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Dynamics of electrocatalytic oxidation of ethylene glycol, methanol and formic acid at MWCNT platform electrochemically modified with Pt/Ru nanoparticles

  • University of Pretoria
  • Council for Scientific and Industrial Research
  • University of the Western Cape

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Comparative electrocatalytic behavior of functionalized multiwalled carbon nanotubes (fMWCNTs) electrodecorated with Pt/Ru nanoparticles towards the oxidation of methanol (MeOH), ethylene glycol (EG) and formic acid (FA) has been investigated. The catalytic current density decreased approximately as MeOH≈EG gt; FA. Result revealed that BPPGE-fMWCNT-Pt/Ru tolerates CO poisoning for FA electrooxidation than when used for the oxidation of the EG or MeOH. Electrochemical impedance spectra are dependent on the oxidation potentials, with equivalent circuit models characteristic of adsorption-controlled charge transfer kinetics. The results provide important insights into the electrochemical response of these small organic molecules useful in fuel cell technology.

Original languageEnglish
Pages (from-to)519-529
Number of pages11
JournalElectroanalysis
Volume22
Issue number5
DOIs
Publication statusPublished - Mar 2010

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Adsorption-controlled kinetics
  • Cyclic voltammetry
  • Electrocatalytic oxidation
  • Impedance spectroscopy
  • MWCNT-Pt/Ru nanoparticles
  • Nanoparticles
  • Small organic molecules

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry

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