Light-intensity dependence of visible-light CO2 reduction over Ru(II)-complex/Ag/polymeric carbon nitride hybrid photocatalysts

Ryuichi Nakada; Chao Zhang; Jo Onodera; Toshiya Tanaka; Megumi Okazaki; Guigang Zhang; Kazuhiko Maeda

doi:10.1039/D4SE01488J

Light-intensity dependence of visible-light CO₂ reduction over Ru(ii)-complex/Ag/polymeric carbon nitride hybrid photocatalysts†

Ryuichi Nakada,^a Chao Zhang,^b Jo Onodera,^a Toshiya Tanaka,^a Megumi Okazaki,

^a Guigang Zhang

*^b and Kazuhiko Maeda

*^ac

Author affiliations

* Corresponding authors

^a Department of Chemistry, School of Science, Institute of Science Tokyo, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
E-mail: maeda@chem.sci.isct.ac.jp

^b State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350108, P. R. China
E-mail: guigang.zhang@fzu.edu.cn

^c Research Center for Autonomous Systems Materialogy (ASMat), Institute of Science Tokyo, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8501, Japan

Abstract

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.

This article is part of the themed collection: Recent Open Access Articles

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DOI: https://doi.org/10.1039/D4SE01488J
Article type: Paper
Submitted: 25 Oct 2024
Accepted: 30 Nov 2024
First published: 02 Dec 2024
This article is Open Access

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Sustainable Energy Fuels, 2025,9, 947-952

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Light-intensity dependence of visible-light CO₂ reduction over Ru(II)-complex/Ag/polymeric carbon nitride hybrid photocatalysts

R. Nakada, C. Zhang, J. Onodera, T. Tanaka, M. Okazaki, G. Zhang and K. Maeda, Sustainable Energy Fuels, 2025, 9, 947 DOI: 10.1039/D4SE01488J

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