Citation: Jun Xiong, Haoxue Huang, Bo Lin, Jiexiang Xia, Jun Di. Lower oxygen vacancy concentration in BiPO₄ with unexpected higher photocatalytic activity[J]. Chinese Chemical Letters, ;2023, 34(5): 107844. doi: 10.1016/j.cclet.2022.107844 shu

Lower oxygen vacancy concentration in BiPO₄ with unexpected higher photocatalytic activity

Jun Xiong ^{a, *,} ,
Haoxue Huang ^a ,
Bo Lin ^c ,
Jiexiang Xia ^a ,
Jun Di ^{b, *,}

a.
School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
b.
School of Chemistry and Chemical Engineering, National Special Superfine Powder Engineering Research Center, Nanjing University of Science and Technology, Nanjing 210094, China
c.
School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China

xiongjun@ujs.edu.cn

lydijun@163.com

Received Date: 29 June 2022
Revised Date: 5 September 2022
Accepted Date: 21 September 2022
Available Online: 24 September 2022

Figures(6)

Defect engineering has been demonstrated to be an appealing strategy to boost the photocatalytic activity of materials. However, can higher defect concentration bring about higher photocatalytic activity? This is an open question. In this work, BiPO₄ photocatalysts with controllable oxygen vacancy concentrations were successfully synthesized. The photocatalytic activity of the obtained BiPO₄ photocatalysts was determined by the removal of ciprofloxacin and 4-chlorophenol, as well as CO₂ photoreduction. The BiPO₄ materials with lower oxygen vacancy concentration could display unexpected higher photocatalytic efficiency. Through the investigation of different factors which may affect the photocatalytic performance, such as crystal structure, morphology, specific surface area, defect, and energy band structure, it can be found that the energy band structure difference was responsible for the enhanced photocatalytic activity.
- BiPO₄,
- Photocatalytic,
- Oxygen vacancy,
- Ciprofloxacin,
- Energy band structure
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沈阳化工大学材料科学与工程学院沈阳 110142

Lower oxygen vacancy concentration in BiPO4 with unexpected higher photocatalytic activity

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通讯作者: 陈斌, bchen63@163.com

Lower oxygen vacancy concentration in BiPO₄ with unexpected higher photocatalytic activity