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Bismuth oxybromide promoted detoxification of cylindrospermopsin under UV and visible light illumination
Wang, Shulian1,2; Ma, Wanhong1; Fang, Yanfen1; Jia, Manke1; Huang, Yingping1; Huang, YP (reprint author), China Three Gorges Univ, Engn Res Ctr Ecoenvironm Three Gorges Reservoir R, Minist Educ, Yichang 443002, Peoples R China.
2014-05-05
Source PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
ISSN0926-3373
Volume150Pages:380-388
AbstractBismuth oxybromide (BiOBr) was prepared and characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and UV-vis diffuse reflectance spectroscopy (DRS). The BiOBr promoted detoxification of cylindrospermopsin (CYN) under UV (lambda < 350 nm) and visible light (lambda > 420 nm) illumination was studied. The results revealed that the toxic uracil unit of CYN was removed, and the carboxylic group of the degraded product was also decomposed, to give the innoxious tricyclic guanidine product under the title conditions. In contrast, the traditional Fenton reagents (Fe2+ and H2O2) limited to remove the uracil moiety of CYN with the carboxylic group intact. Presumably, the decarboxylation ability of BiOBr was induced by Br 4p valence band hole (h(Br) (+)(4p)), and the degradation mechanism was also proposed based on the experimental results and theoretical calculation. (C) 2013 Elsevier B.V. All rights reserved.; Bismuth oxybromide (BiOBr) was prepared and characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and UV-vis diffuse reflectance spectroscopy (DRS). The BiOBr promoted detoxification of cylindrospermopsin (CYN) under UV (lambda < 350 nm) and visible light (lambda > 420 nm) illumination was studied. The results revealed that the toxic uracil unit of CYN was removed, and the carboxylic group of the degraded product was also decomposed, to give the innoxious tricyclic guanidine product under the title conditions. In contrast, the traditional Fenton reagents (Fe2+ and H2O2) limited to remove the uracil moiety of CYN with the carboxylic group intact. Presumably, the decarboxylation ability of BiOBr was induced by Br 4p valence band hole (h(Br) (+)(4p)), and the degradation mechanism was also proposed based on the experimental results and theoretical calculation. (C) 2013 Elsevier B.V. All rights reserved.
SubtypeArticle
KeywordCylindrospermopsin Uracil Biobr Degradation Mechanism
Department[Wang, Shulian; Ma, Wanhong; Fang, Yanfen; Jia, Manke; Huang, Yingping] China Three Gorges Univ, Engn Res Ctr Ecoenvironm Three Gorges Reservoir R, Minist Educ, Yichang 443002, Peoples R China; [Wang, Shulian] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
DOI10.1016/j.apcatb.2013.12.016
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Funding OrganizationNational Natural Science Foundation of China [21377067, 21207079, 21177072] ; National Natural Science Foundation of China [21377067, 21207079, 21177072] ; National Natural Science Foundation of China [21377067, 21207079, 21177072] ; National Natural Science Foundation of China [21377067, 21207079, 21177072]
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
WOS IDWOS:000332803700041
WOS KeywordPHOTOCATALYTIC DEGRADATION ; CYANOTOXIN CYLINDROSPERMOPSIN ; CYANOBACTERIAL TOXIN ; NORTHEAST GERMANY ; WATER-SUPPLIES ; 1ST REPORT ; BIOBR ; MICROCYSTIN ; OXIDATION ; MICROSPHERES
Funding OrganizationNational Natural Science Foundation of China [21377067, 21207079, 21177072] ; National Natural Science Foundation of China [21377067, 21207079, 21177072] ; National Natural Science Foundation of China [21377067, 21207079, 21177072] ; National Natural Science Foundation of China [21377067, 21207079, 21177072]
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/20121
Collection藻类生物学及应用研究中心_期刊论文
Corresponding AuthorHuang, YP (reprint author), China Three Gorges Univ, Engn Res Ctr Ecoenvironm Three Gorges Reservoir R, Minist Educ, Yichang 443002, Peoples R China.
Affiliation1.China Three Gorges Univ, Engn Res Ctr Ecoenvironm Three Gorges Reservoir R, Minist Educ, Yichang 443002, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Wang, Shulian,Ma, Wanhong,Fang, Yanfen,et al. Bismuth oxybromide promoted detoxification of cylindrospermopsin under UV and visible light illumination[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2014,150:380-388.
APA Wang, Shulian,Ma, Wanhong,Fang, Yanfen,Jia, Manke,Huang, Yingping,&Huang, YP .(2014).Bismuth oxybromide promoted detoxification of cylindrospermopsin under UV and visible light illumination.APPLIED CATALYSIS B-ENVIRONMENTAL,150,380-388.
MLA Wang, Shulian,et al."Bismuth oxybromide promoted detoxification of cylindrospermopsin under UV and visible light illumination".APPLIED CATALYSIS B-ENVIRONMENTAL 150(2014):380-388.
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