Efficient degradation of p-nitrophenol by electro-oxidation on Fe doped Ti/TiO2 nanotube/PbO2 anode

被引：61

作者：

Jiang, Yonghai ^{[1
]}

Hu, Zhongxin ^{[2
]}

Zhou, Minghua ^{[2
]}

Zhou, Lei ^{[2
]}

Xi, Beidou ^{[1
]}

机构：

[1] Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China

[2] Nankai Univ, Coll Environm Sci & Engn, Tianjin Key Lab Urban Ecol Environm Remediat & Po, Key Lab Pollut Proc & Environm Criteria,Minist Ed, Tianjin 300071, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2014年 / 128卷

基金：

国家高技术研究发展计划(863计划);

关键词：

Electrochemical oxidation; TiO2; nanotube; Fe doped PbO2 anode; p-Nitrophenol degradation; ELECTRODES; REMEDIATION; POLLUTANTS; OXIDATION;

D O I：

10.1016/j.seppur.2014.03.015

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A novel Fe doped PbO2 electrode with a high oxygen evolution potential (OEP) and excellent electrochemical oxidation performance was prepared based on Ti/TiO2 nanotube arrays (TNTs) for p-nitrophenol (p-NP) degradation. Characterized by scanning electron microscope (SEM), linear sweep voltammetry (LSV) and chronoamporometric experiments, the effect of Fe doping amount on the electrode activity was investigated. Fe doping on PbO2 electrode improved the electrode morphology, OEP, step current and thus the degradation of p-NP. The optimal Fe doped concentration was 0.02 M, and the electrode prepared under this condition possessed the highest OEP of 2.7 V and p-NP degradation performance. After 90 min treatment, the p-NP degradation efficiency reached 100% with similar energy consumption, and the reaction rate constant increased about 43 times compared with that of the unmodified one. This Fe doped Ti/TNTs/PbO2 anode has a more promising application potential in treatment of wastewater containing biorefractory organic pollutants. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：67 / 71

页数：5

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