期刊
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
卷 97, 期 7, 页码 1813-1821出版社
WILEY
DOI: 10.1002/jctb.7054
关键词
photocatalysis; dyes; WSe2; In2S3; degradation; heterostructure
类别
资金
- National Natural Science Foundation of China [51908252, 21906072]
- Natural Science Foundation of Jiangsu Province [BK20190982]
- Postdoctoral Science Foundation of China [2019M652274]
- Social Development Project of Zhenjiang [2016014]
- Qing Lan Project for Young Core Teachers in University of Jiangsu Province
WSe2/In2S3 photocatalysts prepared via a hydrothermal method exhibit favorable photocatalytic activity and stability under visible light.
BACKGROUND The construction of a heterojunction is an effective strategy to enhance the activity of a photocatalyst. RESULTS WSe2/In2S3 photocatalysts with favorable photostability and reusability were prepared via a hydrothermal method. The structural and morphological features of WSe2/In2S3 were investigated using scanning electron microscopy and transmission electron microscopy. Photocatalytic performance of WSe2/In2S3 was tested by the degradation of methylene blue (MB) under visible light. The optimal degradation rate of MB by WSe2/In2S3 reached 92% within 120 min. After eight regeneration cycles, the degradation of WSe2/In2S3 still reached 70% and exhibited good photocatalytic stability. CONCLUSION The enhanced photocatalytic activity is attributed to the formation of heterostructure of WSe2/In2S3, which could effectively separate the photogenerated e(-)-h(+) pairs. Meanwhile, the photocatalytic degradation intermediates of MB by WSe2/In2S3 heterostructure was investigated by liquid chromatography-mass spectrometry. The results show that the obtained WSe2/In2S3 photocatalyst has a promising practical application. (c) 2022 Society of Chemical Industry (SCI).
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