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

作者：Tamaki Yusuke; Watanabe Katsuhiro; Koike Kazuhide; Inoue Haruo; Morimoto Tatsuki; Ishitani Osamu^*

来源：Faraday Discussions, 2012, 155: 115-127.

DOI：10.1039/c1fd00091h

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 Phi(CO) = 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.

• 出版日期2012