Characterization and reactivity of biogenic manganese oxides for ciprofloxacin oxidation
文献类型：期刊论文
| 作者 | Tu, Jinjun ; Yang, Zhendong ; Hu, Chun ; Qu, Jiuhui |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2014 |
| 卷号 | 26期号:5页码:1154-1161 |
| 关键词 | Mn oxidation state Mn-oxidizing bacteria superoxide radicals ciprofloxacin degradation |
| ISSN号 | 1001-0742 |
| 中文摘要 | Biogenic manganese oxides (BioMnO(x)) were synthesized by the oxidation of Mn(II) with Mn-oxidizing bacteria Pseudomonas sp. G7 under different initial pH values and Mn(II) dosages, and were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, and UV-Vis absorption spectroscopy. The crystal structure and Mn oxidation states of BioMnOx depended on the initial pH and Mn(II) dosages of the medium. The superoxide radical (O-2(center dot-)) was observed in Mn-containing (III/IV) BioMnO(x) suspensions by electron spin resonance measurements. BioMnO(x)(0.4)-7, with mixed valence of Mn(II/III/IV) and the strongest O-2(center dot-) signals, was prepared in the initial pH 7 and Mn(II) dosage of 0.4 mmol/L condition, and exhibited the highest activity for ciprofloxacin degradation and no Mn(II) release. During the degradation of ciprofloxacin, the oxidation of the Mn(II) formed came from biotic and abiotic reactions in BioMnO(x) suspensions on the basis of the Mn(II) release and O-2(center dot-) formation from different BioMnO(x). The degradation process of ciprofloxacin was shown to involve the cleavage of the hexatomic ring having a secondary amine and carbon-carbon double bond connected to a carboxyl group, producing several compounds containing amine groups as well as small organic acids. |
| WOS记录号 | WOS:000335489400023 |
| 公开日期 | 2015-03-26 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9510]  |
| 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,Yang, Zhendong,Hu, Chun,et al. Characterization and reactivity of biogenic manganese oxides for ciprofloxacin oxidation[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2014,26(5):1154-1161. |
| APA | Tu, Jinjun,Yang, Zhendong,Hu, Chun,&Qu, Jiuhui.(2014).Characterization and reactivity of biogenic manganese oxides for ciprofloxacin oxidation.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,26(5),1154-1161. |
| MLA | Tu, Jinjun,et al."Characterization and reactivity of biogenic manganese oxides for ciprofloxacin oxidation".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 26.5(2014):1154-1161. |
入库方式： OAI收割
来源：生态环境研究中心
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