Aniline chlorination by in situ formed Ag-Cl complexes under simulated solar light irradiation

被引:4
|
作者
Hu, Xuefeng [1 ,2 ]
Wang, Xiaowen [1 ,2 ]
Dong, Liuliu [1 ,4 ]
Chang, Fei [3 ]
Luo, Yongming [1 ,2 ]
机构
[1] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Univ Shanghai Sci & Technol, Sch Environm & Architecture, Shanghai 200093, Peoples R China
[4] Yantai Univ, Environm & Mat Engn, Yantai 264005, Shandong, Peoples R China
基金
中国国家自然科学基金;
关键词
aniline; Ag-Cl complexes; Cl/Ag ratio; photochlorination; RATE CONSTANTS; SALINE WATER; PHOTOCHLORINATION; ACETONITRILE; DEGRADATION; IONS;
D O I
10.2166/wst.2015.149
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Ag speciation in a chloride medium was dependent upon the Cl/Ag ratio after releasing into surface water. In this study, the photoreaction of in situ formed Ag-Cl species and their effects on aniline photochlorination were systematically investigated. Our results suggested that formation of chloroaniline was strongly relevant to the Cl/Ag ratio and could be interpreted using the thermodynamically expected speciation of Ag in the presence of Cl-. AgCl was the main species responsible for the photochlorination of aniline. Both photoinduced hole and center dot OH drove the oxidation of Cl- to radical center dot Cl, which promoted the chlorination of aniline. Ag-0 formation was observed from the surface plasmon resonance absorption during AgCl photoreaction. This study revealed that Ag+ released into Cl--containing water may result in the formation of chlorinated intermediates of organic compounds under solar light irradiation.
引用
收藏
页码:1679 / 1685
页数:7
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