TiO2-Mediated Photocatalytic Debromination of Decabromodiphenyl Ether: Kinetics and Intermediates
TiO2-Mediated Photocatalytic Debromination of Decabromodiphenyl Ether: Kinetics and Intermediates
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TiO2 介导的十溴二苯醚光催化脱溴:动力学和中间体
DOI:
10.1021/es801929a
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发表时间:
2009-01-01
影响因子:
11.4
通讯作者:
Zhao, Jincai
中科院分区:
文献类型:
--
作者:
Sun, Chunyan;Zhao, Dan;Zhao, Jincai
In this work, we report the rapid photoreductive debromination of decabromodiphenyl ether (BDE209) by TiO2. The degradation of BDE209 is a stepwise process, and the bromines at the ortho positions are much more susceptible than those at the para positions. The photocatalytic degradation kinetics of BDE209 was further investigated under different reaction conditions (various solvents, in the presence of H2O, acids, or bases). A possible photoreductive debromination pathway was proposed on the basis of the identified reaction intermediates and density functional theory (DFT). This study provides a potential application of photocatalysis in removal of PBDE contamination.