Metal sulfide-based Z-scheme heterojunctions in photocatalytic removal of contaminants, H2 evolution and CO2 reduction: current status and future perspectives

Deng, Fang, Peng, Junlong, Li, Xibao, Luo, Xubiao, Ganguly, Priyanka, Pillai, Suresh C., Ren, Bangxing, Lin, Ding and Dionysiou, Dionysios D. (2023) Metal sulfide-based Z-scheme heterojunctions in photocatalytic removal of contaminants, H2 evolution and CO2 reduction: current status and future perspectives. Journal of Cleaner Production, 416 (137957). pp. 1-19. ISSN 0959-6526

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Abstract / Description

Metal sulfides are promising photocatalysts in virtue of inherent photoelectric properties and wide light absorption range. However, metal sulfides are usually subjected to photocorrosion and high carrier recombination. The assembly of metal sulfide-based Z-scheme heterojunctions not only can overcome the above shortcomings of metal sulfides, but also maintain optimum redox performance. This review will provide an overview on the general properties of metal sulfides, three different types and synthesis methods of metal sulfide-based Z-scheme heterojunctions. Most importantly, the photocatalytic mechanism originating from the internal electric field was discussed from the Fermi level, direction of charge transfer and generation of reactive species. The applications of metal sulfide-based Z-scheme heterojunctions in decomposing organic contaminants, hydrogen (H2) evolution and carbon dioxide (CO2) reduction were also summed up. In the end, the challenges and outlooks of sulfide-based Z-scheme heterojunctions were presented.

Item Type:	Article
Additional Information:	© 2023. This manuscript version is made available under the CC-BY-NC-ND 4.0 license: https://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords:	Metal sulfide, Z-scheme photocatalytic system, Mechanism, Internal electric field, Potential application
Subjects:	500 Natural Sciences and Mathematics > 540 Chemistry & allied sciences 600 Technology > 660 Chemical engineering
Department:	School of Human Sciences
Depositing User:	Priyanka Ganguly
Date Deposited:	20 Sep 2023 08:55
Last Modified:	20 Sep 2023 08:55
URI:	https://repository.londonmet.ac.uk/id/eprint/8779

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