Electrochemical Oxidation of 4-Chlorophenol Over a Carbon Paste Electrode Modified with ZnAl Layered Double Hydroxides

Authors

  • Daniel Hernández-Fuerte Universidad Autónoma Metropolitana-Azcapotzalco
  • Manuel Palomar-Pardavé Universidad Autónoma Metropolitana-Azcapotzalco
  • Teresa de Jesús Licona-Sánchez Universidad Autónoma Metropolitana-Azcapotzalco
  • Mario Romero- Romo Universidad Autónoma Metropolitana-Azcapotzalco
  • Jaime S. Valente Instituto Mexicano del Petróleo

DOI:

https://doi.org/10.29356/jmcs.v58i3.142

Keywords:

4-chlorophenol, cyclic voltammetry, carbon paste electrode, ZnAl layered double hydroxides, pH

Abstract

A study is presented on the electrochemical oxidation of 4-chlorophenol (4cp) in aqueous solution using a bare carbon paste electrode, CPE, and another one that was modified with ZnAl layered double hydroxides (CPE/ZnAl-LDH). The electro-oxidation was effected at pH values ranging from 3 up to 11. It was found through cyclic voltammetry that this process was irreversible, namely, there were no reduction peaks, and that depending on the nature of the electrode, the anodic current was limited either by adsorption (CPE) or diffusion (CPE/ZnAl-LDH). The energy required and the oxidation reaction rate depended on the pH and on the nature of the electrode, such that the greater rates were obtained when the CPE/ZnAl-LDH electrode and acid pHs were used.

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Author Biographies

Daniel Hernández-Fuerte, Universidad Autónoma Metropolitana-Azcapotzalco

Departamento de Materiales

Manuel Palomar-Pardavé, Universidad Autónoma Metropolitana-Azcapotzalco

Departamento de Materiales

Teresa de Jesús Licona-Sánchez, Universidad Autónoma Metropolitana-Azcapotzalco

Departamento de Materiales

Mario Romero- Romo, Universidad Autónoma Metropolitana-Azcapotzalco

Departamento de Materiales

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Published

2017-10-12

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