WO<sub>3</sub>/CuWO<sub>4</sub>复合薄膜的制备及光电化学性能

doi:10.11896/cldb.21070015

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Abstract WO₃/CuWO₄ composite films with three-dimensional structure were successfully prepared by a two-step hydrothermal method. The optimal preparation conditions for the WO₃/CuWO₄ composite films were obtained by adjusting the hydrothermal time of CuWO₄. The photoelectric performance parameters of WO₃/CuWO₄ composite films were obtained by absorption spectrum test, photocurrent test, photoelectrocatalysis test, and electrochemical impedance test. The results show that the band gap of WO₃/CuWO₄-5 h composite film was 2.44 eV between CuWO₄ and WO₃, which indicated a wider spectral response range. WO₃/CuWO₄-5 h composite film exhibited a high photocurrent density of 2.11 mA/cm² at 1.5 V vs. Ag/AgCl. The photoelectrocatalysis degradation efficiency of methylene blue solution by WO₃/CuWO₄-5 h composite film was 58.5%, which was higher than that of the pure WO₃ film (degradation efficiency was 41.4%). Electrochemical impedance spectroscopy showed that the charge transfer resistance of WO₃/CuWO₄ was less than that of pure WO₃ film, corresponding to better photoelectrochemical performance.

Key words： WO₃ CuWO₄ composite film photocurrent photoelectrocatalysis

Published: 25 February 2023 Online: 2023-03-02

CLC number:

O643

Fund:Natural Science Foundation of China (51502023, 11874091), Science and Technology Development Project of Jilin Province (20200201077JC, 20190701024GH, 20180201033GX, 20190302125GX), and Education Department of Jilin Province(JJKH20181103KJ, JJKH20190588KJ, JJKH20200777KJ).

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	YU Shurui
	YANG Jikai
	YANG Xue
	WANG Guozheng
	YIN Xiaoqian

Cite this article:

YU Shurui,YANG Jikai,YANG Xue, et al. Preparation and Photoelectrochemical Properties of WO₃/CuWO₄ Composite Film[J]. Materials Reports, 2023, 37(4): 21070015-6.

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http://www.mater-rep.com/EN/10.11896/cldb.21070015 OR http://www.mater-rep.com/EN/Y2023/V37/I4/21070015

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