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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
2016-05
Source PublicationCHEMOSPHERE
Volume150Issue:0Pages:445-452
AbstractA 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.
Department环境化学与生态毒理学国家重点实验室
KeywordDegradation Pathway 2 Morphology 2 ' Component 4 4 '-tetrabromodiphenyl Ether
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Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/35965
Collection环境化学与生态毒理学国家重点实验室
Recommended Citation
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.
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