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 language | English |
|---|---|
| Pages (from-to) | 176-182 |
| Number of pages | 7 |
| Journal | Journal of Electroanalytical Chemistry |
| Volume | 757 |
| DOIs | |
| Publication status | Published - 15 Nov 2015 |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - Cyclic voltammetry as a tool for model testing of catalytic Pt- and Ag-doped carbon microspheres
AU - Rancrossed D Signelović, Marjan
AU - Momčilović, Milan
AU - Matović, Branko
AU - Babić, Biljana
AU - Barek, Jiří
PY - 2015/11/15
Y1 - 2015/11/15
N2 - 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.
AB - 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.
KW - Carbon microspheres
KW - Cyclic voltammetry
KW - Doping
KW - Electrocatalysis
UR - http://www.scopus.com/inward/record.url?scp=84943391293&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84943391293&partnerID=8YFLogxK
U2 - 10.1016/j.jelechem.2015.09.035
DO - 10.1016/j.jelechem.2015.09.035
M3 - Article
VL - 757
SP - 176
EP - 182
JO - Journal of Electroanalytical Chemistry
JF - Journal of Electroanalytical Chemistry
SN - 0022-0728
ER -