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dc.creatorPopić, Jovan P.
dc.creatorAvramov Ivić, Milka
dc.creatorVuković, N.B.
dc.date.accessioned2021-02-01T15:57:14Z
dc.date.available2021-02-01T15:57:14Z
dc.date.issued1997
dc.identifier.issn1572-6657
dc.identifier.issn1873-2569
dc.identifier.urihttps://cer.ihtm.bg.ac.rs/handle/123456789/4178
dc.description.abstractElectrochemical reduction of carbon dioxide is still of great interest in the fields of theoretical and applied electrochemistry. Ruthenium is one of the metals with an intermediate hydrogen evolution overpotential which adsorbs a considerable amount of hydrogen at underpotentials. Therefore, one can expect that the reduction of CO2 will take place at this electrode at relatively small overpotentials, at which the hydrogen evolution will not be excessive. This will diminish the loss due to concurrent hydrogen evolution. The stability of the electrode surface under vigorous hydrogen evolution enables investigation of the kinetics of CO2 reduction under long-term potentiostatic conditions. Reduction of CO2 at ruthenium and ruthenium modified by Cd and Cu adatoms was investigated in 0.5 M NaHCO3 solutions. Cyclic voltammetry, potentiostatic measurements and long-term electrolysis were performed using standard electrochemical equipment. The analysis of the bulk of the electrolyte was performed with gas chromatography. On the Ru surface as well as on Ru modified by Cu and Cd adatoms and on RuOx + IrOx modified by Cu adatoms and Cd adatoms, CO2 reduction proceeds to give methanol and acetone during 8 h of holding the potential at -0.8 V. The process of methanol formation on Ru modified by Cu and Cd adatoms is catalyzed by the presence of adatoms and the process of acetone formation is independent of the presence of adatoms at the ruthenium surface. For all the examined surfaces and for further investigations the most promising fact is the relatively low observed overvoltage of the holding potential for CO2 reduction, at which methanol and acetone were found in the bulk of the electrolyte. The faradaic efficiencies obtained for methanol production in the case of modified ruthenium surfaces indicate some possibility of practical applicationsr
dc.language.isoensr
dc.publisherElseviersr
dc.rightsrestrictedAccesssr
dc.sourceJournal of Electroanalytical Chemistrysr
dc.subjectruthenium oxide electrodesr
dc.subjectmodified ruthenium oxide electrodesr
dc.subjectcadmiumsr
dc.subjectcoppersr
dc.subjectreductionsr
dc.subjectcarbon dioxidesr
dc.titleReduction of carbon dioxide on ruthenium oxide and modified ruthenium oxide electrodes in 0.5 M NaHCO3sr
dc.typearticlesr
dc.rights.licenseARRsr
dcterms.abstractAврамов Ивић, Милка; Попић, Јован П.; Вуковић, Н.Б.;
dc.citation.volume421
dc.citation.issue1-2
dc.citation.spage105
dc.citation.epage110
dc.identifier.doi10.1016/S0022-0728(96)04823-1
dc.identifier.scopus2-s2.0-0030672421
dc.identifier.wosA1997WW94200015
dc.type.versionpublishedVersionsr


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Приказ основних података о документу