Preparation and photoelectrochemical properties of WO3/Bi2MoO6 composite films

LI Siyuan; YANG Jikai; XIAO Nan

doi:10.13801/j.cnki.fhclxb.20210706.001

Volume 39 Issue 6

Jun. 2022

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LI Siyuan, YANG Jikai, XIAO Nan. Preparation and photoelectrochemical properties of WO3/Bi2MoO6 composite films[J]. Acta Materiae Compositae Sinica, 2022, 39(6): 2734-2741. doi: 10.13801/j.cnki.fhclxb.20210706.001

Citation:

LI Siyuan, YANG Jikai, XIAO Nan. Preparation and photoelectrochemical properties of WO₃/Bi₂MoO₆ composite films[J]. Acta Materiae Compositae Sinica, 2022, 39(6): 2734-2741. doi: 10.13801/j.cnki.fhclxb.20210706.001

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Preparation and photoelectrochemical properties of WO₃/Bi₂MoO₆ composite films

doi: 10.13801/j.cnki.fhclxb.20210706.001

College of Science, Changchun University of Technology, Changchun 130000, China

Received Date: 2021-05-11
Accepted Date: 2021-06-29
Rev Recd Date: 2021-06-21

Available Online: 2021-07-06

Publish Date: 2022-06-01

Abstract

Abstract

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.
- WO₃,
- Bi₂MoO₆,
- laminated film,
- photoelectrochemistry,
- photoelectrocatalysis,
- photocurrent
Long Abstrsct
Innovation Points

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References(28)

References

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