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dc.creatorStanković, S
dc.creatorGrgur, Branimir
dc.creatorKrstajić, Nedeljko V.
dc.creatorVojnović, M
dc.date.accessioned2021-03-10T10:06:23Z
dc.date.available2021-03-10T10:06:23Z
dc.date.issued2003
dc.identifier.issn1572-6657
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/522
dc.description.abstractPolarization curves of the hydrogen evolution reaction on zinc were obtained in Ethylenediaminetetraacetic acid (EDTA) solutions of different total molar concentrations (0.05, 0.10, 0.15 and 0.20 mol dm(-3)), the pH values of which were systematically varied (pH 3.0-10.0). The Tafel slopes of the cathodic polarization curves are -120 to -145 mV dec(-1) at lower currents densities (approximately 10(-5) -5x10(-4) A cm(-2)), while the higher current densities (approximately 5x10(-4)-10(-4) A cm(-2)) the slopes are in the range -190 to -370 mV dec(-1). The apparent cathodic reaction orders with respect to the hydrogen ions and EDTA, which were obtained from the cathodic polarization curves at the lower current densities, are z(-)(H+) congruent to 1/2 and z(-)(H4Y) congruent to 1, respectively. On the basis of these results, a mechanism of the hydrogen evolution reaction on zinc in the EDTA solutions examined, where protonated EDTA species (the protonated EDTA anions and the acid itself) participate directly as reactants is proposed. The unusual polarization behavior of the zinc electrode in the higher current density range is discussed.en
dc.publisherElsevier Science Sa, Lausanne
dc.rightsrestrictedAccess
dc.sourceJournal of Electroanalytical Chemistry
dc.subjectzincen
dc.subjectEDTAen
dc.subjecthydrogen evolution reactionen
dc.subjectkineticsen
dc.subjectmechanismen
dc.titleThe kinetics of the hydrogen evolution reaction on zinc in EDTA solutions in the pH 3-10 rangeen
dc.typearticle
dc.rights.licenseARR
dc.citation.epage47
dc.citation.other549: 37-47
dc.citation.spage37
dc.citation.volume549
dc.identifier.doi10.1016/S0022-0728(03)00247-X
dc.identifier.rcubconv_2315
dc.identifier.scopus2-s2.0-0037671360
dc.identifier.wos000183792100004
dc.type.versionpublishedVersion


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