Citation: Li-ye ZHAO, Ru-shun AN, Xin SHI, Guo-bo CHEN, Liang WANG, Chun-hu LI. The effect of Bi content on the photocatalytic performance of bismuth oxybromides[J]. Journal of Fuel Chemistry and Technology, ;2022, 50(2): 250-256. doi: 10.1016/S1872-5813(21)60144-5 shu

The effect of Bi content on the photocatalytic performance of bismuth oxybromides

Li-ye ZHAO ^{1, #,} ,
Ru-shun AN ^{1, #} ,
Xin SHI ² ,
Guo-bo CHEN ^1,, ,
Liang WANG ^1,, ,
Chun-hu LI ¹

1.
College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
2.
Sinopec Northwest Oilfield Branch, Xinjiang 830011, China

Corresponding author: Guo-bo CHEN, chenguobo@ouc.edu.cn Liang WANG, wangliang_good@163. com
Received Date: 14 May 2021
Revised Date: 21 June 2021

Figures(11)

BiOBr, Bi₃O₄Br and Bi₄O₅Br₂ were prepared by hydrothermal and solvothermal methods. Their structural composition, surface morphology, chemical states and optical properties were characterized by XRD, SEM, XPS and UV-vis. The band structure and density of states of the photocatalysts were calculated by density functional theory (DFT). The photocatalytic activity was evaluated by degradation of RhB. The results show that band gap and the position of conduction band is affected by Bi content. The Bi₄O₅Br₂ photocatalyst can completely degrade RhB in 50 min. Radical-trapping experiments proves that ·\begin{document}$ {\rm{O}}_2^- $\end{document} is the main active species in photocatalytic degradation of RhB.
- BiOBr,
- Bi content,
- DFT,
- photocatalytic performance
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