Metal Sulfide S‐Scheme Homojunction for Photocatalytic Selective Phenylcarbinol Oxidation

Author:

Zhang Huijun1,Gao Yujie2,Meng Sugang134,Wang Zengrong3,Wang Peixian4,Wang Zhongliao1,Qiu Chengwei5,Chen Shifu1,Weng Bo267ORCID,Zheng Yu‐Ming67

Affiliation:

1. Key Laboratory of Green and Precise Synthetic Chemistry and Applications Ministry of Education College of Chemistry and Materials Science Huaibei Normal University Huaibei 235000 P. R. China

2. cMACS Department of Microbial and Molecular Systems KU Leuven Celestijnenlaan 200F Leuven 3001 Belgium

3. High Field Magnetic Laboratory Hefei Institutes of Physical Science Chinese Academy of Sciences Hefei 230031 P. R. China

4. School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering Shihezi University Shihezi 832003 P. R. China

5. State Key Lab of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350116 P. R. China

6. CAS Key Laboratory of Urban Pollutant Conversion Institute of Urban Environment, Chinese Academy of Sciences 1799 Jimei Road Xiamen 361021 P. R. China

7. University of Chinese Academy of Sciences 19A Yuquan Road Beijing 100049 P. R. China

Abstract

AbstractMetal sulfide‐based homojunction photocatalysts are extensively explored with improved photocatalytic performance. However, the construction of metal sulfide‐based S‐scheme homojunction remains a challenge. Herein, the fabrication of 2D CdIn2S4 nanosheets coated 3D CdIn2S4 octahedra (referred to as 2D/3D n‐CIS/o‐CIS) S‐scheme homojunction photocatalyst is reported by simply adjustment of polyvinyl pyrrolidone amount during the solvothermal synthesis. The formation of S‐scheme homojunction within n‐CIS/o‐CIS is systematically investigated via a series of characterizations, which can generate an internal electric field to facilitate the separation and migration of photogenerated electron‐hole pairs. The 2D/3D n‐CIS/o‐CIS composite exhibits significantly improved photocatalytic activity and stability in the selective oxidation of phenylcarbinol (PhCH2OH) to benzaldehyde (PhCHO) when compared to pure n‐CIS and o‐CIS samples under visible light irradiation. It is hoped that this work can contribute novel insights into the development of metal sulfides S‐scheme homojunction photocatalysts for solar energy conversion.

Funder

National Natural Science Foundation of China

Publisher

Wiley

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