Title : ( Electrocatalytic Oxidation of Ethanol on Glassy Carbon Electrode Modified by Platinum Nanoparticles Dispersed into MMT/PANI/CS Composite Films )
Authors: masoomeh paydar , Gholam hossein Ronaghi , Mohammad Hossein Arbab Zavar , Iman Razavipanah , Parisa Mirhosseini Moosavi ,
Full TextAbstract
In this research work, montmorillonite/polyaniline/chitosan/platinum (MMT/PANI/CS/Pt) nanocomposite is used as an effective and novel catalyst for electrooxidation of ethanol. The glassy carbon electrode surface is coated with MMT/PANI and chitosan by applying a constant potential. Thereafter, the surface of the GCE is potentiostatically coated with platinum nanoparticles. The constructed electrode is referred to as: GCE/MMT/PANI/CS/Pt. The electrooxidation of ethanol molecules on the surface of MMT/PANI/CS/Pt electrode is studied using various electrochemical methods such as cyclic voltammetry, chronoamperometry and electrochemical impedance spectroscopy (EIS). The experimental results, indicate that the GCE/MMT/PANI/CS/Pt electrode possess a higher catalytic activity for ethanol electrooxidation compared to the GCE/Pt electrode. The Tafel plots indicate a better kinetic for ethanol electrooxidation in the presence of MMT/PANI/CS. The effect of various parameters on electrocatalytic oxidation of the ethanol molecules, such as the amount of platinum nanoparticles, MMT/PANI and ethanol concentration on the modified electrodes is investigated for electrooxidation of ethanol molecules using the GCE/MMT/PANI/CS/Pt electrode. The optimum conditions are obtained with 0.011 mg cm-2 Pt nanoparticle, 0.08 w/v% MMT/PANI and 1 M ethanol.
Keywords
, Electrooxidition, Ethanol, Montmorillonite natural clay, PANI conducting polymer, Tafel study
@article{paperid:1085579,
author = {Paydar, Masoomeh and Ronaghi, Gholam Hossein and Arbab Zavar, Mohammad Hossein and Razavipanah, Iman and Mirhosseini Moosavi, Parisa},
title = {Electrocatalytic Oxidation of Ethanol on Glassy Carbon Electrode Modified by Platinum Nanoparticles Dispersed into MMT/PANI/CS Composite Films},
journal = {Analytical and Bioanalytical Electrochemistry},
year = {2019},
volume = {11},
number = {11},
month = {December},
issn = {2008-4226},
pages = {1559--1574},
numpages = {15},
keywords = {Electrooxidition; Ethanol; Montmorillonite natural clay; PANI conducting polymer; Tafel study},
}
%0 Journal Article
%T Electrocatalytic Oxidation of Ethanol on Glassy Carbon Electrode Modified by Platinum Nanoparticles Dispersed into MMT/PANI/CS Composite Films
%A Paydar, Masoomeh
%A Ronaghi, Gholam Hossein
%A Arbab Zavar, Mohammad Hossein
%A Razavipanah, Iman
%A Mirhosseini Moosavi, Parisa
%J Analytical and Bioanalytical Electrochemistry
%@ 2008-4226
%D 2019
