Electrocatalytic degradation of 4-chlorophenol on F-doped PbO(2) anodes
文献类型：期刊论文
| 作者 | J. L. Cao ; H. Y. Zhao ; F. H. Cao ; J. Q. Zhang ; C. N. Cao |
| 刊名 | Electrochimica Acta
 |
| 出版日期 | 2009 |
| 卷号 | 54期号:9页码:2595-2602 |
| 关键词 | PbO(2) F-doped PbO(2) Electrocatalytic degradation 4-Chlorophenol Electron spin resonance lead dioxide electrode electrochemical oxidation waste-water physicochemical properties oxygen evolution aqueous-solution ozone acid incineration behavior |
| ISSN号 | 0013-4686 |
| 中文摘要 | PbO(2) and F-doped PbO(2) (F-PbO(2)) anodes have been prepared by a standard thermal decomposition-electrodeposition technique. The electrochemical stability of these anodes has been investigated by the accelerated life tests in sulphuric acid solution. The results show that the service life of the F-PbO(2) anodes is almost three times longer than that of the PbO(2) anodes. Furthermore, in the degradation of 4-chlorophenol (4-CP), the F-PbO(2) anodes give a higher degradation rate than that observed for the PbO(2) anodes. The influence of F(-) anion doping on the stability and activity of PbO(2) anodes has been discussed. With the F-PbO(2) anodes, the degradation of 4-CP is investigated according to the results of high-performance liquid chromatograph (HPLC), ionic chromatograph (IC) and cyclic voltammetry (CV). In addition, the electron spin resonance(ESR) technique using 5,5-dimethyl-1-pyrroline-N-oxide (DMPO)as the spin-trap reagent has been applied to detect free radical intermediates generated during in situ the electrocatalytic degradation of aqueous 4-CP on the F-PbC2 anodes. ESR measurements give the direct evidence that the active species (*OH) are responsible for the decomposition of 4-CP over F-PbO(2) under anodic bias potential, strongly suggesting that the electrocatalytic degradation of most organic compounds on F-PbO(2) anodes proceed via surface intermediates of water oxidation, not via direct oxidation at electrode surface. The formation mechanism of surface intermediates is also discussed. (C) 2008 Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31815]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | J. L. Cao,H. Y. Zhao,F. H. Cao,et al. Electrocatalytic degradation of 4-chlorophenol on F-doped PbO(2) anodes[J]. Electrochimica Acta,2009,54(9):2595-2602. |
| APA | J. L. Cao,H. Y. Zhao,F. H. Cao,J. Q. Zhang,&C. N. Cao.(2009).Electrocatalytic degradation of 4-chlorophenol on F-doped PbO(2) anodes.Electrochimica Acta,54(9),2595-2602. |
| MLA | J. L. Cao,et al."Electrocatalytic degradation of 4-chlorophenol on F-doped PbO(2) anodes".Electrochimica Acta 54.9(2009):2595-2602. |
入库方式： OAI收割
来源：金属研究所
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