Enhanced photoelectrocatalytic degradation of norfloxacin by an Ag3PO4/BiVO4 electrode with low bias
文献类型：期刊论文
| 作者 | Zhao, Xu; Qiao, Meng ; Wang, Yanbin; Cao, Di
|
| 刊名 | JOURNAL OF CATALYSIS
 |
| 出版日期 | 2018-04-01 |
| 卷号 | 360页码:240-249 |
| 关键词 | Photoelectrooxidation BiVO4 Ag3PO4/BiVO4 composite electrode Norfloxacin Degradation Antibiotics |
| ISSN号 | 0021-9517 |
| 文献子类 | Article |
| 英文摘要 | In this work, an Ag3PO4-modified BiVO4 electrode was prepared on an FTO substrate and used as a photoanode for photoelectrocatalytic degradation of organic contaminants. The photocurrent generated from the synthesized Ag3PO4/BiVO4 photoelectrode under visible light irradiation was more than twice that from pure the BiVO4 electrode, which could be attributed to the lower recombination rate of the photo generated electron-hole pairs of the Ag3PO4/BiVO4 photoanode, as proved by the electrochemical impedance spectroscopy and photoluminescence spectra. The Ag3PO4/BiVO4 electrode was effective for the oxidation of organic pollutants in photoelectrocatalysis systems at relatively low bias potentials. A higher photoelectrocatalytic activity for norfloxacin degradation was observed when the Ag3PO4/BiVO4 electrode was than with the BiVO4 electrode, where norfloxacin with an initial concentration of 5 mg/L could be degraded within 90 min. The apparent rate constants of norfloxacin degradation using a BiVO4 electrode and Ag3PO4/BiVO4 are estimated to be 2.83 x 10(-4) min(-1) (R-2 = 0.994) and 7.94 x 10(-4) min(-1) (R-2 = 0.996), respectively. Analysis of the degradation intermediates indicated that the piperazine ring and the carboxyl group of the norfloxacin were attacked during the degradation process. The Ag3PO4/BiVO4 photoanode was also proved to be effective for the degradation of two other antibiotics, sulfamethoxazole and oxytetracycline. (C) 2018 Elsevier Inc. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/41362]  |
| 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 | Zhao, Xu,Qiao, Meng,Wang, Yanbin,et al. Enhanced photoelectrocatalytic degradation of norfloxacin by an Ag3PO4/BiVO4 electrode with low bias[J]. JOURNAL OF CATALYSIS,2018,360:240-249. |
| APA | Zhao, Xu,Qiao, Meng,Wang, Yanbin,&Cao, Di.(2018).Enhanced photoelectrocatalytic degradation of norfloxacin by an Ag3PO4/BiVO4 electrode with low bias.JOURNAL OF CATALYSIS,360,240-249. |
| MLA | Zhao, Xu,et al."Enhanced photoelectrocatalytic degradation of norfloxacin by an Ag3PO4/BiVO4 electrode with low bias".JOURNAL OF CATALYSIS 360(2018):240-249. |
入库方式： OAI收割
来源：生态环境研究中心
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