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You searched for +publisher:"University of North Carolina" +contributor:("Luo, Hanlin"). One record found.

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University of North Carolina

1. Luo, Hanlin. Metal Complexes Derivatized Metal Oxides as Nanostructured Electrodes in Electrochemistry or Photoelectrochemistry .

Degree: 2014, University of North Carolina

This dissertation focuses on three types of metal oxide nanostructured electrodes: niobium oxides(Nb2O5), strontium oxides ( SrTiO3), and antimony-doped tin oxides (ATO) in electrochemical and/or photoelectrochemical applications. The chapter 2 and 3 discuss Nb2O5 and SrTiO3 respectively. Both metal oxides were investigated as alternative photoanodes to titanium dioxides (TiO2) in Dye-sensitized solar cells (DSSCs) and Dye-sensitized photoelectrosyntheis cells (DSPECs) because their conduction band are reported to be ~ 0.2-0.4 eV higher than TiO2. Systematic investigations on Nb2O5 and SrTiO3 in comparison to TiO2 in equivalent devices were conducted, with conduction band, energy levels of chromophore, electron transfer dynamics, current-voltage relationship, and H2 evolution or photo to current conversion efficiency discussed in the content. T-phase orthorhombic Nb2O5 films have shown conduction band potential slightly positive than that for anatase TiO2. Trap state distributions, conduction band energies, and interfacial barriers appear to contribute to a slower back electron transfer rate, lower injection yield on the nsec timescale, and a lower Voc for T-phase Nb2O5 compared to anatase TiO2. In chapter 3, SrTiO3 photoanodes indicated slower back electron transfer than TiO2 after a Znic porphyrin sensitization. They suffered from the low energy conversion efficiency due to large interfacial charge transfer resistance between conduction band of SrTiO3 and electrolyte and high conduction band edge. The chapter 4 explores fabrication of 3-D mesoporous nanostructured ATO electrodes and their applications in electrochemical and photoelectrochemical catalysis. ATO nanostructured electrodes are characteristic of high interfacial area and drift electron transport. To obtain large-pore mesoporous materials, amphiphilic copolymers are chosen to as templates that unfortunately suffer from poor control of interaction with metal precursors and requirements for post annealing. Mesoporous ATO nanoelectrodes were fabricated based on ATO nanocrystals by microwave irradiation and grafted copolymers, poly (vinyl chloride)-g-poly (oxyethylene methacrylate) (PVC-g-POEM), templating. ATO nanoelectrodes indicated rapid electron transfer and proved to be suitable substrates for electrochemical catalysis after derivatized by a ruthenium water oxidation catalyst. Moreover, core-shell photoanodes, consisting of core of mesoporous conductive ATO film and shell of TiO2 by atomic layer deposition (ALD), were derivatized by a ruthenium chromophore, working as a photocathode in H2 evolution. Advisors/Committee Members: Luo, Hanlin, Meyer, Thomas, Lopez, Rene, You, Wei, Warren, Scott, Cahoon, James.

Subjects/Keywords: Materials science; College of Arts and Sciences; Department of Applied Physical Sciences; Materials Science Graduate Program

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APA (6th Edition):

Luo, H. (2014). Metal Complexes Derivatized Metal Oxides as Nanostructured Electrodes in Electrochemistry or Photoelectrochemistry . (Thesis). University of North Carolina. Retrieved from https://cdr.lib.unc.edu/record/uuid:67290cc1-a9c1-4f63-a18b-2e0f57c6172c

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

Chicago Manual of Style (16th Edition):

Luo, Hanlin. “Metal Complexes Derivatized Metal Oxides as Nanostructured Electrodes in Electrochemistry or Photoelectrochemistry .” 2014. Thesis, University of North Carolina. Accessed November 23, 2020. https://cdr.lib.unc.edu/record/uuid:67290cc1-a9c1-4f63-a18b-2e0f57c6172c.

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

MLA Handbook (7th Edition):

Luo, Hanlin. “Metal Complexes Derivatized Metal Oxides as Nanostructured Electrodes in Electrochemistry or Photoelectrochemistry .” 2014. Web. 23 Nov 2020.

Vancouver:

Luo H. Metal Complexes Derivatized Metal Oxides as Nanostructured Electrodes in Electrochemistry or Photoelectrochemistry . [Internet] [Thesis]. University of North Carolina; 2014. [cited 2020 Nov 23]. Available from: https://cdr.lib.unc.edu/record/uuid:67290cc1-a9c1-4f63-a18b-2e0f57c6172c.

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

Council of Science Editors:

Luo H. Metal Complexes Derivatized Metal Oxides as Nanostructured Electrodes in Electrochemistry or Photoelectrochemistry . [Thesis]. University of North Carolina; 2014. Available from: https://cdr.lib.unc.edu/record/uuid:67290cc1-a9c1-4f63-a18b-2e0f57c6172c

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

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