CuMnO<sub>2</sub>/TiO<sub>2</sub>复合光催化剂增效催化降解亚甲基蓝

doi:10.11896/cldb.18040257

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Abstract Aseries of p-type CuMnO₂/n-type TiO₂ heterostructure photocatalysts with enhanced photocatalytic activity were fabricated by spin coating CuMnO₂ nanocrystals on TiO₂ nanorod-array film for the first time. Then, the photocatalytic activity of the obtained CuMnO₂/TiO₂ for degradation of methylene blue (MB) aqueous solution was investigated. It could be found from the results that the prepared CuMnO₂/TiO₂ composite showed superior photocatalytic activity to pure TiO₂. The excellent photocatalytic activity of CuMnO₂/TiO₂ could be ascribed to the formation of p-n heterojunctions between CuMnO₂nanocrystals and TiO₂ nanorods, which ensured the effective separation of photogenerated electrons and holes in CuMnO₂/TiO₂. In particularly, the CuMnO₂/TiO₂ with best degradation performance was prepared from 0.25 g/L CuMnO₂, showing the photocatalytic efficiency and apparent rate of 88% and 0.298 6 h^-1, which were 26% and 80% higher than that of pure TiO₂, respectively.

Key words： CuMnO₂ nanocrystals heterostructure photocatalyst methylene blue

Published: 28 April 2019

CLC number:

TM23

Fund:This work was financially supported by the National Natural Science Foundation of China (51402223), Fundamental Research Funds for the Central Universities (WUT:2018IVA012).

About author:: Dehua Xiong is currently a professor at State Key Laboratory of Silicate Materials for Architectures in Wuhan University of Technology.

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	XIONG Dehua
	DENG Yanwen
	DU Zijuan
	ZHANG Qingqing
	LI Hong

Cite this article:

XIONG Dehua,DENG Yanwen,DU Zijuan, et al. CuMnO₂/TiO₂ Composite Photocatalyst with Synergistic Photocatalytic Activity Used for Methylene Blue Degradation[J]. Materials Reports, 2019, 33(8): 1262-1267.

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http://www.mater-rep.com/EN/10.11896/cldb.18040257 OR http://www.mater-rep.com/EN/Y2019/V33/I8/1262

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