Bactericidal activity of a Ce-promoted Ag/AIPO4 catalyst using molecular oxygen in water
文献类型：期刊论文
| 作者 | Chang, Qingyun1; He, Hong1; Zhao, Jincai2; Yang, Min1; Qu, Jiuhui1 |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2008-03-01 |
| 卷号 | 42期号:5页码:1699-1704 |
| ISSN号 | 0013-936X |
| DOI | 10.1021/es071810e |
| 英文摘要 | The catalytic inactivation of Escherichia coli in water by a cerium (Ce)-promoted silver-loaded aluminum phosphate (Ag/ AIPO(4)) catalyst using molecular oxygen was investigated. With optimum Ce content, the Ag(Ce)/AIPO(4) catalyst exhibited strong bactericidal activity. The process of decomposition of the cell wall and cell membrane was directly observed by TEM. The different morphological changes of E coli cells treated with the Ag(Ce)/AIPO(4) catalyst and those treated with Ag+ suggested that the Ag+ eluted from the catalyst surface did not play an important role during the bactericidal process. Results of DMPO spin-trapping measurements by electron spin resonance (ESR) indicated the formation of the reactive oxygen species (ROS) center dot OH and center dot O-2(-), which caused the considerable bactericidal activity. The formation of H2O2 acted as an important intermediate; this was confirmed by addition of catalase as the scavenger. A possible catalytic oxidation bactericidal mechanism using molecular oxygen was proposed for the Ag(Ce)/AIPO(4) catalyst. |
| 语种 | 英语 |
| WOS记录号 | WOS:000253521300052 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/63483]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | He, Hong |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Eco Environm Sci, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chang, Qingyun,He, Hong,Zhao, Jincai,et al. Bactericidal activity of a Ce-promoted Ag/AIPO4 catalyst using molecular oxygen in water[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2008,42(5):1699-1704. |
| APA | Chang, Qingyun,He, Hong,Zhao, Jincai,Yang, Min,&Qu, Jiuhui.(2008).Bactericidal activity of a Ce-promoted Ag/AIPO4 catalyst using molecular oxygen in water.ENVIRONMENTAL SCIENCE & TECHNOLOGY,42(5),1699-1704. |
| MLA | Chang, Qingyun,et al."Bactericidal activity of a Ce-promoted Ag/AIPO4 catalyst using molecular oxygen in water".ENVIRONMENTAL SCIENCE & TECHNOLOGY 42.5(2008):1699-1704. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。