Hierarchical MoO2/ZnIn2S4 Schottky Heterojunction Stimulated Photocatalytic H2 Evolution under Visible Light
Source abstract
Abstract
A Schottky junction is an ideal candidate for photocatalytic H2 evolution since the photo-induced charge kinetics of semiconductors can be harnessed via coupling with metals. In this work, the ZnIn2S4 semiconductor and metallic MoO2 are successfully integrated to form a composite photocatalyst, which is analogous to the conventional metal–semiconductor Schottky junction. In such a heterojunction, hierarchical ZnIn2S4 flower-like structures are in situ grown on MoO2 nanosheets. The experimental and computational results suggest that the Schottky barrier successfully suppresses the recombination of photocarriers, while MoO2 further extends the spectral range of light absorption and decreases the activation energy of H2 evolution. As a result, the optimal MoO2/ZnIn2S4 composite exhibits a 28.2 times higher H2 evolution rate (3730.5 μmol/g/h) than pristine ZnIn2S4 under visible light.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Nanocluster Synthesis and Applications · Advanced Nanomaterials in Catalysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute for Composites Science Innovation (InCSI), State Key Laboratory of Silicon Material, School of Materials Science and Engineering, Zhejiang University, Hangzhou310027, China
Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health, Institution of Environmental Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou310058, China
School of Materials Science and Physics, China University of Mining and Technology, Xuzhou221116, China
Funding
National Natural Science Foundation of China · Natural Science Foundation of Zhejiang Province · Key national defense discipline laboratory of new Micro-Nano device and system technology, Chongqing University
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