g-C3N4基异质结的光催化应用研究进展

摘要/Abstract

摘要： 半导体异质结光催化剂因其在太阳能利用和转化方面广阔的应用前景而备受关注。合理构建两种或两种以上半导体材料的异质结构,可以集成多种组分的优点,改善光生电荷分离,扩大对可见光的吸收范围,保持光催化剂的高氧化还原能力。近年来,由于g-C₃N₄具有合成简单、稳定性高、独特的光学和电学特性等诸多优点,g-C₃N₄基异质结构的构建成为研究热点。本文针对近年来g-C₃N₄基异质结改性的研究现状,依据g-C₃N₄与其他半导体电荷转移路径的不同综述了三种异质结结构(g-C₃N₄基Ⅱ型异质结、g-C₃N₄基Z型异质结和g-C₃N₄基S型异质结),以及其在环境修复和能源方面的应用。最后对g-C₃N₄基异质结光催化剂存在的问题进行总结和展望。

关键词: g-C₃N₄, 异质结, 光催化, 光生载流子, 铋基半导体, 降解

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

中图分类号:

杨思琪, 郑永杰, 张宏瑞, 赵云鹏, 田景芝. g-C₃N₄基异质结的光催化应用研究进展[J]. 人工晶体学报, 2022, 51(6): 1110-1121.

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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g-C₃N₄基异质结的光催化应用研究进展

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

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