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Artificial Z-Scheme Constructed with a Supramolecular Metal Complex and Semiconductor for the Photocatalytic Reduction of CO2

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Sekizawa, Keita, Maeda, Kazuhiko, Domen, Kazunari, Koike, Kazuhide, Ishitani, Osamu·2013·Journal of the American Chemical Society

Abstract

A hybrid for the visible-light-driven photocatalytic reduction of CO2 using methanol as a reducing agent was developed by combining two different types of photocatalysts: a Ru(II) dinuclear complex (RuBLRu') used for CO2 reduction is adsorbed onto Ag-loaded TaON (Ag/TaON) for methanol oxidation. Isotope experiments clearly showed that this hybrid photocatalyst mainly produced HCOOH (TN = 41 for 9 h irradiation) from CO2 and HCHO from methanol. Therefore, it converted light energy into chemical energy (ΔG° = +83.0 kJ/mol). Photocatalytic reaction proceeds by the stepwise excitation of Ag/TaON and the Ru dinuclear complex on Ag/TaON, similar to the photosynthesis Z-scheme.

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Authors
Sekizawa, K., Maeda, K., Domen, K., Koike, K., & Ishitani, O.
Venue
Journal of the American Chemical Society
Published
2013-03-13
Volume
135
Issue
12
Pages
4596-4599
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
OpenAlex
W2142622397
Cited by
445
References
0
FWCI
16.95
Type
journal article
Language
en
Open access
hybrid

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