Plasmon-induced reduction of bromate with Au-Ag-AgI/Al2O3 under visible-light irradiation
文献类型：期刊论文
| 作者 | Tu, Jinjun
|
| 刊名 | JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
 |
| 出版日期 | 2014 |
| 卷号 | 89期号:9页码:1425-1431 |
| 关键词 | photocatalytic reduction bromate organic compounds metal nanoparticles |
| ISSN号 | 0268-2575 |
| 中文摘要 | BACKGROUND: The plasmon-induced photocatalytic reduction of bromate (BrO3-) was investigated in visible-light irradiated Au-Ag-AgI/Al2O3 suspension. The Br-3(-) reduction process was studied in detail. RESULTS: The catalyst was found to be highly effective for the reduction of Br-3(-) from pH 3 to 6. An enhancement of the electrical interaction between Br-3(-) and the positively charged surface of the photocatalyst favored adsorption and reduction of Br-3(-). Organic compounds such as ethanol could react as sacrificial electron donors with excited holes (h(+)) on the metal nanoparticles (NPs) to accelerate electron transfer, inhibiting the release of metal ions and the recombination of h(+) and electrons, hence promoting photocatalytic reduction of Br-3(-). Electron quenching and cyclic voltammetry studies under a variety of experimental conditions verified that Br-3(-) trapped conduction band electrons of AgI from the excited metal NPs were reduced, competing with O-2. CONCLUSION: The photocatalyst Au-Ag-AgI/Al2O3 exhibited particularly good reduction of Br-3(-) under visible-light irradiation. The Br-3(-) reduction was highly favored at acidic condition due to the greater adsorption of Br-3(-) onto the catalyst. This finding indicates that this visible-light-driven catalyst could be applied to the reduction of some oxidative pollutants or even simultaneous removal of both oxidative and reductive pollutants. (C) 2013 Society of Chemical Industry |
| WOS记录号 | WOS:000341763700019 |
| 公开日期 | 2015-03-26 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9583]  |
| 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 | Tu, Jinjun. Plasmon-induced reduction of bromate with Au-Ag-AgI/Al2O3 under visible-light irradiation[J]. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY,2014,89(9):1425-1431. |
| APA | Tu, Jinjun.(2014).Plasmon-induced reduction of bromate with Au-Ag-AgI/Al2O3 under visible-light irradiation.JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY,89(9),1425-1431. |
| MLA | Tu, Jinjun."Plasmon-induced reduction of bromate with Au-Ag-AgI/Al2O3 under visible-light irradiation".JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY 89.9(2014):1425-1431. |
入库方式： OAI收割
来源：生态环境研究中心
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