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Effect of chemisorbed carbon monoxide on Pt/C electrode on the mechanism of the hydrogen oxidation reaction
dc.creator | Elezović, Nevenka R. | |
dc.creator | Gajić-Krstajić, Ljiljana M | |
dc.creator | Radmilović, Velimir R | |
dc.creator | Vračar, Ljiljana M | |
dc.creator | Krstajić, Nedeljko V | |
dc.date.accessioned | 2022-04-05T14:20:01Z | |
dc.date.available | 2022-04-05T14:20:01Z | |
dc.date.issued | 2009 | |
dc.identifier.issn | 0013-4686 | |
dc.identifier.uri | http://rimsi.imsi.bg.ac.rs/handle/123456789/322 | |
dc.description.abstract | The influence of poisoning of Pt catalyst by CO on the kinetics and mechanism of H-2 oxidation reaction (HOR) at Pt/C electrode in 0.5 mol dm(-3) HClO4, saturated with H-2 containing 100 ppm CO, was examined with rotating disc electrode (RDE) at 22 degrees C. Commercial carbon black, Vulcan XC-72 was used as support, while Pt/C catalyst was prepared by modified polyol synthesis method in an ethylene glycol (EG) solution. The kinetically controlled current (l(k)) for the HOR at Pt/C decreases significantly at CO coverage (Theta(co)) > 0.6. For Theta(co) lt 0.6 the HOR takes place through Tafel-Volmer mechanism with Tafel reaction as rate-determining step at the low CO coverage, while Volmer step controls the overall reaction rate at the medium CO coverage. When CO coverage is higher then 0.6, Heyrovsky-Volmer mechanism is operative for the HOR with Heyrovsky as the rate-determining step (rds). | en |
dc.publisher | Pergamon-Elsevier Science Ltd, Oxford | |
dc.relation | info:eu-repo/grantAgreement/MESTD/MPN2006-2010/142038/RS// | |
dc.rights | restrictedAccess | |
dc.source | Electrochimica Acta | |
dc.subject | RDE | en |
dc.subject | Pt nanosized catalyst | en |
dc.subject | Mechanism | en |
dc.subject | Hydrogen oxidation | en |
dc.subject | CO adsorption | en |
dc.title | Effect of chemisorbed carbon monoxide on Pt/C electrode on the mechanism of the hydrogen oxidation reaction | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 1382 | |
dc.citation.issue | 4 | |
dc.citation.other | 54(4): 1375-1382 | |
dc.citation.rank | M21 | |
dc.citation.spage | 1375 | |
dc.citation.volume | 54 | |
dc.identifier.doi | 10.1016/j.electacta.2008.08.067 | |
dc.identifier.scopus | 2-s2.0-57749182921 | |
dc.identifier.wos | 000262810900031 | |
dc.type.version | publishedVersion |