Citation: XU Li-Mei, HUANG Hua-Bin, SHEN Jin-Hai, YOU Qi-Hua. Synthesis of Zn-Doped BiOBr with Enhanced Photoreduction CO₂ Activity under Visible Light Irradiation[J]. Chinese Journal of Inorganic Chemistry, ;2020, 36(12): 2395-2403. doi: 10.11862/CJIC.2020.262 shu

Synthesis of Zn-Doped BiOBr with Enhanced Photoreduction CO₂ Activity under Visible Light Irradiation

College of Environment and Public Health, Xiamen Huaxia University, Xiamen, Fujian 361024, China

Corresponding author: XU Li-Mei, xlm@hxxy.edu.cn
Received Date: 6 June 2020
Revised Date: 17 September 2020

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The bismuth oxybromide (BiOBr) semiconductor has been used in photocatalytic CO₂ reduction for a long time, but the catalytic activity remains low. Herein, the Zn-doped BiOBr photocatalysts (called Zn-BiOBr) was synthesized by a simple hydrothermal method, which put out higher catalytic activity than pure BiOBr under visible light. The results showed that the synthesized 2% Zn-BiOBr exhibited the highest photocatalytic rate of 8.49 μmol·h^-1, which was 13 times higher than pure BiOBr. The enhancement mechanism of photocatalytic activity was also studied. Under visible light, Zn-BiOBr catalyst is excited and creates photo-induced electrons and holes, which effectively improve the conversion of CO₂ into CO. Doping of zinc provides BiOBr with a more suitable band gap and energy band defects, facilitates the separation of photogenerated charges, and reduces the recombination rate of photogenerated electrons, all of which contribute to the CO₂ conversion efficiency.
- Zn-doped BiOBr,
- semiconductors,
- photocatalyst,
- CO₂ reduction,
- visible light,
- energy storage and conversion
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沈阳化工大学材料科学与工程学院沈阳 110142

Synthesis of Zn-Doped BiOBr with Enhanced Photoreduction CO2 Activity under Visible Light Irradiation

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通讯作者: 陈斌, bchen63@163.com

Synthesis of Zn-Doped BiOBr with Enhanced Photoreduction CO₂ Activity under Visible Light Irradiation