【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 con-structing the hybrid structure with Cu2S nanopa
【机 构】
：
Key Laboratory of Applied Chemistry of Zhejiang Province,Department of Chemistry,Zhejiang University
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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.
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