Fabrication of cerium-doped lead dioxide anode with improved electrocatalytic activity and its application for removal of Rhodamine B

被引：68

作者：

Li, Qin ^{[1
]}

Zhang, Qiu ^{[1
]}

Cui, Hao ^{[1
]}

Ding, Liang ^{[1
]}

Wei, Zhongbo ^{[1
]}

Zhai, Jianping ^{[1
]}

机构：

[1] Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210093, Jiangsu, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2013年 / 228卷

基金：

高等学校博士学科点专项科研基金;

关键词：

Cerium; Lead dioxide; Rhodamine B; Electrocatalytic oxidation; Wastewater treatment; ELECTROCHEMICAL DEGRADATION; WASTE-WATER; AQUEOUS-SOLUTION; TIO2; NANOTUBES; PBO2; ELECTRODE; OXIDATION; PHENOL; TRANSFORMATION; PRODUCTS; BENZENE;

D O I：

10.1016/j.cej.2013.05.064

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The electrochemical properties of a titanium dioxide nanotubes/cerium-doped lead dioxide (TiO2-NTs/Ce-PbO2) anode and its removal of Rhodamine B (RhB) from aqueous solution were investigated. Cerium doping content and electrodeposition time were optimized to get the highest electrocatalytic activity. Scanning electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy were used to characterize the morphology, crystal structure and elemental states of the modified anode. The accelerated life test and linear sweep voltammetry indicated that TiO2-NTs/Ce-PbO2 possessed 2.3 times longer accelerated service life and higher oxygen evolution potential than TiO2-NTs/PbO2. The removal of RhB by TiO2-NTs/Ce-PbO2 anode was investigated under different conditions. It was found that a higher current density, acidic or quasi-neutral solution and the presence of chloride ions promoted the removal efficiency of RhB. The good electrocatalytic performance of TiO2-NTs/Ce-PbO2 makes it a promising anode for treatment of organic pollutants in aqueous solution. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：806 / 814

页数：9

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