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Photocatalytic removal of tetrabromobisphenol A by magnetically separable flower-like BiOBr/BiOI/Fe3O4 hybrid nanocomposites under visible-light irradiation.
J Hazard Mater. 2017 Jun 05; 331:1-12.JH

Abstract

A novel flower-like three-dimensional BiOBr/BiOI/Fe3O4 heterojunction photocatalyst was synthesized using a simple in situ co-precipitation method at room temperature. The hybrid composites were characterized by a couple of techniques including X-ray powder diffraction, scanning electron microscope, transmission electron microscopy, ultraviolet-visible diffuse reflection spectroscopy, Brunauer-Emmett-Teller, X-ray photo-electron spectroscopy, photoluminescence technique, and vibrating sample magnetometer. Fe3O4 nanoparticles were perfectly loaded on the surface of BiOBr/BiOI microspheres. The recyclable magnetic BiOBr/BiOI/Fe3O4 was employed to degrade TBBPA under visible light irradiation. The optimal removal efficiency of the ternary BiOBr/BiOI/Fe3O4 (2:2:0.5) nanocomposite reached up to 98.5% for TBBPA in aqueous solution. The superior photocatalytic activity of BiOBr/BiOI/Fe3O4 was mainly ascribed to large surface area and appropriate energy gaps, resulting in the effective adsorption and separation of electrons-hole pairs. The photogenerated reactive species determined by free radicals trapping experiments revealed that the excellent catalytic activity was primarily driven by O2- radical. The photocatalytic degradation kinetics and a detailed mechanism were also proposed. Result demonstrated that the BiOBr/BiOI/Fe3O4 can be magnetically recycled, and maintain high photocatalytic activity after reuse over five cycles. It suggested that the synthesized material had a potentially promising application for TBBPA removal by photocatalytic degradation from wastewater.

Authors+Show Affiliations

Department of Chemistry, College of Science, North University of China, Taiyuan 030051, China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.Heilongjiang Research Academy of Environmental Sciences, Harbin 150056, China.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.Department of Chemistry, College of Science, North University of China, Taiyuan 030051, China.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China. Electronic address: xujian@craes.org.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28242523

Citation

Gao, Shengwang, et al. "Photocatalytic Removal of Tetrabromobisphenol a By Magnetically Separable Flower-like BiOBr/BiOI/Fe3O4 Hybrid Nanocomposites Under Visible-light Irradiation." Journal of Hazardous Materials, vol. 331, 2017, pp. 1-12.
Gao S, Guo C, Hou S, et al. Photocatalytic removal of tetrabromobisphenol A by magnetically separable flower-like BiOBr/BiOI/Fe3O4 hybrid nanocomposites under visible-light irradiation. J Hazard Mater. 2017;331:1-12.
Gao, S., Guo, C., Hou, S., Wan, L., Wang, Q., Lv, J., Zhang, Y., Gao, J., Meng, W., & Xu, J. (2017). Photocatalytic removal of tetrabromobisphenol A by magnetically separable flower-like BiOBr/BiOI/Fe3O4 hybrid nanocomposites under visible-light irradiation. Journal of Hazardous Materials, 331, 1-12. https://doi.org/10.1016/j.jhazmat.2017.02.030
Gao S, et al. Photocatalytic Removal of Tetrabromobisphenol a By Magnetically Separable Flower-like BiOBr/BiOI/Fe3O4 Hybrid Nanocomposites Under Visible-light Irradiation. J Hazard Mater. 2017 Jun 5;331:1-12. PubMed PMID: 28242523.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Photocatalytic removal of tetrabromobisphenol A by magnetically separable flower-like BiOBr/BiOI/Fe3O4 hybrid nanocomposites under visible-light irradiation. AU - Gao,Shengwang, AU - Guo,Changsheng, AU - Hou,Song, AU - Wan,Li, AU - Wang,Qiang, AU - Lv,Jiapei, AU - Zhang,Yuan, AU - Gao,Jianfeng, AU - Meng,Wei, AU - Xu,Jian, Y1 - 2017/02/20/ PY - 2016/10/31/received PY - 2017/02/16/revised PY - 2017/02/17/accepted PY - 2017/3/1/pubmed PY - 2017/3/1/medline PY - 2017/3/1/entrez KW - BiOBr/BiOI/Fe(3)O(4) nanocomposites KW - Photocatalycal degradation KW - Tetrabromobisphenol A (TBBPA) KW - Visible light irradiation SP - 1 EP - 12 JF - Journal of hazardous materials JO - J. Hazard. Mater. VL - 331 N2 - A novel flower-like three-dimensional BiOBr/BiOI/Fe3O4 heterojunction photocatalyst was synthesized using a simple in situ co-precipitation method at room temperature. The hybrid composites were characterized by a couple of techniques including X-ray powder diffraction, scanning electron microscope, transmission electron microscopy, ultraviolet-visible diffuse reflection spectroscopy, Brunauer-Emmett-Teller, X-ray photo-electron spectroscopy, photoluminescence technique, and vibrating sample magnetometer. Fe3O4 nanoparticles were perfectly loaded on the surface of BiOBr/BiOI microspheres. The recyclable magnetic BiOBr/BiOI/Fe3O4 was employed to degrade TBBPA under visible light irradiation. The optimal removal efficiency of the ternary BiOBr/BiOI/Fe3O4 (2:2:0.5) nanocomposite reached up to 98.5% for TBBPA in aqueous solution. The superior photocatalytic activity of BiOBr/BiOI/Fe3O4 was mainly ascribed to large surface area and appropriate energy gaps, resulting in the effective adsorption and separation of electrons-hole pairs. The photogenerated reactive species determined by free radicals trapping experiments revealed that the excellent catalytic activity was primarily driven by O2- radical. The photocatalytic degradation kinetics and a detailed mechanism were also proposed. Result demonstrated that the BiOBr/BiOI/Fe3O4 can be magnetically recycled, and maintain high photocatalytic activity after reuse over five cycles. It suggested that the synthesized material had a potentially promising application for TBBPA removal by photocatalytic degradation from wastewater. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/28242523/Photocatalytic_removal_of_tetrabromobisphenol_A_by_magnetically_separable_flower_like_BiOBr/BiOI/Fe3O4_hybrid_nanocomposites_under_visible_light_irradiation_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(17)30118-8 DB - PRIME DP - Unbound Medicine ER -
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