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[Performance and Mechanism Study of Visible Light-driven C3N4/BiOBr Composite Photocatalyst].
Huan Jing Ke Xue. 2017 May 08; 38(5):2182-2190.HJ

Abstract

Efficient visible light-driven C3N4/BiOBr composite photocatalysts were prepared via a facile hydrothermal method and characterized by X-ray diffraction, Fourier transform infrared, scanning electron microscopy, UV-Vis diffuse reflectance spectra and photoluminescence spectra for the phase composition and optical property. Taking rhodamine B (RhB) as the target pollutant, the photocatalytic activity and stability of photocatalysts were studied under visible light irradiation. Furthermore, the mechanism in the process of photocatalytic degradation was discussed by electron spin resonance spectroscopy analysis and the trapping experiment of generated radicals. The results indicated that C3N4/BiOBr composite photocatalysts had excellent crystallization performance. Composited by C3N4, BiOBr exhibited considerably higher photocatalytic activity by reducing the rate of electron-hole recombination. Among prepared composites with various C3N4 contents, 15% C3N4/BiOBr exhibited the best efficiency for the degradation of RhB. After irradiation for 18 minutes, the degradation rate of RhB was 100%, which was 1.5 times higher than that using pure BiOBr. The results also suggested that holes and ·O2- were the main reactive species in the photocatalytic process for the RhB degradation, and holes played the leading role.

Authors+Show Affiliations

Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China.Zhejiang Huanke Environment Consultancy Company, Hangzhou 310000, China.Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China.Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China.Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China.Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China.

Pub Type(s)

English Abstract
Journal Article

Language

chi

PubMed ID

29965127

Citation

Bao, Yue, et al. "[Performance and Mechanism Study of Visible Light-driven C3N4/BiOBr Composite Photocatalyst]." Huan Jing Ke Xue= Huanjing Kexue, vol. 38, no. 5, 2017, pp. 2182-2190.
Bao Y, Zhou MY, Zou JH, et al. [Performance and Mechanism Study of Visible Light-driven C3N4/BiOBr Composite Photocatalyst]. Huan Jing Ke Xue. 2017;38(5):2182-2190.
Bao, Y., Zhou, M. Y., Zou, J. H., Shi, Y. B., Wan, X. K., & Shi, H. X. (2017). [Performance and Mechanism Study of Visible Light-driven C3N4/BiOBr Composite Photocatalyst]. Huan Jing Ke Xue= Huanjing Kexue, 38(5), 2182-2190. https://doi.org/10.13227/j.hjkx.201606158
Bao Y, et al. [Performance and Mechanism Study of Visible Light-driven C3N4/BiOBr Composite Photocatalyst]. Huan Jing Ke Xue. 2017 May 8;38(5):2182-2190. PubMed PMID: 29965127.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Performance and Mechanism Study of Visible Light-driven C3N4/BiOBr Composite Photocatalyst]. AU - Bao,Yue, AU - Zhou,Min-Yun, AU - Zou,Jun-Hua, AU - Shi,Yu-Bin, AU - Wan,Xian-Kai, AU - Shi,Hui-Xiang, PY - 2018/7/3/entrez PY - 2017/5/8/pubmed PY - 2017/5/8/medline KW - BiOBr KW - C3N4 KW - mechanism KW - rhodamine B KW - visible light-driven photocatalyst SP - 2182 EP - 2190 JF - Huan jing ke xue= Huanjing kexue JO - Huan Jing Ke Xue VL - 38 IS - 5 N2 - Efficient visible light-driven C3N4/BiOBr composite photocatalysts were prepared via a facile hydrothermal method and characterized by X-ray diffraction, Fourier transform infrared, scanning electron microscopy, UV-Vis diffuse reflectance spectra and photoluminescence spectra for the phase composition and optical property. Taking rhodamine B (RhB) as the target pollutant, the photocatalytic activity and stability of photocatalysts were studied under visible light irradiation. Furthermore, the mechanism in the process of photocatalytic degradation was discussed by electron spin resonance spectroscopy analysis and the trapping experiment of generated radicals. The results indicated that C3N4/BiOBr composite photocatalysts had excellent crystallization performance. Composited by C3N4, BiOBr exhibited considerably higher photocatalytic activity by reducing the rate of electron-hole recombination. Among prepared composites with various C3N4 contents, 15% C3N4/BiOBr exhibited the best efficiency for the degradation of RhB. After irradiation for 18 minutes, the degradation rate of RhB was 100%, which was 1.5 times higher than that using pure BiOBr. The results also suggested that holes and ·O2- were the main reactive species in the photocatalytic process for the RhB degradation, and holes played the leading role. SN - 0250-3301 UR - https://www.unboundmedicine.com/medline/citation/29965127/[Performance_and_Mechanism_Study_of_Visible_Light_driven_C3N4/BiOBr_Composite_Photocatalyst]_ DB - PRIME DP - Unbound Medicine ER -
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