Preparation and characterization of a novel Ce doped PbO2 electrode based on NiO modified Ti/TiO2NTs substrate for the electrocatalytic degradation of phenol wastewater

被引：93

作者：

Wang, Zhicheng ^{[1
]}

Xu, Mai ^{[2
]}

Wang, Fengwu ^{[2
]}

Liang, Xian ^{[2
]}

Wei, Yijun ^{[2
]}

Hu, Yunhu ^{[2
]}

Zhu, Chuan Gao ^{[2
]}

Fang, Wenyan ^{[2
]}

机构：

[1] Anhui Univ Sci & Technol, Sch Chem Engn, Huainan 232001, Anhui, Peoples R China

[2] Huainan Normal Univ, Sch Chem & Mat Engn, Dongshan Rd West, Huainan 232038, Anhui, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2017年 / 247卷

基金：

中国国家自然科学基金;

关键词：

Modification; Electrochemical degradation; Ti/TiO2NTs/NiO/Ce-PbO2; anode; Phenol; ELECTROCHEMICAL DEGRADATION; AQUEOUS-SOLUTION; NANOTUBE ARRAYS; THIN-FILM; ANODE; OXIDATION; TIO2; FABRICATION; ACID; EVOLUTION;

D O I：

10.1016/j.electacta.2017.07.057

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel of Ti/TiO2NTs/NiO/Ce-PbO2 electrode was constructed by electrodeposition technique. Characterization experiments including scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD), cyclic voltammetry (CV), linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) were performed to evaluate the performance of Ti/TiO2NTs/NiO/Ce-PbO2 electrode. The results show that, compared with the Ti/TiO2NTs/PbO2 and Ti/TiO2NTs/Ce-PbO2 electrode, the novel Ti/TiO2NTs/NiO/Ce-PbO2 electrode with more compact surface and a fine grain size possessed smaller charge transfer resistance and higher oxygen evolution potential. The Ti/TiO2NTs/NiO/Ce-PbO2 had higher electrochemical activity than those of other three kinds of electrodes due to the larger electrochemical active surface area. Phenol was employed as a model organic pollutant for electrochemical degradation to evaluate the electrocatalytic activity of the novel Ti/TiO2NTs/NiO/Ce-PbO2 electrode. The removal efficiency of phenol and TOC reached 100.0% and 98.1% respectively after 180 min under the optimal conditions. In addition, the degradation of phenol followed pseudo-first-order kinetics. The results demonstrated that the Ti/TiO2NTs/NiO/Ce-PbO2 with enhanced electrochemical performance is a promising material for degrading organic pollutants. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：535 / 547

页数：13

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