Oxygen-deficient bismuth tungstate and bismuth oxide composite photoanode with improved photostability

Hoi Ying Chung; Weijian Chen; Xiaoming Wen; Judy N. Hart; Hao Wu; Yuekun Lai; Rose Amal; Yun Hau Ng

doi:10.1016/j.scib.2018.06.012

Oxygen-deficient bismuth tungstate and bismuth oxide composite photoanode with improved photostability

Hoi Ying Chung, Weijian Chen, Xiaoming Wen, Judy N. Hart, Hao Wu, Yuekun Lai, Rose Amal, Yun Hau Ng^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

A homogeneous layer of Bi₂O₃-Bi₁₄WO₂₄ composite (BWO/Bi₂O₃) thin film was fabricated using a combination of electrodeposition and thermal treatment. The evenly distributed Bi₁₄WO₂₄ component within the Bi₂O₃ layer was found to be important in stabilising the photoelectrochemical performances of Bi₂O₃ photoanode by promoting the photoelectron transport. The unmodified Bi₂O₃ suffered from severe photocorrosion as proven by X-ray diffraction (XRD) and inductively coupled plasma (ICP) analyses while the composite thin film was active without noticeable activity decay for at least 3 h of illumination. This strategy might be applicable to other photocatalysts with stability issues.

Original language	English (US)
Pages (from-to)	990-996
Number of pages	7
Journal	Science Bulletin
Volume	63
Issue number	15
DOIs	https://doi.org/10.1016/j.scib.2018.06.012
State	Published - Aug 15 2018

Keywords

Bismuth oxide
Bismuth tungstate
Photocorrosion

ASJC Scopus subject areas

General

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10.1016/j.scib.2018.06.012

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title = "Oxygen-deficient bismuth tungstate and bismuth oxide composite photoanode with improved photostability",

abstract = "A homogeneous layer of Bi2O3-Bi14WO24 composite (BWO/Bi2O3) thin film was fabricated using a combination of electrodeposition and thermal treatment. The evenly distributed Bi14WO24 component within the Bi2O3 layer was found to be important in stabilising the photoelectrochemical performances of Bi2O3 photoanode by promoting the photoelectron transport. The unmodified Bi2O3 suffered from severe photocorrosion as proven by X-ray diffraction (XRD) and inductively coupled plasma (ICP) analyses while the composite thin film was active without noticeable activity decay for at least 3 h of illumination. This strategy might be applicable to other photocatalysts with stability issues.",

keywords = "Bismuth oxide, Bismuth tungstate, Photocorrosion",

author = "Chung, {Hoi Ying} and Weijian Chen and Xiaoming Wen and Hart, {Judy N.} and Hao Wu and Yuekun Lai and Rose Amal and Ng, {Yun Hau}",

note = "Publisher Copyright: {\textcopyright} 2018 Science China Press",

year = "2018",

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doi = "10.1016/j.scib.2018.06.012",

language = "English (US)",

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T1 - Oxygen-deficient bismuth tungstate and bismuth oxide composite photoanode with improved photostability

AU - Chung, Hoi Ying

AU - Chen, Weijian

AU - Wen, Xiaoming

AU - Hart, Judy N.

AU - Wu, Hao

AU - Lai, Yuekun

AU - Amal, Rose

AU - Ng, Yun Hau

PY - 2018/8/15

Y1 - 2018/8/15

N2 - A homogeneous layer of Bi2O3-Bi14WO24 composite (BWO/Bi2O3) thin film was fabricated using a combination of electrodeposition and thermal treatment. The evenly distributed Bi14WO24 component within the Bi2O3 layer was found to be important in stabilising the photoelectrochemical performances of Bi2O3 photoanode by promoting the photoelectron transport. The unmodified Bi2O3 suffered from severe photocorrosion as proven by X-ray diffraction (XRD) and inductively coupled plasma (ICP) analyses while the composite thin film was active without noticeable activity decay for at least 3 h of illumination. This strategy might be applicable to other photocatalysts with stability issues.

AB - A homogeneous layer of Bi2O3-Bi14WO24 composite (BWO/Bi2O3) thin film was fabricated using a combination of electrodeposition and thermal treatment. The evenly distributed Bi14WO24 component within the Bi2O3 layer was found to be important in stabilising the photoelectrochemical performances of Bi2O3 photoanode by promoting the photoelectron transport. The unmodified Bi2O3 suffered from severe photocorrosion as proven by X-ray diffraction (XRD) and inductively coupled plasma (ICP) analyses while the composite thin film was active without noticeable activity decay for at least 3 h of illumination. This strategy might be applicable to other photocatalysts with stability issues.

KW - Bismuth oxide

KW - Bismuth tungstate

KW - Photocorrosion

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DO - 10.1016/j.scib.2018.06.012

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SN - 2095-9273

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EP - 996

JO - Science Bulletin

JF - Science Bulletin

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ER -

Oxygen-deficient bismuth tungstate and bismuth oxide composite photoanode with improved photostability

Abstract

Keywords

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