S vacant CuIn5S8 confined in a few-layer MoSe2 with interlayer-expanded hollow heterostructures boost photocatalytic CO2 reduction

被引：48

作者：

Chen, Li-Juan ^{[1
]}

Liu, Ting-Ting ^{[1
]}

Liu, Shu-Ming ^{[1
]}

Cai, Sheng ^{[1
]}

Zou, Xiao-Xiao ^{[1
]}

Jiang, Jing-Wen ^{[1
]}

Mei, Zhi-Yuan ^{[1
]}

Zhao, Gen-Fu ^{[1
]}

Yang, Xiao-Fei ^{[2
]}

Guo, Hong ^{[1
]}

机构：

[1] Yunnan Univ, Sch Mat & Energy, Kunming 650091, Yunnan, Peoples R China

[2] Western Univ, Nanomat & Energy Lab, Dept Mech & Mat Engn, London, ON N6A 5B9, Canada

来源：

RARE METALS | 2022年 / 41卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Sulfur vacancy; CuIn5S8; MoSe2; heterojunction; Photocatalytic CO2 reduction; GRAPHITIC CARBON NITRIDE; HYDROGEN EVOLUTION; ZNIN2S4; MONOLAYER; DEGRADATION;

D O I：

10.1007/s12598-021-01809-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The conversion of CO2 into CO, CH4 and other hydrocarbons through solar energy can alleviate the energy shortage problem. We design a novel photocatalyst with S defects CuIn5S8@MoSe2 hollow structure. The interlayer-expanded MoSe2 can increase the adsorption of intermediates. The unique hollow structure can improve the light utilization efficiency and the electron-holes separation. CuIn5S8 with S vacancies in bimetallic sites has high selectivity and photocatalytic reduction of CO2 activity. Therefore, S vacant CuIn5S8 confined in a few-layers MoSe2 with interlayer-expanded hollow heterostructures exhibit super performance for photocatalytic CO2 reduction. After 8-h light reaction, the outputs of CO and CH4 for the 15.3 wt% CuIn5S8@MoSe2 sample containing S vacancies (V-s) are 30.4 and 14.7 mu mol center dot g(-1), respectively. The mechanism is also investigated in detail through in situ Fourier transform infrared spectroscopy technology.

引用

页码：144 / 154

页数：11

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