不同掺杂元素的钛基PbO2电极对苯酚电催化氧化性能的影响

doi:10.61558/2993-074X.2098

电化学（中英文） ›› 2013, Vol. 19 ›› Issue (1): 59-64. doi: 10.61558/2993-074X.2098

• 电化学材料基础与表界面研究专辑（中国科学院化学研究所万立骏院士主编） • 上一篇下一篇

不同掺杂元素的钛基PbO₂电极对苯酚电催化氧化性能的影响

刘晓蕾¹，丹媛媛²，陆海彦¹，林海波^1,3*，欧阳明丽¹，袁传军¹

1. 吉林大学化学学院，吉林长春 130012； 2. 江苏科技大学生物与化学工程学院，江苏镇江 212003； 3. 吉林大学环境与资源学院，吉林长春 130012

收稿日期:2012-06-04 修回日期:2012-06-30 出版日期:2013-02-28 发布日期:2012-07-05
通讯作者: 林海波 E-mail:lhb910@jlu.edu.cn
基金资助:
国家自然科学基金（No.20873051）和吉林省科技发展计划重点项目（No.20100326）资助

Effect of Ti/PbO₂ Electrodes Doped with Different Elements on Electrocatalytic Oxidation Characteristics of Phenol

LIU Xiao-lei¹, DAN Yuan-yuan², LU Hai-yan¹, LIN Hai-bo^1,3*, Ouyang Ming-li¹, YUN Chuan-jun¹

1. College of Chemistry, Jilin University, Changchun?130012, Jilin, China; 2. College of Biological and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang?212003, Jiangsu, China; 3. College of Environmental and Resource Sciences, Jilin University, Changchun?130012, Jilin, China

Received:2012-06-04 Revised:2012-06-30 Published:2013-02-28 Online:2012-07-05
Contact: LIN Hai-bo E-mail:lhb910@jlu.edu.cn

摘要/Abstract

摘要： 本文在SnO₂-Sb₂O₅氧化物为中间层的钛基体上，采用电沉积法制备了无掺杂的Ti/PbO₂、掺杂F的Ti/PbO₂（Ti/PbO₂+F）和掺杂纳米Co₃O₄粒子的Ti/PbO₂电极（Ti/PbO₂+Nano-Co₃O₄）. 用X射线衍射（XRD）和扫描电镜（SEM）分析和观察了电极材料的组成、结构和形貌，并通过电化学方法研究了这三种电极对苯酚的电催化氧化性能. 结果表明，Ti/PbO₂+F电极的析氧电位较Ti/PbO₂电极的发生明显正移，但其苯酚的氧化峰和析氧峰并不能分开；而Ti/PbO₂+Nano-Co₃O₄电极虽然其析氧电位负移，但对苯酚的氧化峰出现在析氧峰之前. 这一结果表明，体系存在着某种反应特别快的瞬态中间体，即在水分子被解离之前已与苯酚发生了反应，从而更有利于苯酚的转化和降解.

关键词: PbO₂, 电极, 掺杂, 电催化氧化, 苯酚

Abstract: Three types of electrodes, namely, Ti/PbO₂, F-doped PbO₂ (Ti/PbO₂-F) and nano-Co₃O₄-doped PbO₂ (Ti/PbO₂+Nano-Co₃O₄) electrodes, were prepared by electro-deposition method on the Ti substrate with the interlayer of SnO₂-Sb₂O₅. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to study the compositions, structures and film morphologies of the electrodes. Electrocatalytic oxidation characteristics to phenol on the prepared electrodes were investigated by electrochemical method. The experimental results showed that compared with the Ti/PbO₂ electrode, the potentials of oxygen evolution on the Ti/PbO₂+F electrode apparently shifted more positively, while those of Ti/PbO₂+Nano-Co₃O₄electrode shifted negatively after the oxidation of phenol took place. This provided experimental evidence for the existence of some transient intermediates which underwent particularly fast reactions, i.e., the reaction of water molecule with phenol occurred before the dissociation of water molecule, which was more beneficial to the transformation and degradation of phenol.

Key words: PbO₂, electrode, doped, electrocatalytic oxidation, phenol

中图分类号:

O646

刘晓蕾, 丹媛媛, 陆海彦, 林海波, 欧阳明丽, 袁传军. 不同掺杂元素的钛基PbO₂电极对苯酚电催化氧化性能的影响[J]. 电化学（中英文）, 2013, 19(1): 59-64.

LIU Xiao-lei, DAN Yuan-yuan, LU Hai-yan, LIN Hai-bo, Ouyang Ming-li, YUN Chuan-jun. Effect of Ti/PbO₂ Electrodes Doped with Different Elements on Electrocatalytic Oxidation Characteristics of Phenol[J]. Journal of Electrochemistry, 2013, 19(1): 59-64.

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https://electrochem.xmu.edu.cn/CN/Y2013/V19/I1/59

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不同掺杂元素的钛基PbO₂电极对苯酚电催化氧化性能的影响

Effect of Ti/PbO₂ Electrodes Doped with Different Elements on Electrocatalytic Oxidation Characteristics of Phenol

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