Journal
CHEMISTRY LETTERS
Volume 41, Issue 3, Pages 328-330Publisher
CHEMICAL SOC JAPAN
DOI: 10.1246/cl.2012.328
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Funding
- GCOE [B01]
- World Premier International Research Center (WPI) Initiative on Materials Nanoarchitectonics
- Ministry of Education, Culture, Sports, Science and Technology, Japan
- MEXT
- Grants-in-Aid for Scientific Research [23000009] Funding Source: KAKEN
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Photoelectrochemical carbon dioxide reduction was carried out at a p-type Si(111) electrode modified with a viologen molecular layer and [AuCl4](-) or [PdCl4](2-). It was proven that the reduction reaction was mediated by viologen moiety and while CO2 reduction was dominant at the Si(111) electrode modified with [PdCl4](2-) in the potential region where viologen moiety was in the first reduced state, it became dominant at the electrode modified with [AuCl4](-) when viologen moiety became the second reduced state. FT-IR measurement confirmed the formation of formic acid/formate ion at the [PdCl4](2-)/viologen-modified Si electrode.
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