Debromination of polybrominated diphenyl ethers by attapulgite-supported Fe/Ni bimetallic nanoparticles: Influencing factors, kinetics and mechanism
文献类型：期刊论文
| 作者 | Liu, Zongtang1,2; Gu, Chenggang1; Ye, Mao1; Bian, Yongrong1; Cheng, Yinwen1,2; Wang, Fang1; Yang, Xinglun1; Song, Yang1; Jiang, Xin1 |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2015-11-15 |
| 卷号 | 298页码:328-337 |
| 关键词 | Polybrominated diphenyl ethers Supported Fe/Ni nanoparticles Attapulgite Debromination Kinetics |
| ISSN号 | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2015.05.032 |
| 通讯作者 | Jiang, Xin(jiangxin@issas.ac.cn) |
| 英文摘要 | o enhance the removal efficiency of 2,2',4,4'-tetrabromodiphenylether (BDE47) in aqueous solutions, novel attapulgite-supported Fe/Ni bimetallic nanoparticles (A-Fe/Ni), which were characterized by a core-shell nanoparticle structure and with an average diameter of 20-40 nm, were synthesized for use in BDE47 degradation. The presence of attapulgite in bimetallic systems could reduce Fe/Ni nanoparticle aggregation and enhance their reactivity. BDE47 was degraded with a significant improvement in removal efficiency of at least 96% by A-Fe/Ni that played a reductive role in the reaction. The degradation kinetics of BDE47 by A-Fe/Ni complied with pseudo-first-order characteristics. To better understand the removal mechanism, detailed analyses were performed for several influential parameters. The improved dosage of A-Fe/Ni was found to be beneficial, and higher values of initial concentration, pH, and methanol/water ratio hindered the degradation rate, which, for example, decreased significantly in mixtures with a methanol proportion higher than 50%. The identification of BDE47 degradation products revealed a stepwise debromination from n-bromo-DE to (n-1)-bromo-DE as a possible pathway, wherein the para-Br was more easily eliminated than ortho-Br. Our findings provide insight into the removal mechanism and evidence for polybrominated diphenyl ether debromination by clay-Fe/Ni bimetallic nanoparticles. (C) 2015 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | ZERO-VALENT IRON ; NANOSCALE ZEROVALENT IRON ; BROMINATED FLAME RETARDANTS ; AQUEOUS-SOLUTION ; DECABROMODIPHENYL ETHER ; ENVIRONMENTAL APPLICATIONS ; REDUCTIVE DECHLORINATION ; SOUTHERN CHINA ; REMOVAL ; DEGRADATION |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| WOS类目 | Engineering, Environmental ; Engineering, Civil ; Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000360595800036 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558320 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Jiang, Xin |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Zongtang,Gu, Chenggang,Ye, Mao,et al. Debromination of polybrominated diphenyl ethers by attapulgite-supported Fe/Ni bimetallic nanoparticles: Influencing factors, kinetics and mechanism[J]. JOURNAL OF HAZARDOUS MATERIALS,2015,298:328-337. |
| APA | Liu, Zongtang.,Gu, Chenggang.,Ye, Mao.,Bian, Yongrong.,Cheng, Yinwen.,...&Jiang, Xin.(2015).Debromination of polybrominated diphenyl ethers by attapulgite-supported Fe/Ni bimetallic nanoparticles: Influencing factors, kinetics and mechanism.JOURNAL OF HAZARDOUS MATERIALS,298,328-337. |
| MLA | Liu, Zongtang,et al."Debromination of polybrominated diphenyl ethers by attapulgite-supported Fe/Ni bimetallic nanoparticles: Influencing factors, kinetics and mechanism".JOURNAL OF HAZARDOUS MATERIALS 298(2015):328-337. |
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来源：南京土壤研究所
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