MWCNT/Bi<sub>2</sub>WO<sub>6</sub>复合光催化剂的制备及其活性研究

doi:10.11896/cldb.201902002

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Abstract The MWCNT/Bi₂WO₆ composite photocatalysts with high photocatalytic activity were successfully synthesized from multiwalled carbon nanotubes and Bi₂WO₆ via hydrothermal method. The structures and morphology of the samples were characterized by XRD, SEM, TEM, XPS, BET and UV-Vis. The photocatalytic performance of the catalyst was investigated by taking Rhodamine B as the target pollutant. The results indicated that the obtained composite presented orthorhombic crystal structure, the MWCNTs alternately attached to the lamella structure of Bi₂WO₆ to form the composite. The synthesized MWCNT/Bi₂WO₆ possessed large specific surface area and narrow band gap, which could effectively inhibit the recombination of photogenerated electrons and holes, increase the quantum transfer efficiency and was more likely to be excited by light. The MWCNT/Bi₂WO₆ photocatalysts exhibited the best catalytic performance with the loading amount of 2%. Under the simulated sunlight test, the photodegradation efficiency of MWCNT/Bi₂WO₆ to 10 mg/L Rhodamine B could reach as high as 98.8%.

Key words： photocatalysis composite multi-walled carbon nanotubes Bi₂WO₆

Published: 31 January 2019

CLC number:

O643

Fund:The work was financially supported by the National Natural Science Foundation of China (51202294)and the Fundamental Research Funds for the Central Universities (18CX02123A).

About author:: Yongqiang Wang received his PhD. Degree in environmental engineering from Harbin Institute of Techno-logy in 2007. He is currently an associate professor in China University of Petroleum (East China) and parti-cipates in research on environmental catalytic and the energy conservation of petrochemical enterprise.

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	WANG Yongqiang
	CHEN Xi
	LIU Xin
	LIU Fang
	ZHAO Chaocheng
	JIANG Shan
	WU Pengwei

Cite this article:

WANG Yongqiang,CHEN Xi,LIU Xin, et al. Synthesis of MWCNT/Bi₂WO₆ Composite Photocatalyst and Its
Photocatalytic Activity[J]. Materials Reports, 2019, 33(2): 211-214.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.201902002 OR http://www.mater-rep.com/EN/Y2019/V33/I2/211

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