Hydrothermal Synthesis and Photocatalytic Activity of CuO/ZnO Composite Photocatalyst

doi:10.11901/1005.3093.2019.146

Chinese Journal of Materials Research

2019, Vol. 33

Issue (10): 728-734 DOI: 10.11901/1005.3093.2019.146

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Hydrothermal Synthesis and Photocatalytic Activity of CuO/ZnO Composite Photocatalyst

XIE Liang¹,WANG Ping¹,LI Zhifeng¹(

),LIU Dehong¹,WU Ying²

1. School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
2. Zhejiang NAVIION Technology Co. , Ltd, Hangzhou 310000, China

Cite this article:

XIE Liang,WANG Ping,LI Zhifeng,LIU Dehong,WU Ying. Hydrothermal Synthesis and Photocatalytic Activity of CuO/ZnO Composite Photocatalyst. Chinese Journal of Materials Research, 2019, 33(10): 728-734.

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Abstract

Nanocomposites of CuO/ZnO were synthesized with cetyltrimethylammonium bromide as a growth regulator by one-step hydrothermal method. The catalyst was characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), fluorescence spectrometer (FL) and UV-Vis spectrometer (UV-Vis). The photocatalytic effect of the composite photocatalyst with different ratios of CuO to ZnO on the degradation efficiency of methyl orange under ultraviolet light irradiation, and the cyclic stability of the composite photocatalyst were investigated. The results show that CuO/ZnO photocatalysts are mainly composed of CuO nanoparticles and ZnO nanosheets. The proper amount of CuO can effectively adjust the light absorption performance of ZnO and enhance the efficiency of ultraviolet photocatalysis. Excess CuO (?7%) has inhibitory effect on ZnO ultraviolet catalytic efficiency. CuO/ZnO has good stability in the photocatalytic process.

Key words: composites CuO/ZnO photocatalysis methyl orange

Received: 11 March 2019

ZTFLH:

O644

Fund: National Natural Science Foundation of China(53173104);Jiangxi Science and Technology Project(20141BBE50019);Jiangxi Provincial Department of Education Project(GJJ160602)

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	Liang XIE
	Ping WANG
	Zhifeng LI
	Dehong LIU
	Ying WU

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https://www.cjmr.org/EN/10.11901/1005.3093.2019.146 OR https://www.cjmr.org/EN/Y2019/V33/I10/728

Fig.1 XRD patterns of pure ZnO, CuO/ZnOand pure CuO powers

Fig.2 SEM images of 5%CuO/ZnO (a, b) and corresponding EDS elemental mapping images (c, d)

Fig.3 Blank experiment and Degradation profiles of MO with different photocatalysts under UV light irradiation (a). The corresponding kinetic linear fitting curves (b)

Fig.4 UV-vis absorption spectra of CuO, ZnO and CuO/ZnO (a). plots of the (αhν)² vs photon energy (hν) for ZnO and CuO/ZnO (b)

Fig.5 Cycling photodegradation experiments for the 5%CuO/ZnO

Fig.6 Photoluminescence spectra of pure ZnO and 5%CuO/ZnO

Fig.7 Complete XPS spectra of 5%CuO/ZnO (a). High-resolution XPS spectra of: (b) Zn 2p, (c) Cu 2p, and (d) O 1s for CuO/ZnO composite, and CuO

Fig.8 Photocatalytic mechanism diagram of CuO/ZnO composite photocatalyst

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