Facile preparation of a Ti/α-PbO2/β-PbO2 electrode for theelectrochemical degradation of 2-chlorophenol

doi:10.1016/S1872-2067(15)60851-8

Chinese Journal of Catalysis ›› 2015, Vol. 36 ›› Issue (7): 975-981.DOI: 10.1016/S1872-2067(15)60851-8

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Facile preparation of a Ti/α-PbO₂/β-PbO₂ electrode for theelectrochemical degradation of 2-chlorophenol

Qianli Zhang, Xinyan Guo, Xiaodan Cao, Dongtian Wang, Jie Wei

College of Chemistry and Material Engineering, Jiangsu Key Laboratory for Environment Functional Materials, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China

Received:2015-01-08 Revised:2015-03-27 Online:2015-06-12 Published:2015-07-30
Supported by:
This work was supported by the National Natural Science Foundation of China (251178283, 20905055), the Six-Field Talent Peak Program of Jiangsu Province, and the Graduate Research and Innovation Plan of Jiangsu Province (SJLX_0580).

Abstract

Abstract:

A Ti/α-PbO₂/β-PbO₂ electrode with high stability was prepared and examined toward the electrochemical degradation of 2-chlorophenol. Scanning electron microscopy analysis revealed that Ti/α-PbO₂/β-PbO₂ had a cauliflower morphology comprising small β-PbO₂ crystals. The 2-chlorophenol removal rate using the Ti/α-PbO₂/β-PbO₂ electrode was 100% after 180 min of electrolysis under optimal conditions, which were selected based on the orthogonal test method, i.e., initial concentration of 2-cholorophenol = 50 mg/L, concentration of Na₂SO₄ = 0.1 mol/L, temperature = 35 ℃, and anode current density = 20 mA/cm². Kinetic analyses demonstrated that the electrochemical oxidation of 2-chlorophenol on the Ti/α-PbO₂/β-PbO₂ electrode followed pseudo-first order kinetics.

Key words: Electrochemical degradation, 2-Chlorophenol, β-PbO₂ electrode, α-PbO₂ interlayer, Kinetic analysis

Qianli Zhang, Xinyan Guo, Xiaodan Cao, Dongtian Wang, Jie Wei. Facile preparation of a Ti/α-PbO₂/β-PbO₂ electrode for theelectrochemical degradation of 2-chlorophenol[J]. Chinese Journal of Catalysis, 2015, 36(7): 975-981.

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Facile preparation of a Ti/α-PbO₂/β-PbO₂ electrode for theelectrochemical degradation of 2-chlorophenol

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