Preparation of Ti/PbO2-Sn anodes for electrochemical degradation of phenol

被引:62
|
作者
Li, Hongyi [1 ,2 ]
Chen, Yong [1 ,3 ]
Zhang, Yaohui [1 ,3 ]
Han, Weiqing [1 ]
Sun, Xiuyun [1 ]
Li, Jiansheng [1 ]
Wang, Lianjun [1 ]
机构
[1] Nanjing Univ Sci & Technol, Sch Environm & Biol Engn, Jiangsu Key Lab Chem Pollut Control & Resources R, Nanjing 210094, Jiangsu, Peoples R China
[2] Nanjing Inst Technol, Dept Environm Engn, Nanjing 211167, Jiangsu, Peoples R China
[3] Jiangsu Prov Acad Environm Sci, Nanjing 210036, Jiangsu, Peoples R China
关键词
Sn-doped Ti/PbO2 anodes; Coating structure; Oxygen evolution overpotential; Electrochemical degradation; WASTE-WATER TREATMENT; LEAD DIOXIDE; PBO2; ANODES; SI/BDD ELECTRODES; AQUEOUS-SOLUTION; THIN-FILM; OXIDATION; ACID; FUNDAMENTALS; INCINERATION;
D O I
10.1016/j.jelechem.2012.11.035
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The novel Sn-doped Ti/PbO2 (Ti/PbO2-Sn) anodes have been prepared by cathodic deposition and anodization processes. The effect of Sn content on the structure and electrocatalytic performance of Ti/PbO2-Sn anodes has been studied. The surface coating structure and composition of the anodes were characterized by SEM, EDX and XRD. The results reveal that a limited amount of doping Sn can improve the coating structure of the PbO2 layer, and an over-doping of Sn has an adverse effect on the coating structure and crystallinity of beta-PbO2. Linear polarization curves analysis shows that the novel Ti/PbO2-Sn anodes have higher oxygen evolution overpotential when compared to pure Ti/PbO2 electrode. The performance of electrodes for the electrochemical degradation of a model pollutant (phenol) was enhanced using the Ti/PbO2-Sn anode. The effects of current density, initial pH and supporting electrolyte on the electrochemical degradation of phenol by Ti/PbO2-Sn electrode were investigated. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:193 / 200
页数:8
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