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题名: Bismuth oxybromide promoted detoxification of cylindrospermopsin under UV and visible light illumination
作者: Wang, Shulian1, 2; Ma, Wanhong1; Fang, Yanfen1; Jia, Manke1; Huang, Yingping1
通讯作者: Huang, YP (reprint author), China Three Gorges Univ, Engn Res Ctr Ecoenvironm Three Gorges Reservoir R, Minist Educ, Yichang 443002, Peoples R China.
关键词: Cylindrospermopsin ; Uracil ; BiOBr ; Degradation ; Mechanism
刊名: APPLIED CATALYSIS B-ENVIRONMENTAL
发表日期: 2014-05-05
DOI: 10.1016/j.apcatb.2013.12.016
卷: 150, 页:380-388
收录类别: SCI
文章类型: Article
部门归属: [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
WOS标题词: Science & Technology ; Physical Sciences ; Technology
资助者: National Natural Science Foundation of China [21377067, 21207079, 21177072]
类目[WOS]: Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
研究领域[WOS]: Chemistry ; Engineering
摘要: 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.
英文摘要: 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.
关键词[WOS]: PHOTOCATALYTIC DEGRADATION ; CYANOTOXIN CYLINDROSPERMOPSIN ; CYANOBACTERIAL TOXIN ; NORTHEAST GERMANY ; WATER-SUPPLIES ; 1ST REPORT ; BIOBR ; MICROCYSTIN ; OXIDATION ; MICROSPHERES
语种: 英语
WOS记录号: WOS:000332803700041
ISSN号: 0926-3373
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/20121
Appears in Collections:藻类生物学及应用研究中心_期刊论文

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作者单位: 1.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:
Wang, Shulian; Ma, Wanhong; Fang, Yanfen; Jia, Manke; Huang, Yingping.Bismuth oxybromide promoted detoxification of cylindrospermopsin under UV and visible light illumination,APPLIED CATALYSIS B-ENVIRONMENTAL,2014,150():380-388
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