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dc.contributor.author
Vettorazzi, Nelio Roberto
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dc.contributor.author
Sereno, Leonides Edmundo
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dc.contributor.author
Katoh, Masaaki
dc.contributor.author
Ota, Michiya
dc.contributor.author
Otero, Luis Alberto
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dc.date.available
2024-07-25T15:52:53Z
dc.date.issued
2008-05
dc.identifier.citation
Vettorazzi, Nelio Roberto; Sereno, Leonides Edmundo; Katoh, Masaaki; Ota, Michiya; Otero, Luis Alberto; Correlation Between the Distribution of Oxide Functional Groups and Electrocatalytic Activity of Glassy Carbon Surface; Electrochemical Society; Journal of the Electrochemical Society; 155; 5; 5-2008; 110-115
dc.identifier.issn
0013-4651
dc.identifier.uri
http://hdl.handle.net/11336/240904
dc.description.abstract
Oxidative electrochemical pretreatment on glassy carbon GC electrodes in aqueous media produces changes in the relative densities of oxidized species present on the material surface. These changes vary with both applied potential and time procedure. The GC surface oxidation treatment not only increases the oxygen-containing group coverage but also causes lattice damage, producing a highly porous dielectric film. In this work we report the gradual relationship between the kinetics of the heterogeneous charge transfer after different pretreatment procedures and the surface distribution of oxidized species in GC measured through electron spectroscopy for chemical analysis. The lack of faradaic current observed when the electrode surface is oxidized under the constant-potential regime is proposed to be due to changes in the lattice structure, observed by scanning electron microscopy. This fact is important in systems where carbon materials are used as electrodes under the continuous-oxidation regime, such as high-performance liquid chromatography electrochemical detectors, batteries, capacitors, and for the generation of polymers by potentiostatic oxidation. densities of oxidized species present on the material surface. These changes vary with both applied potential and time procedure. The GC surface oxidation treatment not only increases the oxygen-containing group coverage but also causes lattice damage, producing a highly porous dielectric film. In this work we report the gradual relationship between the kinetics of the heterogeneous charge transfer after different pretreatment procedures and the surface distribution of oxidized species in GC measured through electron spectroscopy for chemical analysis. The lack of faradaic current observed when the electrode surface is oxidized under the constant-potential regime is proposed to be due to changes in the lattice structure, observed by scanning electron microscopy. This fact is important in systems where carbon materials are used as electrodes under the continuous-oxidation regime, such as high-performance liquid chromatography electrochemical detectors, batteries, capacitors, and for the generation of polymers by potentiostatic oxidation. GC electrodes in aqueous media produces changes in the relative densities of oxidized species present on the material surface. These changes vary with both applied potential and time procedure. The GC surface oxidation treatment not only increases the oxygen-containing group coverage but also causes lattice damage, producing a highly porous dielectric film. In this work we report the gradual relationship between the kinetics of the heterogeneous charge transfer after different pretreatment procedures and the surface distribution of oxidized species in GC measured through electron spectroscopy for chemical analysis. The lack of faradaic current observed when the electrode surface is oxidized under the constant-potential regime is proposed to be due to changes in the lattice structure, observed by scanning electron microscopy. This fact is important in systems where carbon materials are used as electrodes under the continuous-oxidation regime, such as high-performance liquid chromatography electrochemical detectors, batteries, capacitors, and for the generation of polymers by potentiostatic oxidation.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Electrochemical Society
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Glassy carbon
dc.subject
Electrocatalysis
dc.subject
Electrochemical treatment
dc.subject.classification
Físico-Química, Ciencia de los Polímeros, Electroquímica
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dc.subject.classification
Ciencias Químicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Correlation Between the Distribution of Oxide Functional Groups and Electrocatalytic Activity of Glassy Carbon Surface
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-07-25T14:31:58Z
dc.journal.volume
155
dc.journal.number
5
dc.journal.pagination
110-115
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
New Jersey
dc.description.fil
Fil: Vettorazzi, Nelio Roberto. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina
dc.description.fil
Fil: Sereno, Leonides Edmundo. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina
dc.description.fil
Fil: Katoh, Masaaki. Gunma College of Technology; Japón
dc.description.fil
Fil: Ota, Michiya. Gunma College of Technology; Japón
dc.description.fil
Fil: Otero, Luis Alberto. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
dc.journal.title
Journal of the Electrochemical Society
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1149/1.2895065
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1149/1.2895065
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