron oleate; iron oxide; wustite; magnetometry; superparamagnetic; oleic acid; thermolysis

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Vreeland, E. (2014). Development of Novel Synthetic Methods for Size-Tunable Synthesis of Superparamagnetic Iron Oxide Nanoparticles. (Doctoral Dissertation). University of New Mexico. Retrieved from http://hdl.handle.net/1928/24353

Chicago Manual of Style (16^th Edition):

Vreeland, Erika. “Development of Novel Synthetic Methods for Size-Tunable Synthesis of Superparamagnetic Iron Oxide Nanoparticles.” 2014. Doctoral Dissertation, University of New Mexico. Accessed September 20, 2019. http://hdl.handle.net/1928/24353.

MLA Handbook (7^th Edition):

Vreeland, Erika. “Development of Novel Synthetic Methods for Size-Tunable Synthesis of Superparamagnetic Iron Oxide Nanoparticles.” 2014. Web. 20 Sep 2019.

Vancouver:

Vreeland E. Development of Novel Synthetic Methods for Size-Tunable Synthesis of Superparamagnetic Iron Oxide Nanoparticles. [Internet] [Doctoral dissertation]. University of New Mexico; 2014. [cited 2019 Sep 20]. Available from: http://hdl.handle.net/1928/24353.

Council of Science Editors:

Vreeland E. Development of Novel Synthetic Methods for Size-Tunable Synthesis of Superparamagnetic Iron Oxide Nanoparticles. [Doctoral Dissertation]. University of New Mexico; 2014. Available from: http://hdl.handle.net/1928/24353

University of New South Wales

30. Bligh, Mark William. Formation, fate and transformation of products of iron oxidation in coastal waters.

Degree: Civil & Environmental Engineering, 2009, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/44779 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:8076/SOURCE02?view=true

► Flux of ferrous iron (FeII) to the estuarine environment, whether from bottom sediments or via groundwater seepage, has been identified as a potentially important source… (more)

▼ Flux of ferrous iron (FeII) to the estuarine environment, whether from bottom sediments or via groundwater seepage, has been identified as a potentially important source of iron required for the development and sustenance of nuisance blooms of the toxic cyanobacteria Lyngbya majuscula in Moreton Bay, Queensland. However the rapid oxidation of FeII in seawater imparts importance to the resultant form of ferric iron (FeIII). Oxidation of FeII in the presence of natural organic matter (NOM) results in a mixture of FeIII-NOM complex and amorphous ferric oxides (AFO). The fate of these oxidation products has implications for the supply of iron to L. majuscula where transformations over time scales of hours are likely to be important.In this thesis the process of oxidation of FeII in seawater in the presence of NOM and the subsequent transformations of the products of oxidation are investigated. UV and visible spectroscopic techniques were used to monitor the production of organically complexed FeIII for both NOM and a model organic compound. Kinetic modelling of data facilitated the examination of key reactions, especially those involving AFO. Controls on the reactivity and aging of AFO were investigated using two different dissolution reactions to measure reactivity. Light scattering techniques were used to probe the structure of AFO and X-ray absorption spectroscopy was used to examine the coordination environment of Fe centres within AFO.Analysis of a kinetic model of iron transformations parameterised using the best available knowledge revealed large uncertainty surrounding the role of ligand classes in complex formation and dissociation and the role of AFO in both formation of oxidation products and the subsequent decay of organically complexed FeIII. Laboratory studies demonstrated that, within a wide range of initial concentrations, unstable mixtures of FeIII-NOM and AFO are produced from the oxidation of FeII in seawater containing NOM and that the organic complexes immediately commence transformation to AFO. Simulation using numerical kinetic modelling of the processes investigated indicated that AFO has a significant role in the processes of formation of oxidation products and dissociation of organically complexed FeIII. The rapid aging that AFO was recognised to undergo was successfully incorporated into the model though whether the aging was due toeither 1) increased coordination of Fe centres or 2) decreased Fe centre accessibility due to aggregation could not be ascertained from the model results. However, together with information regarding the coordination environment of the Fe centres and the particle and fractal structure of the aggregates, aggregation was considered most likely to be the factor responsible for the observed and modelled decreases in AFO reactivity. Advisors/Committee Members: Waite, T. David, Civil & Environmental Engineering, Faculty of Engineering, UNSW.

Subjects/Keywords: Reacivity; Iron oxidation; Iron oxide; Aging

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bligh, M. W. (2009). Formation, fate and transformation of products of iron oxidation in coastal waters. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/44779 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:8076/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Bligh, Mark William. “Formation, fate and transformation of products of iron oxidation in coastal waters.” 2009. Doctoral Dissertation, University of New South Wales. Accessed September 20, 2019. http://handle.unsw.edu.au/1959.4/44779 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:8076/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Bligh, Mark William. “Formation, fate and transformation of products of iron oxidation in coastal waters.” 2009. Web. 20 Sep 2019.

Vancouver:

Bligh MW. Formation, fate and transformation of products of iron oxidation in coastal waters. [Internet] [Doctoral dissertation]. University of New South Wales; 2009. [cited 2019 Sep 20]. Available from: http://handle.unsw.edu.au/1959.4/44779 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:8076/SOURCE02?view=true.

Council of Science Editors:

Bligh MW. Formation, fate and transformation of products of iron oxidation in coastal waters. [Doctoral Dissertation]. University of New South Wales; 2009. Available from: http://handle.unsw.edu.au/1959.4/44779 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:8076/SOURCE02?view=true

Open Access Theses and Dissertations