Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 8, Pages 2406-2409Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201411170
Keywords
artificial photosynthesis; carbon dioxide fixation; carbon nitride; heterogeneous photocatalysis; semiconductors
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Funding
- Faculty of Science, Tokyo Institute of Technology
- PRESTO/JST [25709078]
- Photon and Quantum Basic Research Coordinated Development Program (MEXT, Japan)
- [25107512]
- Grants-in-Aid for Scientific Research [24107005] Funding Source: KAKEN
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A heterogeneous photocatalyst system that consists of a ruthenium complex and carbon nitride (C3N4), which act as the catalytic and light-harvesting units, respectively, was developed for the reduction of CO2 into formic acid. Promoting the injection of electrons from C3N4 into the ruthenium unit as well as strengthening the electronic interactions between the two units enhanced its activity. The use of a suitable solvent further improved the performance, resulting in a turnover number of greater than 1000 and an apparent quantum yield of 5.7% at 400nm. These are the best values that have been reported for heterogeneous photocatalysts for CO2 reduction under visible-light irradiation to date.
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