Photoreductive Debromination of Decabromodiphenyl Ethers in the Presence of Carboxylates under Visible Light Irradiation
文献类型：期刊论文
| 作者 | Sun, Chunyan1,2; Chang, Wei1; Ma, Wanhong1; Chen, Chuncheng1; Zhao, Jincai1 |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2013-03-05 |
| 卷号 | 47期号:5页码:2370-2377 |
| ISSN号 | 0013-936X |
| DOI | 10.1021/es3045604 |
| 英文摘要 | Polybrominated diphenyl ethers (PBDEs) have aroused global environmental concerns because of their toxicity and ubiquitousness in the biological and environmental systems. It is important to find an efficient method for their decontamination and to understand their chemical transformation in the environment. Here, we report that decabromodiphenyl ether (BDE209) undergoes efficient reductive debromination reactions under visible-light irradiation (>= 420 nm) in the presence of various carboxylate anions that are common in the environmental media. The debromination reactions occur in a stepwise manner, producing a series of lower brominated PBDE congeners. Solvent-derived radials are observed by spin-trapping electron spin resonance (ESR) experiments during the photoreaction. Further experiments by the UV-vis absorption and isothermal titration calorimetry (ITC), combined with theoretical calculations, reveal a new photochemical debromination pathway based on the halogen binding interaction. According to this pathway, the formation of halogen-binding-based complex between PBDE and carboxylate enables the visible-light absorption and debromination of PBDEs, although neither PBDEs nor carboxylates have visible-light absorption. The halogen-bond-based photochemical debromination could find its application for our better understanding of the transformation process of PBDEs in the environment. |
| 语种 | 英语 |
| WOS记录号 | WOS:000315844200030 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/54441]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Chen, Chuncheng |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Key Lab Photochem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Shaoxing Univ, Dept Chem, Zhejiang Shaoxing 312000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Chunyan,Chang, Wei,Ma, Wanhong,et al. Photoreductive Debromination of Decabromodiphenyl Ethers in the Presence of Carboxylates under Visible Light Irradiation[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2013,47(5):2370-2377. |
| APA | Sun, Chunyan,Chang, Wei,Ma, Wanhong,Chen, Chuncheng,&Zhao, Jincai.(2013).Photoreductive Debromination of Decabromodiphenyl Ethers in the Presence of Carboxylates under Visible Light Irradiation.ENVIRONMENTAL SCIENCE & TECHNOLOGY,47(5),2370-2377. |
| MLA | Sun, Chunyan,et al."Photoreductive Debromination of Decabromodiphenyl Ethers in the Presence of Carboxylates under Visible Light Irradiation".ENVIRONMENTAL SCIENCE & TECHNOLOGY 47.5(2013):2370-2377. |
入库方式： OAI收割
来源：化学研究所
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