Photoelectrochemical reduction of CO2 mediated with methylviologen at roughened silver electrodes |
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| Authors: | Junwei Zheng Tianhong Lu Therese M Cotton George Chumanov |
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| Institution: | 1. Department of Chemistry, Suzhou University, Suzhou 215006, PR China;2. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China;3. Department of Chemistry, Iowa State University, Ames, IA 50011, USA |
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| Abstract: | The photoelectrocatalytic effect for the reduction of CO2 mediated with methylviologen (MV) was studied at mercury, polished silver and roughened silver electrodes using electrochemical and surface-enhanced Raman scattering (SERS) techniques. A large photoelectrocatalytic effect for the reduction of CO2 in the presence of MV was observed at the roughened silver electrode, whereas there was only a very small photoelectrocatalytic current at a more negative potential on mercury and polished silver electrodes. The SERS spectra of MV in the presence and absence of CO2, along with the electrochemical results, demonstrate that the surface adsorbed complexes, MV | |
| Keywords: | Surface-enhanced Raman spectroscopy Silver electrode Methylviologen Photoelectrochemistry Carbon dioxide |
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