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Aktivnost Pt3Ru2/C nanokatalizatora u oksidaciji CO

dc.creatorPopović, Ksenija
dc.creatorLović, Jelena
dc.creatorTripković, Amalija
dc.creatorOlszewski, Piotr K.
dc.date.accessioned2019-01-30T17:19:51Z
dc.date.available2019-01-30T17:19:51Z
dc.date.issued2009
dc.identifier.issn0352-5139
dc.identifier.urihttps://cer.ihtm.bg.ac.rs/handle/123456789/513
dc.description.abstractThe electrocatalytic activity of Pt3Ru2/C nanocatalyst toward the electro-oxidation of bulk CO was examined in acid and alkaline solution at ambient temperature using the thin-film, rotating disk electrode (RDE) method. The catalyst was characterized by XRD analysis. The XRD pattern revealed that the Pt3Ru2/C catalyst consisted of two structures, i.e., Pt-Ru-fcc and Ruhcp (a solid solution of Ru in Pt and a small amount of Ru or a solid solution of Pt in Ru). Electrocatalytic activities were measured by applying potentiodynamic and steady state techniques. The oxidation of CO on the Pt3Ru2/C catalyst was influenced by pH and anions from the supporting electrolytes. The Pt3Ru2/C was more active in alkaline than in acid solution, as well as in perchloric than in sulfuric acid. Comparison of CO oxidation on Pt3Ru2/C and Pt/C revealed that the Pt3Ru2/C was more active than Pt/C in acid solution, while both catalysts had a similar activity in alkaline solution.en
dc.description.abstractElektrohemijska oksidacija CO ispitivana je na nanokatalizatoru Pt3Ru2 dispergovanom na aktivnom uglju kao nosaču u kiseloj i alkalnoj sredini na sobnoj temperaturi korišćenjem metode rotirajuće disk elektrode (RDE). Katalizator je okarakterisan difrakcijom X-zraka (XRD) i dobijeni rezultati su pokazali da se legura Pt3Ru2 sastoji od dve faze: čvrstog rastvora Ru u Pt i od malih količina čistog Ru ili čvrstog rastvora Pt u Ru. Elektrokatalitička aktivnost ovog katalizatora za oksidaciju CO je ispitivana cik- ličnom voltametrijom i pokazan je efekat pH i efekat anjona iz nosećeg elektrolita. Pt3Ru2/C katalizator je aktivniji u alkalnoj nego u kiseloj sredini, ukazujući na činjenicu da u alkaliji Pt može da adsorbuje OH čestice na isto tako niskim potencijalima kao i Ru i na taj način ubrzava reakciju oksidacije CO u poređenju sa kiselinom. Pokazano je da adsorpcija bisulfatnih anjona iz nosećeg elektrolita pomera početni potencijal reakcije ka pozitivnijim vrednostima i smanjuje brzinu oksidacije CO. Poređenjem aktivnosti Pt/C i Pt3Ru2/C katalizatora u oksidaciji CO u kiseloj i alkalnij sredini pokazano je da je ta razlika znatno manja u alkalnoj nego u kiseloj sredini.sr
dc.publisherSerbian Chemical Society
dc.relationinfo:eu-repo/grantAgreement/MESTD/MPN2006-2010/142056/RS//
dc.rightsopenAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceJournal of the Serbian Chemical Society
dc.subjectCO oxidationen
dc.subjectPt3Ru2/C nanocatalysten
dc.subjectXRDen
dc.subjectpH effecten
dc.subjectanion effecten
dc.titleActivity of carbon supported Pt3Ru2 nanocatalyst in CO oxidationen
dc.titleAktivnost Pt3Ru2/C nanokatalizatora u oksidaciji COsr
dc.typearticle
dc.rights.licenseBY-NC-ND
dcterms.abstractОлсзеwски, Пиотр К.; Поповић, Ксенија; Ловић, Јелена; Трипковиц, Aмалија В.; Aктивност Пт3Ру2/Ц нанокатализатора у оксидацији ЦО; Aктивност Пт3Ру2/Ц нанокатализатора у оксидацији ЦО;
dc.citation.volume74
dc.citation.issue8-9
dc.citation.spage965
dc.citation.epage975
dc.citation.other74(8-9): 965-975
dc.citation.rankM23
dc.identifier.doi10.2298/JSC0909965P
dc.identifier.fulltexthttps://cer.ihtm.bg.ac.rs//bitstream/id/9158/511.pdf
dc.identifier.scopus2-s2.0-77349125183
dc.identifier.wos000270267200011
dc.type.versionpublishedVersion


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