The performances of heterogeneous catalysts can be effectively improved by optimizing the catalysts via appropriate structure design.Herein,we show that the catalysis of cuprous sulfide can be boosted by con-structing the hybrid structure with Cu2S nanoparticles on amorphous CuSx matrix (Cu2S/CuSx).In the photocatalytic CO2 reduction under visible light irradiation,the Cu2S/CuSx exhibited a CO production rate at 4.0 μmol h-1 that is 12-fold higher than that of the general Cu2S catalyst.Further characterizations reveal that the Cu2S/CuSx has two reaction systems that realize the biomimetic catalysis,involving in the light reaction on the Cu2S nanoparticle-CuSx matrix heterojunctions for proton/electron production,and the dark reaction on the defect-rich CuSx for CO2 reduction.The CuSx matrix could efficiently activate CO2 and stabilize the split hydrogen species to hinder undesired hydrogen evolution reaction,which ben-efits the proton-electron transfer to reduce CO2,a key step for bridging the two reaction systems.

Ling-Xiang Wang;Zhi-Qiang Wang;Liang Wang;Zhiyuan Yang;Qiuyan Zhu;Yifeng Liu;Wei Fang;Xue-Qing Gong;Yuefeng Liu;Xiaolong Liu;Feng-Shou Xiao

Key Laboratory of Applied Chemistry of Zhejiang Province,Department of Chemistry,Zhejiang University,Hangzhou 310028,Zhejiang,China;Key Laboratory for Advanced Materials and Joint International Research Laboratory for Precision Chemistry and Molecular Engineering,Feringa Nobel Prize Scientist Joint Research Center,Centre for Computational Chemistry and Research Institute of Industrial Catalysis,School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 200237,China;Key Lab of Biomass Chemical Engineering of Ministry of Education,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,Zhejiang,China;Dalian National Laboratory for Clean Energy (DNL),Dalian Institute of Chemical Physics (DICP),Chinese Academy of Science,Dalian 116023,Liaoning,China;State Key Laboratory of Optoelectronic Materials and Technologies,School of Materials,Sun Yat-Sen University,Guangzhou 510275,Guangdong,China

能源化学

[1]Ling-Xiang Wang;Zhi-Qiang Wang;Liang Wang;Zhiyuan Yang;Qiuyan Zhu;Yifeng Liu;Wei Fang;Xue-Qing Gong;Yuefeng Liu;Xiaolong Liu;Feng-Shou Xiao-.CuSx-mediated two reaction systems enable biomimetic photocatalysis in CO2 reduction with visible light)[J].能源化学,2022(02):497-504

CuSx

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