Cu2O/g-C3N4异质结光催化材料的研究进展

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Abstract Photocatalysis is an environmentally-friendly technology that can effectively solve the problems of environmental pollution and energy shor-tage, and has wide application prospects. Its basic principle is that semiconductor catalysts are stimulated under light irradiation to produce many active species with strong redox ability, which can be used for pollutant degradation, hydrogen production, and chemical synthesis. The n-type semiconductor graphite-like phase carbon nitride (g-C₃N₄) has the characteristics of stable and porous structure, and good visible-light response. It is widely used in the field of photocatalysis. The p-type semiconductor cuprous oxide (Cu₂O) has the characteristics of high conductivity and high crystal surface activity, and its energy band position and gap can meet the requirements of photocatalytic hydrolysis to produce hydrogen. However, due to the limitation of the material's own physicochemical properties, the pure g-C₃N₄ or Cu₂O does not exhibit high catalytic performance. The combination of Cu₂O and g-C₃N₄ to form a heterojunction can effectively improve the separation efficiency of photogenerated car-riers and the utilization efficiency of visible light, thereby improving the photocatalytic performance. In this review, the research on Cu₂O/g-C₃N₄ heterojunction photocatalytic materials is summarized, and the formation mechanism and synthesis strategies of heterojunction are reviewed, and the applications of Cu₂O/g-C₃N₄ heterojunction for photocatalytic degradation of pollutants, antisepsis, hydrogen production, CO₂ reduction, and organic synthesis are discussed, and finally future research directions are prospected.

Key words： copper(I) oxide/graphitic carbon nitride heterojunction photocatalytic performance

Published: 16 July 2021

CLC number:

O643

Fund:National Natural Science Foundation of China (51572074), Open Project of Key Laboratory of Green Light Industry Materials of Hubei Province (201907B09, 201710A12).

About author:: Jianfei Zheng graduated from Guangdong University of Technology in June 2019 with a bachelor's degree in environmental engineering. He is currently a graduate student in the School of Materials and Chemical Engineering of Hubei University of Technology. He is under the supervision of professor Longhui Nie. At present, his research is focused on photocatalysis for degrading organic pollutants.Longhui Nie received his B.S. degree in food science and technology and Ph.D. degree in applied chemistry from Nanchang University and Dalian University of Technology, respectively. After two-year postdoctoral research at Wuhan University of Technology and one-year visiting scholar in Kansas University in USA, he is currently a professor in Hubei University of Technology. His current research interests include semiconductor photocatalysis, indoors air purification and so on.

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	ZHENG Jianfei
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Cite this article:

ZHENG Jianfei,ZHU Silong,NIE Longhui. Progress of Cu₂O/g-C₃N₄ Heterojunction Photocatalytic Materials[J]. Materials Reports, 2021, 35(Z1): 33-41.

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http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2021/V35/IZ1/33

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