Cyclic voltammetry as a tool for model testing of catalytic Pt- and Ag-doped carbon microspheres

Marjan Rancrossed D Signelović, Milan Momčilović, Branko Matović, Biljana Babić, Jiří Barek

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This paper deals with comparison of modified carbon electrodes prepared from Pt- and Ag-doped carbon microspheres using cyclic voltammetry of [Fe(CN)6]3 -/[Fe(CN)6]4 - redox pair as a probe under various experimental conditions. Spherical particles ranging from 0.5 to 8 μm in average as evidenced by SEM showed slight influence of dopant nature onto their microstructure. FTIR analysis revealed that the involvement of metal species in the carbon structure was followed by their subsequent reduction and rising of oxidized carbon functionalities in the spectra. Electrochemical study showed that all the examined electrodes performed reversible processes with chemically stable generated products and no side chemical reactions. Among them, Pt-doped electrode showed superior electrocatalytic behavior in terms of heterogeneous transfer rate constant and other kinetic parameters. Since minimal addition of Pt in the hydrothermal synthesis resulted in powerful electrocatalytic effect as precious advantage, benevolent impact of carbon microspheres as catalyst support was put into focus of this research.

Original languageEnglish
Pages (from-to)176-182
Number of pages7
JournalJournal of Electroanalytical Chemistry
Volume757
DOIs
Publication statusPublished - 15 Nov 2015
Externally publishedYes

Fingerprint

Microspheres
Cyclic voltammetry
Carbon
Testing
Electrodes
Hydrothermal synthesis
Kinetic parameters
Catalyst supports
Chemical reactions
Rate constants
Metals
Doping (additives)
Microstructure
Scanning electron microscopy

Keywords

  • Carbon microspheres
  • Cyclic voltammetry
  • Doping
  • Electrocatalysis

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

Cite this

Cyclic voltammetry as a tool for model testing of catalytic Pt- and Ag-doped carbon microspheres. / Rancrossed D Signelović, Marjan; Momčilović, Milan; Matović, Branko; Babić, Biljana; Barek, Jiří.

In: Journal of Electroanalytical Chemistry, Vol. 757, 15.11.2015, p. 176-182.

Research output: Contribution to journalArticle

Rancrossed D Signelović, Marjan ; Momčilović, Milan ; Matović, Branko ; Babić, Biljana ; Barek, Jiří. / Cyclic voltammetry as a tool for model testing of catalytic Pt- and Ag-doped carbon microspheres. In: Journal of Electroanalytical Chemistry. 2015 ; Vol. 757. pp. 176-182.
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