Thermal degradation of 2,2 ',4,4 '-tetrabromodiphenyl ether (BDE-47) over synthesized Fe-Al composite oxide

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Thermal degradation of 2,2 ',4,4 '-tetrabromodiphenyl ether (BDE-47) over synthesized Fe-Al composite oxide
	Yang, Fan; Li, Qianqian; Su, Guijin; Huang, Xinchen; Li, Binke; Zhao, Yanhui; Miao, Xue; Zheng, Minghui
刊名	CHEMOSPHERE
	2016-05
卷号	150 期号:0 页码:445-452
关键词	2,2 ',4,4 '-tetrabromodiphenyl ether Degradation pathway Morphology Component
英文摘要	A series of Fe-Al composite oxides were synthesized by the hydrothermal method using different urea dosages and examined towards the degradation of 2,2',4,4'-tetrabromodiphenyl ether (BDE-47) at 300 degrees C. The as-prepared oxides were characterized by field-emission scanning electron microscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy. The morphology and composition of the prepared materials could be regulated by controlling the urea concentration. Interestingly, these properties influenced the nature and amount of the hydrodebromination products generated during the degradation of BDE-47. The degradation of BDE-47 over the composite oxide prepared at a urea dosage of 3 mmol generated BDE-17 as the major isomer product, followed by BDE-28/33, -30, and -32, among the tri-bromodiphenyl ethers (tri-BDEs). Regarding the dibromodiphenyl ethers (di-BDEs) produced, the amount of the isomers decreased in the order of BDE-8/11 > BDE-7 > BDE-15 > BDE-10. And the BDE-1 among monobromodiphenyl was determined. In contrast, over the composite oxides prepared at urea dosages greater than 3 mmol, BDE-28/33 gradually become the major isomer product instead of BDE-17 among tri-BDEs. The amount of the other di-BDEs isomer such as BDE-15 and -10 approach to be comparable to that BDE-8/11. However, regardless of the urea dosage, BDE-47 converted into BDE-75 via an isomerization reaction. Based on these intermediate products identification, a possible hydrodebromination mechanism of BDE-47 over Fe-Al composite oxide was comprehensively traced. (C) 2016 Elsevier Ltd. All rights reserved.
收录类别	SCI
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/35965]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
推荐引用方式 GB/T 7714	Yang, Fan,Li, Qianqian,Su, Guijin,et al. Thermal degradation of 2,2 ',4,4 '-tetrabromodiphenyl ether (BDE-47) over synthesized Fe-Al composite oxide[J]. CHEMOSPHERE,2016,150(0):445-452.
APA	Yang, Fan.,Li, Qianqian.,Su, Guijin.,Huang, Xinchen.,Li, Binke.,...&Zheng, Minghui.(2016).Thermal degradation of 2,2 ',4,4 '-tetrabromodiphenyl ether (BDE-47) over synthesized Fe-Al composite oxide.CHEMOSPHERE,150(0),445-452.
MLA	Yang, Fan,et al."Thermal degradation of 2,2 ',4,4 '-tetrabromodiphenyl ether (BDE-47) over synthesized Fe-Al composite oxide".CHEMOSPHERE 150.0(2016):445-452.