Synthesis of ZnIn2S4@Co3S4 particles derived from ZIF-67 for photocatalytic hydrogen production

In this work, ZIF-67 derivative Co3S4 with diamond dodecahedron structure was firstly synthesized via a series of reactions, and ZnIn2S4@Co3S4 heterostructures with adjustable band gaps were successfully obtained through a simple hydrothermal method. Consequently, ZnIn2S4@Co3S4 heterostructures have...

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Bibliographic Details
Published in:RSC advances 2021-03, Vol.11 (16), p.9296-9302
Main Authors: Wang, Ganyu, Chen, Wenqian, Zhang, Yu, Xu, Qinshang, Li, Yirui, Maw Lin Foo, Tang, Liang
Format: Article
Language:English
Subjects:
Catalytic activity
Chemistry
Cobalt sulfide
Diamonds
Electromagnetic absorption
Electron transfer
Heterostructures
Hydrogen production
Photocatalysis
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Summary:In this work, ZIF-67 derivative Co3S4 with diamond dodecahedron structure was firstly synthesized via a series of reactions, and ZnIn2S4@Co3S4 heterostructures with adjustable band gaps were successfully obtained through a simple hydrothermal method. Consequently, ZnIn2S4@Co3S4 heterostructures have significantly enhanced visible light absorption and improved photocatalytic efficiency, among which the ZC-5 composite exhibits the highest photocatalytic hydrogen production rate up to 4261 μmol g−1 h−1 under simulated sunlight, to be approximately 4.8 times higher than that of pure ZnIn2S4. The enhanced photocatalytic activity can be attributed to faster electron transfer and more efficient electron–hole pairs separation derived from the heterostructures which form at the interface between Co3S4 and ZnIn2S4. Thus, this study provides a good strategy for photocatalytic hydrogen production without precious metals using heterostructures.
ISSN:2046-2069
DOI:10.1039/d0ra10799a