Ryuichi Nakada, Chao Zhang, Jo Onodera, Toshiya Tanaka, Megumi Okazaki, Guigang Zhang and Kazuhiko Maeda
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Light-intensity dependence of visible-light CO2 reduction over Ru(ii)-complex/Ag/polymeric carbon nitride hybrid photocatalysts†
Photocatalytic CO2 reduction over Ru(II)-complex/Ag/polymeric carbon nitride (PCN) was studied with respect to light intensity and the type of Ru(II) complex. In experiments using two different Ru(II) complex cocatalysts, the reduction potential of the Ru complex was found to balance efficient CO2 reduction on the Ru complex with electron transfer from Ag/PCN. This balance avoided the formation of H2 as a byproduct, minimized charge accumulation in Ag/PCN, and maximized the apparent quantum yield for CO2-to-HCOOH conversion.
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