Citation: Ying‐Yuan HU, Rui LÜ, Wen‐Long ZHANG, Jian‐Xin LIU, Rui LI, Cai‐Mei FAN. One⁃Pot Electrochemical Preparation and Performance of BiOCl_0.5Br_0.5/BiPO₄ Double⁃Layer Heterojunction Thin Film Photocatalyst[J]. Chinese Journal of Inorganic Chemistry, ;2022, 38(8): 1577-1585. doi: 10.11862/CJIC.2022.153 shu

One⁃Pot Electrochemical Preparation and Performance of BiOCl_0.5Br_0.5/BiPO₄ Double⁃Layer Heterojunction Thin Film Photocatalyst

Ying‐Yuan HU ^{1, 2} ,
Rui LÜ ² ,
Wen‐Long ZHANG ^1,, ,
Jian‐Xin LIU ² ,
Rui LI ² ,
Cai‐Mei FAN ^2,,

1.
College of Chinese Medicine and Food Engineering, Shanxi University of Chinese Medicine, Jinzhong, Shanxi 030619, China
2.
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Corresponding author: Wen‐Long ZHANG, zhangwenlong0709@126.com Cai‐Mei FAN, 1084399972@qq.com
Received Date: 27 March 2022
Revised Date: 31 May 2022

Figures(11)

BiOCl_0.5Br_0.5/BiPO₄ double‐layer heterojunction thin film photocatalyst was successfully prepared on Bi plate by one‐pot electrochemical method. The crystal structure, elemental composition and valence, morphology and optical property were characterized. The as‐obtained double‐layer film consisted of BiOCl_0.5Br _0.5 solid solution layer at the bottom and BiPO₄ nanoparticles layer at the top. The interface internal electric field of BiOCl_0.5Br_0.5/BiPO₄ composite film led the photo‐induced electrons and holes to shift in the opposite direction, thus improving the photocatalytic performance of BiOCl_0.5Br_0.5/BiPO₄ composite film. The results displayed that the photodegradation efficiency of phenol reached 99.97% after 120 min under simulated sunlight irradiation, which was nearly 1.69 times and 1.20 times more than that of BiOCl/BiPO₄ and BiOBr/BiPO₄ composite films, respectively. Besides, the hole (h⁺) and hydroxyl radical (·OH) played a crucial role in the photodegradation process of phenol. The improved photocatalytic performance of BiOCl _0.5Br_0.5/BiPO₄ composite film can be ascribed to the broadened absorbance spectra range and efficient separation of photo‐induced charge carriers.
- solid solution,
- BiPO₄,
- heterojunction,
- thin film,
- electrochemical method,
- photocatalytic performance
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沈阳化工大学材料科学与工程学院沈阳 110142

One⁃Pot Electrochemical Preparation and Performance of BiOCl0.5Br0.5/BiPO4 Double⁃Layer Heterojunction Thin Film Photocatalyst

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通讯作者: 陈斌, bchen63@163.com

One⁃Pot Electrochemical Preparation and Performance of BiOCl_0.5Br_0.5/BiPO₄ Double⁃Layer Heterojunction Thin Film Photocatalyst