Direct Z-scheme CuInS2/Bi2MoO6 heterostructure for enhanced photocatalytic degradation of tetracycline under visible light

The construction of direct Z-scheme heterojunctions with high photocatalytic degradation ability is a theme of importance in both environmental and materials sciences, but still retains many unresolved challenges. In this article, we report the construction of Z-scheme CuInS2/Bi2MoO6 heterostructure...

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Bibliographic Details
Published in:Journal of hazardous materials 2021-08, Vol.415, p.125591-125591, Article 125591
Main Authors: Guo, Jingru, Wang, Liping, Wei, Xiao, Alothman, Zeid A., Albaqami, Munirah D., Malgras, Victor, Yamauchi, Yusuke, Kang, Yunqing, Wang, Meiqi, Guan, Weisheng, Xu, Xingtao
Format: Article
Language:English
Subjects:
CuInS2/Bi2MoO6
Direct Z-scheme heterojunction
Photocatalysts
Tetracycline degradation
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Summary:The construction of direct Z-scheme heterojunctions with high photocatalytic degradation ability is a theme of importance in both environmental and materials sciences, but still retains many unresolved challenges. In this article, we report the construction of Z-scheme CuInS2/Bi2MoO6 heterostructure by in-situ hydrothermal reactions, demonstrating superior photocatalytic activity towards the degradation of tetracycline under visible light, compared to their individual components: that is to say 8 and 2.5 times those of CuInS2 and Bi2MoO6, respectively. The photocatalytic performance of CuInS2/Bi2MoO6 heterostructure is mainly ascribed to the effective charge transfer at the interface through the construction of a direct Z-scheme heterojunction, combined with a ternary sulfide semiconductor absorbing light in the useful region of the solar spectrum. This photocatalyst provides new insights on the fundamental aspects governing the mechanisms responsible for multicomponent photodegradation, while constituting already a promising candidate for practical environmental applications. [Display omitted] •CuInS2/Bi2MoO6 heterostructure was synthesized via a hydrothermal reaction.•A Z-scheme heterojunction was formed as expected.•CuInS2/Bi2MoO6 heterostructure exhibited high photocatalytic activity for degrading tetracycline.
ISSN:0304-3894
1873-3336
DOI:10.1016/j.jhazmat.2021.125591