Ве молиме користете го овој идентификатор да го цитирате или поврзете овој запис: http://hdl.handle.net/20.500.12188/15087
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dc.contributor.authorMirceski, Valentinen_US
dc.contributor.authorLaborda, Eduardoen_US
dc.contributor.authorGuziejewski, Dariuszen_US
dc.contributor.authorCompton, Richard Gen_US
dc.date.accessioned2021-10-04T06:45:09Z-
dc.date.available2021-10-04T06:45:09Z-
dc.date.issued2013-06-04-
dc.identifier.urihttp://hdl.handle.net/20.500.12188/15087-
dc.description.abstractThe influence of the potential pulse height of square-wave voltammetry (SWV) (i.e., the SW amplitude) is studied for a variety of quasireversible electrode mechanisms, including a simple solution-phase electrode reaction at a planar or spherical electrode, a solution phase electrode reaction coupled with a reversible follow-up chemical reaction, and a diffusionless surface confined electrode reaction. The electrode kinetics of all the electrode mechanisms depends critically on the SW amplitude, and the quasireversible kinetic region is a function of both frequency-related electrode kinetic parameters and the SW amplitude. Thus, a novel methodology for electrode kinetics measurements is proposed by altering the SW amplitude only, at a fixed frequency of the SW potential modulation, that is, at a constant scan rate of the voltammetric experiment. Electrode kinetic measurements at a constant SW frequency are of exceptional importance especially when complex electrode mechanisms are studied, which depend on several frequency-related kinetic parameters. The electrode kinetic measurements are based on a novel feature termed the "amplitude-based quasireversible maximum", manifested as a parabolic dependence of the amplitude-normalized net SW peak current versus the SW amplitude. The position of the amplitude-based quasireversible maximum depends on the standard rate constant of the electrode reaction, enabling estimation of this important kinetic parameter in a simple and fast procedure. The novel quasireversible maximum is attributed to all studied electrode mechanisms, implying that it is a general feature of most electrode mechanisms under conditions of SWV.en_US
dc.language.isoenen_US
dc.publisherAmerican Chemical Society (ACS)en_US
dc.relation.ispartofAnalytical chemistryen_US
dc.titleNew approach to electrode kinetic measurements in square-wave voltammetry: amplitude-based quasireversible maximumen_US
dc.identifier.doi10.1021/ac4008573-
dc.identifier.urlhttps://pubs.acs.org/doi/pdf/10.1021/ac4008573-
dc.identifier.volume85-
dc.identifier.issue11-
item.fulltextNo Fulltext-
item.grantfulltextnone-
Appears in Collections:Faculty of Natural Sciences and Mathematics: Journal Articles
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