Electrochemical Performances of Neodymium Doped Lead Dioxide Composite Anode

Authors

Hong-hui WANG, Key Laboratory of Estuarine Ecological Security and Environmental Health, Fujian Province University; School of Environmental Science and Engineering, Xiamen University Tan Kah Kee College, Zhangzhou 363105, Fujian, China;Follow
Ming-jie MA, Key Laboratory of Estuarine Ecological Security and Environmental Health, Fujian Province University; School of Environmental Science and Engineering, Xiamen University Tan Kah Kee College, Zhangzhou 363105, Fujian, China;College of the Environment and Ecology, Xiamen University, Xiamen 361005, Fujian, China;
Jie FENG, Key Laboratory of Estuarine Ecological Security and Environmental Health, Fujian Province University; School of Environmental Science and Engineering, Xiamen University Tan Kah Kee College, Zhangzhou 363105, Fujian, China;
Huang-ya KANG, Key Laboratory of Estuarine Ecological Security and Environmental Health, Fujian Province University; School of Environmental Science and Engineering, Xiamen University Tan Kah Kee College, Zhangzhou 363105, Fujian, China;
Wen-jie HUANG, Key Laboratory of Estuarine Ecological Security and Environmental Health, Fujian Province University; School of Environmental Science and Engineering, Xiamen University Tan Kah Kee College, Zhangzhou 363105, Fujian, China;

Corresponding Author

Hong-hui WANG(whhui2006@163.com)

Abstract

Neodymium (Nd) doped titanium (Ti)-based lead dioxide (PbO₂) composite anode was prepared by electrodeposition. The surface morphologies and crystal structures of the as-prepared anodes were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD) technique, respectively. The electrochemical performances of PbO₂-Nd anode were studied by electrochemical impedance spectroscopy, linear sweep voltammetry and cyclic voltammetry. Additionally, the electrocatalytic activity and durability of PbO₂-Nd anode were investigated through the degradation of simulative refractory organic wastewater of phenol. The results showed that Nd doping made the PbO₂ anode surface structure dense and uniform with smaller sized crystal particles, which increased the specific surface area and improved the electrochemical properties of the anode. The surface crystal structures of PbO₂ and PbO₂-Nd anodes were mainly composed of β-PbO₂. Furtheremore, Nd doping improved the crystal purity of β-PbO₂, changed the relative abundance of the surface phase and promoted the formation of β(101) crystal plane. Moreover, the PbO₂-Nd anode exhibited smaller electrochemical reaction resistance, higher oxygen evolution potential, stronger electron exchange capacity and longer life time than PbO₂ anode. Upon electrocatalytic degradation of phenol wastewater with the PbO₂-Nd anode for
3 h, the removal rate of phenol and COD reached 85.7% and 73.8%, respectively. The electrocatalytic activity of the PbO₂-Nd anode had no significant attenuation after being used for 6 times. The PbO₂-Nd anode possessed better electrocatalytic activity and durability than PbO₂ anode.

Graphical Abstract

Keywords

PbO2-Nd anode, electrochemical performance, electrocatalytic activity, durability

DOI Link

https://doi.org/10.13208/j.electrochem.180411

Publication Date

2018-08-28

Online Available Date

2018-05-23

Revised Date

2018-05-02

Received Date

2018-04-11

Recommended Citation

Hong-hui WANG, Ming-jie MA, Jie FENG, Huang-ya KANG, Wen-jie HUANG. Electrochemical Performances of Neodymium Doped Lead Dioxide Composite Anode[J]. Journal of Electrochemistry, 2018 , 24(4): 367-374.
DOI: 10.13208/j.electrochem.180411
Available at: https://jelectrochem.xmu.edu.cn/journal/vol24/iss4/8

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