Mostrar el registro sencillo del ítem

dc.contributor.author
Brites Helú, Mariela Alicia  
dc.contributor.author
Fernandez, Jose Luis  
dc.date.available
2018-12-06T18:27:22Z  
dc.date.issued
2017-01  
dc.identifier.citation
Brites Helú, Mariela Alicia; Fernandez, Jose Luis; Analysis of the hydrogen electrode reaction mechanism in thin-layer cells. 3. Study of hydrogen electro-oxidation by scanning electrochemical microscopy; Elsevier Science Sa; Journal of Electroanalytical Chemistry; 784; 1-2017; 33-40  
dc.identifier.issn
1572-6657  
dc.identifier.uri
http://hdl.handle.net/11336/66012  
dc.description.abstract
Scanning electrochemical microscopy (SECM) in the feedback mode was used to analyze the complete mechanism of the hydrogen oxidation reaction (hor). A general SECM equation was proposed to carry out the kinetic analysis of the dependences of the tip current (iT) on the substrate potential (ES) and on the tip-substrate distance (d). This SECM equation involves the contribution of a thin-layer cell (TLC) with no aprioristic restrictions about the reaction mechanism. A dependence of the TLC current on ES previously developed for the hor operating through the Tafel-Heyrovsky-Volmer mechanism was included in the proposed SECM model. The domain of conditions where the equation properly reproduces the SECM responses was determined by contrasting the calculated iT(ES, d) dependences with simulated curves obtained by a numerical method using varied kinetic and geometric parameters. The experimental conditions where the model can be used were explored by analyzing the hor on Pt. The present treatment provides a versatile tool for the application of SECM to the kinetic and mechanistic analysis of the hor, which can be easily adapted for the analysis of any multi-step electrocatalyzed reaction on infinite substrates.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier Science Sa  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Hydrogen Oxidation Reaction  
dc.subject
Kinetic Analysis  
dc.subject
Reaction Mechanism  
dc.subject
Scanning Electrochemical Microscopy  
dc.subject
Thin-Layer Cell  
dc.subject.classification
Otras Ciencias Químicas  
dc.subject.classification
Ciencias Químicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Analysis of the hydrogen electrode reaction mechanism in thin-layer cells. 3. Study of hydrogen electro-oxidation by scanning electrochemical microscopy  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-11-27T16:32:50Z  
dc.journal.volume
784  
dc.journal.pagination
33-40  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Brites Helú, Mariela Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina  
dc.description.fil
Fil: Fernandez, Jose Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Electroquímica Aplicada e Ingeniería Electroquímica; Argentina  
dc.journal.title
Journal of Electroanalytical Chemistry  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1016/j.jelechem.2016.11.065  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1572665716306920