Enhanced catalytic degradation of ciprofloxacin over Ce-doped OMS-2 microspheres
文献类型：期刊论文
| 作者 | Zhang, Lili ; Tu, Jinjun; Lyu, Lai; Hu, Chun
|
| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2016-02 |
| 卷号 | 181期号:0页码:561-569 |
| 关键词 | Ce-oms-2 Catalytic Oxidation Ciprofloxacin O-2(Center Dot-) Radicals |
| DOI | 10.1016/j.apcatb.2015.08.029 |
| 英文摘要 | A novel Ce-doped manganese oxide octahedral molecular sieve (Ce-OMS-2) was prepared by a reflux method and characterized by field emission scanning electron microscope, high resolution transmission electron microscopy, Fourier-transform infrared spectra, nitrogen adsorption/desorption isotherms, Xray diffraction and X-ray photoelectron spectroscopy. The Ce(0.48)-OMS-2 with Ce/Mn molar ratio of 0.48 was highly effective and stable for the degradation of ciprofloxacin in water. The characterized results indicated that Ce mainly entered the tunnel structure of OMS-2, significantly increasing the BET surface area from 72 m(2)/g for OMS-2 to 304 m(2)/g for Ce(0.48)-OMS-2. Moreover, the surface oxygen defects and surface labile oxygen significantly increased after the introduction of Ce into OMS-2, being determined by the O1s spectra and O-2-TPD analysis. The ESR and activity tests under different conditions suggested that the reduced manganese Mn(II) could interact with surface labile oxygen to form O-2(center dot-) and Mn(IV), resulting in the high activity of Ce(0.48)-OMS-2 to degrade the piperazine ring and the quinolone moiety of CIP into small molecular products. Simultaneously, the release of Mn(II) was inhibited by the electron transfer process on the micro-interface of Ce(0.48)-OMS-2. (C) 2015 Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/36175]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, Lili,Tu, Jinjun,Lyu, Lai,et al. Enhanced catalytic degradation of ciprofloxacin over Ce-doped OMS-2 microspheres[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2016,181(0):561-569. |
| APA | Zhang, Lili,Tu, Jinjun,Lyu, Lai,&Hu, Chun.(2016).Enhanced catalytic degradation of ciprofloxacin over Ce-doped OMS-2 microspheres.APPLIED CATALYSIS B-ENVIRONMENTAL,181(0),561-569. |
| MLA | Zhang, Lili,et al."Enhanced catalytic degradation of ciprofloxacin over Ce-doped OMS-2 microspheres".APPLIED CATALYSIS B-ENVIRONMENTAL 181.0(2016):561-569. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。