Guidelines for the voltammetric study of electrode reactions with coupled chemical kinetics at an arbitrary electrode geometry

López Tenés, Manuela; Laborda Ochando, Eduardo; Molina Gómez,  Ángela; Compton, Richard G.

Publication:
Guidelines for the voltammetric study of electrode reactions with coupled chemical kinetics at an arbitrary electrode geometry

dc.contributor.author	López Tenés, Manuela
dc.contributor.author	Laborda Ochando, Eduardo
dc.contributor.author	Molina Gómez, Ángela
dc.contributor.author	Compton, Richard G.
dc.contributor.department	Química Física
dc.date.accessioned	2021-03-23T17:36:56Z
dc.date.available	2021-03-23T17:36:56Z
dc.date.copyright	© 2019, American Chemical Society,
dc.date.issued	2019-04-02
dc.description.abstract	A powerful, unified, and simplifying mathematical approach for the theoretical treatment of first-order chemical kinetics coupled to interfacial charge transfers at electrodes of arbitrary geometry and size, both uniformly accessible and nonuniformly accessible to the electroactive species, is presented. The general CEC mechanism at spherical and disc electrodes is considered to test the validity and benefits of such an approach, based on the application of the so-called kinetic steady state, that enables the reduction of the multivariable problem of kinetic-diffusive differential equations to a single variable problem of a diffusion-only differential equation. This is solved both analytically and numerically, showing how this approach leads to general, simple, and efficient solutions for the study of the influence of coupled chemical kinetics on the voltammetric response. The voltammetry of the CEC mechanism is analyzed as a function of the kinetics and thermodynamics of the preceding and subsequent chemical reactions and of the electrode size (from macroelectrodes to ultramicroelectrodes) and shape (spherical and disc). Comparison with the responses of the CE, EC, and E mechanisms is included, proposing diagnosis criteria and procedures for quantitative analysis of experimental data.
dc.format	application/pdf	es
dc.format.extent	24	es
dc.identifier.citation	Analytical Chemistry 2019, 91 (9), 6072–6079
dc.identifier.doi	https://doi.org/10.1021/acs.analchem.9b00616
dc.identifier.eissn	1520-6882
dc.identifier.issn	0003-2700
dc.identifier.uri	http://hdl.handle.net/10201/105542
dc.language	eng	es
dc.publisher	ACS Publications	es
dc.relation	Ámbito del proyecto: regional. Agencia/entidad financiadora: Fundación Séneca de la Región de Murcia. Convocatoria: Convocatoria de ayudas a las unidades y grupos de excelencia científica de la Región de Murcia (Programa Séneca 2014). Nombre del proyecto: Advances in the study of charge transfer processes at static and dynamic micro-and nano-interfaces Código: 19887/GERM/15	es
dc.relation.publisherversion	https://pubs.acs.org/doi/10.1021/acs.analchem.9b00616	es
dc.rights	info:eu-repo/semantics/openAccess	es
dc.rights	Attribution-NonCommercial-NoDerivatives 4.0 Internacional	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/4.0/	*
dc.subject	Analytical theory	es
dc.subject	Numerical simulation	es
dc.subject	Voltammetry	es
dc.subject	Electron transfer mechanism	es
dc.subject	Microelectrode	es
dc.subject.other	CDU::5 - Ciencias puras y naturales::54 - Química::544 - Química física	es
dc.title	Guidelines for the voltammetric study of electrode reactions with coupled chemical kinetics at an arbitrary electrode geometry	es
dc.type	info:eu-repo/semantics/article	es
dc.type.version	info:eu-repo/semantics/acceptedVersión
dspace.entity.type	Publication	es
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