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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 | |
dc.creator | Radmilović, Velimir R. | |
dc.creator | Vračar, Ljiljana | |
dc.creator | Krstajić, Nedeljko | |
dc.date.accessioned | 2018-07-06T17:51:20Z | |
dc.date.available | 2018-07-06T17:51:20Z | |
dc.date.issued | 2009 | |
dc.identifier.issn | 0013-4686 | |
dc.identifier.uri | https://dais.sanu.ac.rs/123456789/3485 | |
dc.description.abstract | The influence of poisoning of Pt catalyst by CO on the kinetics and mechanism of H2 oxidation reaction (HOR) at Pt/C electrode in 0.5 mol dm-3 HClO4, saturated with H2 containing 100 ppm CO, was examined with rotating disc electrode (RDE) at 22 °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 (Ik) for the HOR at Pt/C decreases significantly at CO coverage (ΘCO) > 0.6. For ΘCO < 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). © 2008 Elsevier Ltd. All rights reserved. | en |
dc.publisher | Elsevier | |
dc.relation | info:eu-repo/grantAgreement/MESTD/MPN2006-2010/142038/RS// | |
dc.rights | restrictedAccess | |
dc.source | Electrochimica Acta | |
dc.subject | CO adsorption | |
dc.subject | hydrogen oxidation | |
dc.subject | mechanism | |
dc.subject | RDE | |
dc.subject | Pt nanosized catalyst | |
dc.title | Effect of chemisorbed carbon monoxide on Pt/C electrode on the mechanism of the hydrogen oxidation reaction | en |
dc.type | article | en |
dc.rights.license | ARR | |
dcterms.abstract | Врачар, Љиљана; Елезовић, Невенка Р.; Крстајић, Недељко В.; Гајић-Крстајић, Љиљана; Радмиловић, Велимир Р.; | |
dc.citation.spage | 1375 | |
dc.citation.epage | 1382 | |
dc.citation.volume | 54 | |
dc.citation.issue | 4 | |
dc.identifier.wos | 000262810900031 | |
dc.identifier.doi | 10.1016/j.electacta.2008.08.067 | |
dc.identifier.scopus | 2-s2.0-57749182921 | |
dc.type.version | publishedVersion | |
dc.identifier.rcub | https://hdl.handle.net/21.15107/rcub_dais_3485 |