文献类型：期刊文献

英文题名：Cu2MoS4/CdS Nanosheet-Modified Nanowire Nanocomposites for Significantly Improved Visible Light-Driven Photocatalytic H2 Evolution Activity

作者：Zhao, Yanfei[1]; Wang, Qi[1]; Lu, Congrong[1]; Ren, Kuankuan[1]; Liu, Shiyan[1]; Li, Chunhe[1]; Dou, Wei-Dong[1]

机构：[1] Zhejiang Engineering Research Center of MEMS, School of Mathematical Information, Shaoxing University, Shaoxing, 312000, China

年份：2023

外文期刊名：Energy and Fuels

收录：EI(收录号：20233514662380)、Scopus(收录号：2-s2.0-85169166297)

语种：英文

外文关键词：Copper compounds - Heterojunctions - II-VI semiconductors - Light absorption - Molar ratio - Nanocomposites - Nanosheets - Nanowires - Optical properties - Photocatalytic activity - Photoluminescence

外文摘要：The development of photocatalysts with high charge separation efficiency and visible-light-harvesting capacity is still a great challenge. In this work, we report a simple hydrothermal treatment to decorate the CdS nanowires (NWs) with co-catalyst Cu2MoS4 nanosheets (NSs) for photocatalytic H2 evolution reaction (HER). Especially when the molar ratio of Cu2MoS4 to CdS is 3%, the Cu2MoS4/CdS shows excellent visible light-driven H2 evolution activity (1967.83 μmol g-1 h-1), which is 18.8 times higher than that of pure CdS. Structural characterizations demonstrate a well-designed structure of the Cu2MoS4/CdS, in which Cu2MoS4 NSs are tightly attached onto the CdS NWs to form a heterojunction. The optical property reveals that the 3%-Cu2MoS4/CdS nanocomposite displayed distinguished visible-light absorption capacity. Combined with the data analysis of the photoluminescence spectra, photocurrents, and electrochemical impedance spectra, it can be proved that there is effective separation of photogenerated electron-hole pairs in 3%-Cu2MoS4/CdS nanocomposite. All these factors synergistically boost the photocatalytic H2 evolution performance of the Cu2MoS4/CdS, providing a new concept for the rational design of highly efficient visible-light-driven sulfide photocatalysts. ? 2023 American Chemical Society.