Graphitic carbon nitride-based photocatalysts in the applications of environmental catalysis

Hongxing Dai , Hongxia Lin , Jinmo Wu , Fan Zhou , Xiaolong Zhao , Pengfei Lu , Guanghui Sun , Yuhan Song , Yayun Li , Xiaoyong Liu


Received July 14, 2021,Revised , Accepted November 13, 2021, Available online February 23, 2022

Volume 35,2023,Pages 570-590

Semiconductor photocatalytic technology has shown great prospects in converting solar energy into chemical energy to mitigate energy crisis and solve environmental pollution problems. The key issue is the development of high-efficiency photocatalysts. Various strategies in the state-of-the-art advancements, such as heterostructure construction, heteroatom doping, metal/single atom loading, and defect engineering, have been presented for the graphitic carbon nitride (g-C3N4)-based nanocomposite catalysts to design their surface chemical environments and internal electronic structures to make them more suitable for different photocatalytic applications. In this review, nanoarchitecture design, synthesis methods, photochemical properties, potential photocatalytic applications, and related reaction mechanisms of the modified high-efficiency carbon nitride-based photocatalysts were briefly summarized. The superior photocatalytic performance was identified to be associated with the enhanced visible-light response, fast photoinduced electron-hole separation, efficient charge migration, and increased unsaturated active sites. Moreover, the further advance of the visible-light harvesting and solar-to-energy conversions are proposed.

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