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The effect of electrochemically treated glassy carbon on the activity of supported Pt catalyst in methanol oxidation

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2004
Authors
Jovanović, Vladislava M.
Terzić, Sanja
Tripković, Amalija
Popović, Ksenija
Lović, Jelena
Article (Published version)
,
Elsevier
Metadata
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Abstract
Effect of electrochemical oxidation of glassy carbon on deposition of platinum particles and electrocatalytic activity of platinum supported on oxidized glassy carbon (Pt/GCOX) were studied for methanol oxidation in H2SO4 solution. Platinum was potentiostatically deposited from H2SO4 + H2PtCl6 solution. Glassy carbon was anodically polarised in 0.5 M H2SO4 at 2.25 V vs. saturated calomel electrode (SCE) during 35 s. Electrochemical treatment of GC support, affecting not significantly the real Pt surface area, leads to a better distribution of platinum on the substrate and has remarkable effect on the activity. The activity of the Pt/GCOX electrode for methanol oxidation is larger than polycrystalline Pt and for more than one order of magnitude larger than Pt/GC electrode. This increase in activity indicates the pronounced role of organic residues of GC support on the properties of Pt particles deposited on glassy carbon.
Keywords:
Glass-like carbon / Electrochemical treatment / Catalyst support / Atomic force microscopy / Electrochemical properties
Source:
Electrochemistry Communication, 2004, 6, 12, 1254-1258
Publisher:
  • Elsevier
Projects:
  • Ministry of Science, Technology and Development of the Republic Serbia, Grant No. 1796

DOI: 10.1016/j.elecom.2004.10.001

ISSN: 1388-2481

WoS: 000225157100008

Scopus: 2-s2.0-7544248524
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/2880
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