Park, Hyunwoong and Vecitis, Chad D. and Hoffmann, Michael R. (2008) Solar-Powered Electrochemical Oxidation of Organic Compounds Coupled with the Cathodic Production of Molecular Hydrogen. Journal of Physical Chemistry A, 112 (33). pp. 7616-7626. ISSN 1089-5639. https://resolver.caltech.edu/CaltechAUTHORS:20150805-150523374
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Abstract
A Bi-doped TiO_2 anode, which is prepared from a mixed metal oxide coating deposited on Ti metal, is shown to be efficient for conventional water splitting. In this hybrid photovoltaic−electrochemical system, a photovoltaic (PV) cell is used to convert solar light to electricity, which is then used to oxidize a series of phenolic compounds at the semiconductor anode to carbon dioxide with the simultaneous production of molecular hydrogen from water/proton reduction at the stainless steel cathode. Degradation of phenol in the presence of a background NaCl electrolyte produces chlorinated phenols as reaction intermediates, which are subsequently oxidized completely to carbon dioxide and low-molecular weight carboxylic acids. The anodic current efficiency for the complete oxidation of phenolic compounds ranges from 3% to 17%, while the cathodic current efficiency and the energy efficiency for hydrogen gas generation range from 68% to 95% and 30% to 70%, respectively.
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| Additional Information: | © 2008 American Chemical Society. Received: April 1, 2008; Revised Manuscript ReceiVed: May 16, 2008. Published on Web 07/26/2008. Research was supported by the Daegu Gyeongbuk Institute of Science and Technology (DGIST), the KOSEF Nano R&D program (Grant No. 2005-02234), and the Hydrogen Energy Research & Development Center and 21st Century Frontier Research and Development Program of the Ministry of Science and Technology of Korea. | |||||||||
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| Issue or Number: | 33 | |||||||||
| Record Number: | CaltechAUTHORS:20150805-150523374 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20150805-150523374 | |||||||||
| Official Citation: | Solar-Powered Electrochemical Oxidation of Organic Compounds Coupled with the Cathodic Production of Molecular Hydrogen Hyunwoong Park, Chad D. Vecitis, and Michael R. Hoffmann The Journal of Physical Chemistry A 2008 112 (33), 7616-7626 DOI: 10.1021/jp802807e | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 59248 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Ruth Sustaita | |||||||||
| Deposited On: | 05 Aug 2015 22:55 | |||||||||
| Last Modified: | 09 Mar 2020 13:19 |
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