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Electrochemical preparation of effective and low cost catalyst for electrooxidation of ethanol

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Abstract

A nanocatalyst coating was prepared at surface of a glassy carbon electrode by electropolymerization of pyrrole by cycling the electrode potential between −0.8 and 0.8 V (vs. Ag/AgCl). Then, polypyrrole film was potentiostatically coated with platinum nanoparticles at constant potential of −0.2 V (vs. Ag/AgCl). The resulting electrode was denoted as GCE/PPy/Pt. This modified electrode was characterized by IR, SEM, TEM and EDX. The electrocatalytic oxidation of ethanol at the GCE/PPy/Pt has been investigated using cyclic voltammetric and chronoamperometric methods. The effects of various parameters on electrocatalytic oxidation of the ethanol, such as the thickness of PPy film, the amount of platinum nanoparticles, ethanol concentration, potential scan rate and working potential limit in anodic direction, were investigated. The kinetic of the ethanol oxidation is discussed on the GCE/PPy/Pt. The stability and reproducibility of this modified electrode were also studied.

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Acknowledgments

The authors gratefully acknowledge the support of this work by Ferdowsi University of Mashhad, Mashhad, Iran.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran

    Iman Razavipanah, Gholam Hossein Rounaghi & Mohammad Hossien Arbab Zavvar

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  1. Iman Razavipanah
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  2. Gholam Hossein Rounaghi
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  3. Mohammad Hossien Arbab Zavvar
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Correspondence to Gholam Hossein Rounaghi.

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Razavipanah, I., Rounaghi, G.H. & Zavvar, M.H.A. Electrochemical preparation of effective and low cost catalyst for electrooxidation of ethanol. J IRAN CHEM SOC 10, 1279–1289 (2013). https://doi.org/10.1007/s13738-013-0264-y

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