Preparation of Ti/PTFE-F-PbO2 Electrode with a Long Life from the Sulfamic Acid Bath and Its Application in Organic Degradation

›› 2011, Vol. 19 ›› Issue (6): 1033-1038.

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Preparation of Ti/PTFE-F-PbO₂ Electrode with a Long Life from the Sulfamic Acid Bath and Its Application in Organic Degradation

HONG Xiaping, ZHANG Rong, TONG Shaoping, MA Chun’an

College of Chemical Engineering and Materials Science, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China

Received:2010-11-09 Revised:2011-09-09 Online:2012-04-24 Published:2011-12-28
Supported by:
Supported by the National Natural Science Foundation of China (20406019, 20876151)

Preparation of Ti/PTFE-F-PbO₂ Electrode with a Long Life from the Sulfamic Acid Bath and Its Application in Organic Degradation

洪夏萍, 张蓉, 童少平, 马淳安

College of Chemical Engineering and Materials Science, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China

通讯作者: TONG Shaoping, E-mail: sptong@zjut.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China (20406019, 20876151)

Abstract

Abstract: A polytetrafluoroethylene (PTFE)-doped PbO₂ electrode on a Ti substrate was prepared by galvanostatic method from the sulfamic acid bath (Ti/PTFE-F-PbO₂-I) or nitric acid bath (Ti/PTFE-F-PbO₂-II). Scanning Electron Microscopy revealed that the Ti/PTFE-PbO₂-I electrode had a more regular morphology with smaller size crystals than the Ti/PTFE-F-PbO₂-II electrode. On the basis of the results of both the accelerated electrolysis test and the empirical formula for estimating the service life of an electrode, the service life of the Ti/PTFE-PbO₂-I electrode was predicted to be more than 7 years under conventional electrolysis conditions (0.1 A·cm^-2). During the treatment of 4-chlorophenol- contaminated water, the Ti/PTFE-PbO₂-I anode showed both a good electro-catalytic activity and high electrochemical stability, exhibiting an excellent potential application.

Key words: lead dioxide, sulfamic acid, electrochemical oxidation, 4-chlorophenol

摘要： A polytetrafluoroethylene (PTFE)-doped PbO₂ electrode on a Ti substrate was prepared by galvanostatic method from the sulfamic acid bath (Ti/PTFE-F-PbO₂-I) or nitric acid bath (Ti/PTFE-F-PbO₂-II). Scanning Electron Microscopy revealed that the Ti/PTFE-PbO₂-I electrode had a more regular morphology with smaller size crystals than the Ti/PTFE-F-PbO₂-II electrode. On the basis of the results of both the accelerated electrolysis test and the empirical formula for estimating the service life of an electrode, the service life of the Ti/PTFE-PbO₂-I electrode was predicted to be more than 7 years under conventional electrolysis conditions (0.1 A·cm^-2). During the treatment of 4-chlorophenol- contaminated water, the Ti/PTFE-PbO₂-I anode showed both a good electro-catalytic activity and high electrochemical stability, exhibiting an excellent potential application.

关键词: lead dioxide, sulfamic acid, electrochemical oxidation, 4-chlorophenol

HONG Xiaping, ZHANG Rong, TONG Shaoping, MA Chun’an. Preparation of Ti/PTFE-F-PbO₂ Electrode with a Long Life from the Sulfamic Acid Bath and Its Application in Organic Degradation[J]. , 2011, 19(6): 1033-1038.

洪夏萍, 张蓉, 童少平, 马淳安. Preparation of Ti/PTFE-F-PbO₂ Electrode with a Long Life from the Sulfamic Acid Bath and Its Application in Organic Degradation[J]. , 2011, 19(6): 1033-1038.

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Preparation of Ti/PTFE-F-PbO₂ Electrode with a Long Life from the Sulfamic Acid Bath and Its Application in Organic Degradation

Preparation of Ti/PTFE-F-PbO₂ Electrode with a Long Life from the Sulfamic Acid Bath and Its Application in Organic Degradation

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