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CO2 Reduction on Cu Oxide Photoelectrodes

Vasconi, Melissa A.
http://rave.ohiolink.edu/etdc/view?acc_num=ysu1342117852

Abstract Details

2012, Master of Science in Chemistry, Youngstown State University, Department of Chemistry.
Copper electrodes were made with three different types of surfaces: copper metal, cuprous oxide, and cupric oxide. The metal electrode was made from a polished and chemically etched sheet, while the oxides were made by varying the thermal treatment of the copper metal in air. The electrodes were characterized by X-ray Photoelectron Spectroscopy and X-ray Diffraction. Background voltammetric behavior was consistent with theory as indicated by the Pourbaix diagram for Cu in aqueous media. The electrodes were then tested for activity toward catalytic electroreduction of carbon dioxide, CO2. Cyclic voltammetry with and without CO2 gave similar results, so that it was determined that any CO2 reduction was occurring within the voltage range for H2 evolution, which started at -0.7 V versus Ag/AgCl. Photoelectrochemical experiments were performed using a Xe arc light source. Cyclic voltammetry and chronoamperometric studies showed enhanced current behavior in the light. While chronoamperometry at -1.0 V generally showed current decay with time, the CuO electrode actually rose, supporting currents in excess of 100 mA after 10 min. Electrolyte samples taken after extended amperometry over an hour’s time and tested via Infrared Spectrometry showed a reduction product or products possessing O-H and C-H bonds.
Clovis Linkous, PhD (Advisor)
Larry Curtin, PhD (Committee Member)
Timothy Wagner, PhD (Committee Member)
60 p.
Chemistry
photoelectrochemistry; cupric oxide; cuprous oxide; CO2 fixation

Recommended Citations

Citations

  • Vasconi, M. A. (2012). CO2 Reduction on Cu Oxide Photoelectrodes [Master's thesis, Youngstown State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1342117852

    APA Style (7th edition)

  • Vasconi, Melissa. CO2 Reduction on Cu Oxide Photoelectrodes. 2012. Youngstown State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ysu1342117852.

    MLA Style (8th edition)

  • Vasconi, Melissa. "CO2 Reduction on Cu Oxide Photoelectrodes." Master's thesis, Youngstown State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1342117852

    Chicago Manual of Style (17th edition)

ysu1342117852
854
© 2012, all rights reserved.
This open access ETD is published by Youngstown State University and OhioLINK.