Effect of halogen atoms on photocatalytic activity of bismuth oxyhalide (BIO<i>X</i>, <i>X</i> = Cl, Br, I)

ZHAO Li-ye; LI Heng; WANG Liang; LI Chun-hu

doi:10.19906/j.cnki.JFCT.2021067

Volume 50 Issue 1

Jan. 2022

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Article Navigation > Journal of Fuel Chemistry and Technology > 2022 > 50(1): 122-128

ZHAO Li-ye, LI Heng, WANG Liang, LI Chun-hu. Effect of halogen atoms on photocatalytic activity of bismuth oxyhalide (BIOX, X = Cl, Br, I)[J]. Journal of Fuel Chemistry and Technology, 2022, 50(1): 122-128. doi: 10.19906/j.cnki.JFCT.2021067

Citation:

ZHAO Li-ye, LI Heng, WANG Liang, LI Chun-hu. Effect of halogen atoms on photocatalytic activity of bismuth oxyhalide (BIOX, X = Cl, Br, I)[J]. Journal of Fuel Chemistry and Technology, 2022, 50(1): 122-128. doi: 10.19906/j.cnki.JFCT.2021067

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Effect of halogen atoms on photocatalytic activity of bismuth oxyhalide (BIOX, X = Cl, Br, I)

doi: 10.19906/j.cnki.JFCT.2021067

College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China

Received Date: 2021-04-28
Rev Recd Date: 2021-06-21

Available Online: 2021-07-16

Publish Date: 2022-01-25

Abstract

Abstract

BiOCl, BiOBr and BiOI were prepared by hydrothermal and solvothermal methods. XRD, SEM, photocurrent density curve and UV-vis were used to characterize the crystal structure, surface morphology and photoelectric properties. The band structure and density of states of BiOX were calculated by DFT. With the atomic number of halogen increase, the dispersion of the Fermi level near the semiconductor conduction band decreases, and the band gap becomes smaller. The photocatalytic activity of BiOCl, BiOBr and BiOI was evaluated by photocatalytic degradation of Rhodamine B (RhB), and the degradation rate of RhB in 60 min for BiOI could reach 100%. Meanwhile, the main active groups in the process of photocatalytic degradation of RhB were explored by radical trapping experiment.
- BiOX,
- halogen atom,
- photocatalysis,
- photocatalytic performance

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References(13)

References

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