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Volume 155, 2012
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Development of highly efficient supramolecular CO2 reduction photocatalysts with high turnover frequency and durability

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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, RuRe(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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The article was received on 05 May 2011, accepted on 10 May 2011 and first published on 06 Jul 2011


Article type: Paper
DOI: 10.1039/C1FD00091H
Citation: 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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