Research Progress of g-C3N4-Based Heterojunctions in Photocatalytic Applications

Abstract

Abstract: Semiconductor heterojunction photocatalysts have attracted much attention because of their great application prospects in solar energy utilization and conversion. Rational construction of heterostructure with two or more semiconductor materials can combine the advantages of multi-components to simultaneously improve the photo-induced charges separation, expand the visible light absorption range, and maintain the high redox capacity of photocatalysts. Recently, constructing of g-C₃N₄-based heterostructure has become a hot research topic due to the multiple merits of g-C₃N₄, such as facile synthesis, high stability, unique optical and electrical characteristics. This review focuses on the recent research on the modification of g-C₃N₄-based heterojunction photocatalysts and reviews three heterojunction structures (g-C₃N₄-based type-Ⅱ heterojunction, g-C₃N₄-based Z-scheme heterojunction and g-C₃N₄-based type of S-scheme heterojunction) according to the different charge transfer paths of g-C₃N₄ and other semiconductors, and their applications in environmental restoration and energy. Finally, the existing problems of g-C₃N₄-based heterojunction photocatalysts are summarized and prospected.

Key words: g-C₃N₄, heterojunction, photocatalysis, photocarrier, bismuth-based semiconductor, degradation

CLC Number:

YANG Siqi, ZHENG Yongjie, ZHANG Hongrui, ZHAO Yunpeng, TIAN Jingzhi. Research Progress of g-C₃N₄-Based Heterojunctions in Photocatalytic Applications[J]. Journal of Synthetic Crystals, 2022, 51(6): 1110-1121.

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Research Progress of g-C₃N₄-Based Heterojunctions in Photocatalytic Applications

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