文献类型：期刊文献

英文题名：CuSx-mediated two reaction systems enable biomimetic photocatalysis in CO2 reduction with visible light

作者：Wang, Ling-Xiang[1]; Wang, Zhi-Qiang[3]; Wang, Liang[2]; Yang, Zhiyuan[1]; Zhu, Qiuyan[1]; Liu, Yifeng[1]; Fang, Wei[2]; Gong, Xue-Qing[3]; Liu, Yuefeng[4]; Liu, Xiaolong[5]; Xiao, Feng-Shou[1,2]

机构：[1] Key Laboratory of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310028, China; [2] Key Lab of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China; [3] 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; [4] Dalian National Laboratory for Clean Energy [DNL], Dalian Institute of Chemical Physics [DICP], Chinese Academy of Science, Dalian, Liaoning, 116023, China; [5] State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials, Sun Yat-Sen University, Guangzhou, Guangdong, 510275, China

年份：2021

卷号：65

起止页码：497

外文期刊名：Journal of Energy Chemistry

收录：EI(收录号：20212810626716)

语种：英文

外文关键词：Catalysis - Catalysts - Copper compounds - Electron transitions - Heterojunctions - Hydrogen - Light - Nanoparticles - Sulfur compounds

摘要：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 constructing 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 benefits the proton–electron transfer to reduce CO2, a key step for bridging the two reaction systems. ? 2021 Science Press