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Fabrication and characterization of PbO2 electrode modified with [Fe(CN)6](3-) and its application on electrochemical degradation of alkali lignin.
Hao, Xu; Quansheng, Yuan; Dan, Shao; Honghui, Yang; Jidong, Liang; Jiangtao, Feng; Wei, Yan.
Afiliación
  • Hao X; Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China. Electronic address: fjtes@mail.xjtu.edu.cn.
  • Quansheng Y; Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
  • Dan S; Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
  • Honghui Y; Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China; The State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
  • Jidong L; Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
  • Jiangtao F; Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
  • Wei Y; Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China; The State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China. Electronic address: yanwei@mail.xjtu.edu.cn.
J Hazard Mater ; 286: 509-16, 2015 Apr 09.
Article en En | MEDLINE | ID: mdl-25603300
PbO2 electrode modified by [Fe(CN)6](3-) (marked as FeCN-PbO2) was prepared by electro-deposition method and used for the electrochemical degradation of alkali lignin (AL). The surface morphology and the structure of the electrodes were characterized by scanning electronic microscopy (SEM) and X-ray diffraction (XRD), respectively. The stability and electrochemical activity of FeCN-PbO2 electrode were characterized by accelerated life test, linear sweep voltammetry, electrochemical impedance spectrum (EIS) and AL degradation. The results showed that [Fe(CN)6](3-) increased the average grain size of PbO2 and formed a compact surface coating. The service lifetime of FeCN-PbO2 electrode was 287.25 h, which was longer than that of the unmodified PbO2 electrode (100.5h). The FeCN-PbO2 electrode showed higher active surface area and higher oxygen evolution potential than that of the unmodified PbO2 electrode. In electrochemical degradation tests, the apparent kinetics coefficient of FeCN-PbO2 electrode was 0.00609 min(-1), which was higher than that of unmodified PbO2 electrode (0.00419 min(-1)). The effects of experimental parameters, such as applied current density, initial AL concentration, initial pH value and solution temperature, on electrochemical degradation of AL by FeCN-PbO2 electrode were evaluated.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Óxidos / Contaminantes Químicos del Agua / Ferricianuros / Plomo / Lignina Idioma: En Revista: J Hazard Mater Asunto de la revista: SAUDE AMBIENTAL Año: 2015 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Óxidos / Contaminantes Químicos del Agua / Ferricianuros / Plomo / Lignina Idioma: En Revista: J Hazard Mater Asunto de la revista: SAUDE AMBIENTAL Año: 2015 Tipo del documento: Article Pais de publicación: Países Bajos