Enhanced electron transfer and silver-releasing suppression in Ag-AgBr/titanium-doped Al2O3 suspensions with visible-light irradiation
文献类型：期刊论文
| 作者 | Zhou, Xuefeng ; Hu, Chun ; Hu, Xuexiang ; Peng, Tianwei |
| 刊名 | Engineering; Environmental Sciences & Ecology
 |
| 出版日期 | 2012 |
| 卷号 | 219期号:1页码:276-282 |
| 关键词 | Ag-AgBr/Ti-doped mesoporous alumina Plasmon-assisted photocatalyst Ag dissolution Charge transfer Photoactivity |
| ISSN号 | 0304-3894 |
| 中文摘要 | Ag-AgBr was deposited onto mesoporous alumina (MA) and titanium-doped MA by a deposition-precipitation method. The photocatalytic activity and the dissolution of Ag+ from different catalysts were investigated during the photodegradation of 2-chlorophenol (2-CP) and phenol in ultrapure water and tap water with visible-light irradiation. With the increase in doped titanium, the Ag+ dissolution decreased with a decrease in the photocatalytic activity. Ag-AgBr/MA-Ti1 was considered the better catalyst for practical applications because its Ag+ dissolution was minimal (0.4 mg L-1 in ultrapure water and 5 mu g L-1 in tap water), although its photoactivity was slightly less than that of Ag-AgBr/MA. The dissolution of Ag+ was related to a charge-transfer process based on the study of cyclic voltammetry analyses under a variety of experimental conditions. The results suggested that several types of anions in the water, including CO32-, SO42-, and Cl-, could act as electron donors that trap the photogenerated holes on Ag nanoparticles to facilitate electron circulation; this would decrease the release of Ag+. Our studies indicated that the catalyst had a higher activity and stability in water purification. (C) 2012 Published by Elsevier B.V. |
| WOS记录号 | WOS:000304893600037 |
| 公开日期 | 2014-11-28 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/8135]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhou, Xuefeng,Hu, Chun,Hu, Xuexiang,et al. Enhanced electron transfer and silver-releasing suppression in Ag-AgBr/titanium-doped Al2O3 suspensions with visible-light irradiation[J]. Engineering; Environmental Sciences & Ecology,2012,219(1):276-282. |
| APA | Zhou, Xuefeng,Hu, Chun,Hu, Xuexiang,&Peng, Tianwei.(2012).Enhanced electron transfer and silver-releasing suppression in Ag-AgBr/titanium-doped Al2O3 suspensions with visible-light irradiation.Engineering; Environmental Sciences & Ecology,219(1),276-282. |
| MLA | Zhou, Xuefeng,et al."Enhanced electron transfer and silver-releasing suppression in Ag-AgBr/titanium-doped Al2O3 suspensions with visible-light irradiation".Engineering; Environmental Sciences & Ecology 219.1(2012):276-282. |
入库方式： OAI收割
来源：生态环境研究中心
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