ZrO2掺杂铌基二氧化铅电极制备及其甲基橙降解电催化性能

doi:10.13208/j.electrochem.141028

电化学（中英文） ›› 2015, Vol. 21 ›› Issue (3): 294-298. doi: 10.13208/j.electrochem.141028

ZrO₂掺杂铌基二氧化铅电极制备及其甲基橙降解电催化性能

张力，董文燕，杨太来，梁镇海^*

太原理工大学化学化工学院，山西太原 030024

收稿日期:2014-10-28 修回日期:2015-01-12 出版日期:2015-06-28 发布日期:2015-06-28
通讯作者: 梁镇海 E-mail:liangzhenhai@tyut.edu.cn
基金资助:
国家自然科学基金委员会和神华集团有限责任公司联合项目（No. U1261103）资助

Preparation of ZrO₂-Doped Nb/PbO₂ Electrode and Electrocatalytic Performance of Methyl Orange Degradation

ZHANG Li, DONG Wen-yan, YANG Tai-lai, LIANG Zhen-hai^*

College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Received:2014-10-28 Revised:2015-01-12 Published:2015-06-28 Online:2015-06-28
Contact: LIANG Zhen-hai E-mail:liangzhenhai@tyut.edu.cn

摘要/Abstract

摘要： 本文利用电沉积制得ZrO₂掺杂铌基二氧化铅电极，通过扫描电镜（SEM）和X射线衍射（XRD）观察表征了Nb/ZrO₂+PbO₂电极表面形貌特征及组成. 用线性伏安曲线、电化学交流阻抗和循环伏安曲线测试了Nb/ZrO₂+PbO₂电极电化学性能，及其甲基橙（MO）的降解电催化效果. 结果表明，ZrO₂掺杂使Nb/PbO₂电极表面更致密、粗糙，结晶尺寸更小，增大了电极比表面积，提高了电极电催化活性. Nb/ZrO₂+PbO₂电极活性层主要由β-PbO₂和少量的α-PbO₂以及部分ZrO₂共沉积而成. 有较高的析氧电位、吸附电容和较低的电荷转移电阻，其甲基橙（MO）降解电催化活性更佳，降解过程受扩散控制.

关键词: ZrO₂, 铌基二氧化铅, 电催化活性, 甲基橙

Abstract: The zirconium oxide (ZrO₂)-doped niobium based lead oxide (Nb/PbO₂) electrode was prepared by electrodeposition. The microstructures and electrochemical properties of Nb/ZrO₂+PbO₂ electrode were investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD), linear sweep voltammetry, electrochemical impedance spectroscopy and cyclic voltammotry. In addition, the Nb/PbO₂ electrode was used as an anode for the electrochemical degradation of methyl orange (MO). Results revealed that the ZrO₂ doping made the Nb/PbO2 electrode surface denser and rougher with smaller sized crystal particles, which increased the specific surface area and enhanced the electrocatalytic activity of the electrode. The Nb/ZrO₂+PbO₂ electrode was mainly composed of β-PbO₂ with a small amount of α-PbO₂ and ZrO₂ formed by codeposition. Accordingly, the Nb/ZrO₂+PbO₂ electrode possessed higher oxygen-evolution potential, larger adsorption capacity and lower charge-transfer resistance, as well as higher electrocatalytic activity in the degradation of organic materials than the Nb/PbO₂ electrode. The MO degradation processes were irreversible and controlled by diffusion.

Key words: ZrO₂, niobium-base lead dioxide, electro-catalytic activity, methyl orange

中图分类号:

O646

张力, 董文燕, 杨太来, 梁镇海. ZrO₂掺杂铌基二氧化铅电极制备及其甲基橙降解电催化性能[J]. 电化学（中英文）, 2015, 21(3): 294-298.

ZHANG Li, DONG Wen-yan, YANG Tai-lai, LIANG Zhen-hai. Preparation of ZrO₂-Doped Nb/PbO₂ Electrode and Electrocatalytic Performance of Methyl Orange Degradation[J]. Journal of Electrochemistry, 2015, 21(3): 294-298.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.13208/j.electrochem.141028

https://electrochem.xmu.edu.cn/CN/Y2015/V21/I3/294

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ZrO₂掺杂铌基二氧化铅电极制备及其甲基橙降解电催化性能

Preparation of ZrO₂-Doped Nb/PbO₂ Electrode and Electrocatalytic Performance of Methyl Orange Degradation

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