Preparation and photoelectrochemical properties of WO3/Bi2MoO6 composite films

被引：0

作者：

Li S. ^{[1
]}

Yang J. ^{[1
]}

Xiao N. ^{[1
]}

机构：

[1] College of Science, Changchun University of Technology, Changchun

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2022年 / 39卷 / 06期

关键词：

Bi[!sub]2[!/sub]MoO[!sub]6[!/sub; Laminated film; Photocurrent; Photoelectrocatalysis; Photoelectrochemistry; WO[!sub]3[!/sub;

D O I：

10.13801/j.cnki.fhclxb.20210706.001

中图分类号：

学科分类号：

摘要：

The application of WO3 materials has been attracted much attention in photoelectric catalysis, but its poor photo-generated electron hole separation ability and low utilization rate of sunlight have limited its photoelectric catalytic property. To solve this problem, WO3 nano-films were prepared on the conductive glass (FTO) by hydrothermal method, and WO3/Bi2MoO6 composite films with different reaction time (7 h, 9 h and 11 h) were synthesized on WO3 nano-films by solvothermal method. XRD and SEM tests proved the successful preparation of WO3/Bi2MoO6 composite films. The WO3/Bi2MoO6 composite film samples were subjected to absorption spectrum test, photocurrent test, photoelectric catalytic test and alternating current impedance test. The results show that the WO3/Bi2MoO6 composite film samples have better light absorption characteristics, more outstanding photocurrent characteristics and significantly improved photoelectrocatalysis activity compared with pure WO3 nano-films. And the WO3/Bi2MoO6 composite film samples with the hydrothermal reaction for 9 h have the highest photocurrent density and the best photoelectrocatalysis efficiency. The analysis suggests that the WO3/Bi2MoO6 composite film may constitute a heterojunction structure, which reduces the electronic impedance inside the composite film and increases the effective photoelectrochemical reaction sites; Meanwhile, the response range of the spectrum is expanded by increasing the utilization rate of sunlight. So the photoelectrochemical property can be significantly improved. Copyright ©2022 Acta Materiae Compositae Sinica. All rights reserved.

引用

页码：2734 / 2741

页数：7

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