Volume 155, 2012
From the journal:

Faraday Discussions

Development of highly efficient supramolecular CO2 reduction photocatalysts with high turnover frequency and durability†

Yusuke Tamaki,a   Katsuhiro Watanabe,a   Kazuhide Koike,b   Haruo Inoue,c   Tatsuki Morimotoa  and  Osamu Ishitani*a  

* Corresponding authors

a Department of Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama 2-12-1-E1-9, Meguro-ku, Tokyo, Japan
E-mail: ishitani@chem.titech.ac.jp

b National Institute of Advanced Industrial Science and Technology, Onogawa 16-1, Tsukuba, Japan

c Department of Applied Chemistry, Graduate School of Urban Environmental Science, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji-city, Tokyo, Japan

Abstract

New Ru(II)–Re(I) supramolecular photocatalysts with a rhenium(I) biscarbonyl complex as a catalyst unit were synthesized. They photocatalyzed CO2 reduction to CO using a wide-range of visible light, and their photocatalytic abilities were strongly affected by the phosphorus ligands on the Re site. Especially, Ru–Re(FPh), with two P(p-FPh)3 ligands, exhibited tremendous photocatalytic properties, i.e.TNCO = 207 and ΦCO = 0.15, and, in addition, this is one of the fastest-operating photocatalysts for CO2 reduction to CO, with TFCO = 281 h−1. We also clarified a balance of transferred electrons in this photocatalytic reaction and found that the two electrons necessary for CO formation were provided by two sequential reductive quenching processes of the excited Ru photosensitizer unit by the reductant BNAH.

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Article information

DOI
https://doi.org/10.1039/C1FD00091H
Article type
Paper
Submitted
05 May 2011
Accepted
10 May 2011
First published
06 Jul 2011

Faraday Discuss., 2012,155, 115-127

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Development of highly efficient supramolecular CO2 reduction photocatalysts with high turnover frequency and durability

Y. Tamaki, K. Watanabe, K. Koike, H. Inoue, T. Morimoto and O. Ishitani, Faraday Discuss., 2012, 155, 115 DOI: 10.1039/C1FD00091H

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