Light-assisted decomposition of dyes over iron-bearing soil clays in the presence of H2O2
文献类型：期刊论文
| 作者 | Wang, Zhaohui; Ma, Wanhong; Chen, Chuncheng; Zhao, Jincai |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2009-09-15 |
| 卷号 | 168期号:2-3页码:1246-1252 |
| ISSN号 | 0304-3894 |
| 关键词 | Soil Clays Visible Light Photodegradation Fenton-like Dye |
| DOI | 10.1016/j.jhazmat.2009.02.160 |
| 英文摘要 | Four types of soil clays from different sites in China have been chosen to simulate chemical remediation of soils contaminated with dyes by light-assisted Fenton-like method. X-Ray diffraction (XRD), X-ray photoelectron spectroscopic (XPS) and electron spin resonance (ESR) measurements indicated that these soil clays contain iron oxides such as magnetite and hematite, where nondistorted iron active sites (ESR spectra. g = 2.3) predominate. Upon visible or UV it-radiation, the soil clays were very effective for the degradation of nonbiodegradable cationic dyes such as Rhodamine B (RhB) by activating H2O2 at neutral pH. The photodegradation rates of RhB were closely related to total Fe content in clays and H2O2 dosage, indicating the mineral-catalyzed Fenton-like reactions operated. Soil organic matters (SOM) would remarkably inhibit the photodecomposition of RhB dye. The reaction products were some low-molecular-weight dicarboxylic acids and their derivatives, all of which are easily biodegradable. A possible mechanism was proposed based on the results obtained by spin-trapping ESR technique. (C) 2009 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000268200700098 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/68159]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhao, Jincai |
| 作者单位 | Chinese Acad Sci, Beijing Natl Lab Mol Sci, Key Lab Photochem, Inst Chem, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Zhaohui,Ma, Wanhong,Chen, Chuncheng,et al. Light-assisted decomposition of dyes over iron-bearing soil clays in the presence of H2O2[J]. JOURNAL OF HAZARDOUS MATERIALS,2009,168(2-3):1246-1252. |
| APA | Wang, Zhaohui,Ma, Wanhong,Chen, Chuncheng,&Zhao, Jincai.(2009).Light-assisted decomposition of dyes over iron-bearing soil clays in the presence of H2O2.JOURNAL OF HAZARDOUS MATERIALS,168(2-3),1246-1252. |
| MLA | Wang, Zhaohui,et al."Light-assisted decomposition of dyes over iron-bearing soil clays in the presence of H2O2".JOURNAL OF HAZARDOUS MATERIALS 168.2-3(2009):1246-1252. |
入库方式： OAI收割
来源：化学研究所
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