Catalytic ozonation of toxic pollutants over magnetic cobalt and manganese co-doped gamma-Fe2O3
文献类型：期刊论文
| 作者 | Lv, Aihua; Hu, Chun; Nie, Yulun; Qu, Jiuhui |
| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2010-10-11 |
| 卷号 | 100期号:3页码:62-67 |
| 关键词 | ATR-FTIR Catalytic ozonation Magnetic catalyst Multivalence Surface Lewis acid sites |
| 中文摘要 | Magnetic Co- and Co, Mn-doped gamma-Fe2O3 (FC and FCM) were prepared by co-precipitation method and characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), in situ attenuated total reflection FTIR (ATR-FTIR) spectroscopy and cyclic voltammetry (CV) analyses. FCM was found to be highly effective for the mineralization of 2,4-dichlorophenoxyacetic acid and its derivatives 2,4-diclorophenol, 2,4,6-trichlorophenol in aqueous solution with ozone. The characterization studies showed that Co and Mn incorporated in gamma-Fe2O3 existed as multivalence oxidation states, and there were more Lewis acid sites on the surface of FCM. The interaction of ozone with chemisorbed H2O and surface hydroxyl groups generated from dissociative adsorption of H2O on Lewis acid sites initiated the production of reactive oxygen species. Moreover, a redox process was observed in the catalytic decomposition of O-3 at the water-catalyst interface by CV analysis. The results indicated that the introduction of Mn not only increased the surface Lewis acid sites of FCM to cause more surface hydroxyl groups and chemisorbed water, but also enhanced the interfacial electron transfer, resulting in higher activity. (C) 2010 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000283963000008 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21213]  |
| 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 | Lv, Aihua,Hu, Chun,Nie, Yulun,et al. Catalytic ozonation of toxic pollutants over magnetic cobalt and manganese co-doped gamma-Fe2O3[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2010,100(3):62-67. |
| APA | Lv, Aihua,Hu, Chun,Nie, Yulun,&Qu, Jiuhui.(2010).Catalytic ozonation of toxic pollutants over magnetic cobalt and manganese co-doped gamma-Fe2O3.APPLIED CATALYSIS B-ENVIRONMENTAL,100(3),62-67. |
| MLA | Lv, Aihua,et al."Catalytic ozonation of toxic pollutants over magnetic cobalt and manganese co-doped gamma-Fe2O3".APPLIED CATALYSIS B-ENVIRONMENTAL 100.3(2010):62-67. |
入库方式： OAI收割
来源：生态环境研究中心
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