Reactivity descriptors for Cu bis-phenanthroline catalysts for the hydrogen peroxide reduction reaction

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dc.contributor.authorMuñoz Becerra, K.
dc.contributor.authorBáez, D. F.
dc.contributor.authorZagal, J. H.
dc.contributor.authorBollo, S.
dc.contributor.authorToro Labbé, Alejandro
dc.contributor.authorVenegas Toledo, Ricardo Alberto
dc.contributor.authorRecio Cortés, Francisco Javier
dc.date.accessioned2021-09-29T15:59:43Z
dc.date.available2021-09-29T15:59:43Z
dc.date.issued2020
dc.description.abstractFollowing previous studies where the metal-centered redox potentials of MN4 complexes are proposed as a reactivity descriptor for different electrochemical reactions, in the present work we expand this idea to a series of substituted Cu(I)-phenanthrolines adsorbed on glassy carbon electrodes as catalysts for the hydrogen peroxide reduction reaction (HPRR) in aqueous media. As the foot of the wave for HPRR on Cu-based modified electrodes is closely related to the Cu(II)/Cu(I) formal potential, we have found a linear correlation between the catalytic activity expressed as (log i)E and the E°'Cu(II)/Cu(I) redox potential of the complexes with a slope (dE°/dlogi)E close to +0.120 V dec−1, showing that the catalytic activity increases with the shift of E°'Cu(II)/Cu(I) to more positive potentials as a result of the electron-withdrawing nature of the substituents on the ligands. Moreover, the theoretical differences in the calculated chemical potentials (Δμ) of the reactive species follow a similar trend with the E°'Cu(II)/Cu(I) where a positive shift of this parameter is related with a higher Δμ and in consequence, with high catalytic activity. Furthermore, this strategy can be used for the smart design of biosensors as it was shown by the electroanalytical results.
dc.format.extent7 páginas
dc.fuente.origenConveris
dc.identifier.doi10.1016/j.electacta.2020.136881
dc.identifier.eissn1873-3859
dc.identifier.issn0013-4686
dc.identifier.scopusid2-s2.0-85089416081
dc.identifier.urihttps://doi.org/10.1016/j.electacta.2020.136881
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/62727
dc.information.autorucEscuela de química ; Toro Labbé, Alejandro ; 0000-0001-9906-2153 ; 99827
dc.information.autorucEscuela de química ; Venegas Toledo, Ricardo Alberto ; 0000-0001-7440-484X ; 1033002
dc.information.autorucEscuela de química ; Recio Cortés, Francisco Javier ; 0000-0002-5181-3197 ; 250556
dc.information.autorucEscuela de química ; Muñoz Becerra, Karina ; 0000-0001-9882-6342 ; 1033001
dc.language.isoen
dc.pagina.final7
dc.pagina.inicio1
dc.relation.isformatofElectrochimica Acta, Vol. 357 (Ago, 2020), pp. 1-7
dc.revistaElectrochimica Actaes_ES
dc.rightsacceso restringido
dc.subjectHydrogen peroxide reduction reaction
dc.subjectReactivity descriptors
dc.subjectCopper catalysts
dc.subjectHydrogen peroxide sensor
dc.subject.ddc510
dc.subject.deweyMatemática física y químicaes_ES
dc.subject.otherReacción de oxidación-reducciónes_ES
dc.subject.otherPeróxido de hidrógenoes_ES
dc.subject.otherCatalizadores de cobrees_ES
dc.titleReactivity descriptors for Cu bis-phenanthroline catalysts for the hydrogen peroxide reduction reactiones_ES
dc.typeartículo
dc.volumenVol. 357
sipa.codpersvinculados1033001
sipa.codpersvinculados99827
sipa.codpersvinculados1033002
sipa.codpersvinculados25556
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