Characterization of the surface redox process of adsorbed morin at glassy carbon electrodes

Autores
Tesio, Alvaro Yamil; Granero, Adrian Marcelo; Fernandez, Hector; Zon, María Alicia
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The thermodynamic and kinetics of the adsorption of morin (MOR) on glassy carbon (GC) electrodes in 0.2 moldm−3 phosphate buffer solutions (PBS, pH 7.00) was studied by both cyclic (CV) and square wave (SWV) voltammetries. The Frumkin adsorption isotherm was the best to describe the specific interaction of MOR with GC electrodes. The SWV allowed to characterize the thermodynamic and kinetics of surface quasi-reversible redox couple of MOR, using the combination of the ?quasi-reversible maximum? and the ?splitting of SW net peaks? methods. Average values obtained for the formal potential and the anodic transfer coefficient were (0.27±0.02)V and (0.59±0.09), respectively. Moreover, a value of formal rate constant (ks) of 87s−1 for the overall two-electron redox process was calculated. The SWV was also employed to generate calibration curves, which were linear in the range MOR bulk concentration (c∗ MOR) from 1.27×10−7 to 2.50×10−5 moldm−3. The lowest concentration experimentally measured for a signal to noise ratio of 3:1 was 1.25×10−8 moldm−3 (3 ppb).
Fil: Tesio, Alvaro Yamil. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Granero, Adrian Marcelo. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Fernandez, Hector. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto; Argentina
Fil: Zon, María Alicia. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Morin
Flavonoids
Cyclic Voltammetry
Square Wave Voltammetry
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/68707
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/68707
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Characterization of the surface redox process of adsorbed morin at glassy carbon electrodesTesio, Alvaro YamilGranero, Adrian MarceloFernandez, HectorZon, María AliciaMorinFlavonoidsCyclic VoltammetrySquare Wave Voltammetryhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The thermodynamic and kinetics of the adsorption of morin (MOR) on glassy carbon (GC) electrodes in 0.2 moldm−3 phosphate buffer solutions (PBS, pH 7.00) was studied by both cyclic (CV) and square wave (SWV) voltammetries. The Frumkin adsorption isotherm was the best to describe the specific interaction of MOR with GC electrodes. The SWV allowed to characterize the thermodynamic and kinetics of surface quasi-reversible redox couple of MOR, using the combination of the ?quasi-reversible maximum? and the ?splitting of SW net peaks? methods. Average values obtained for the formal potential and the anodic transfer coefficient were (0.27±0.02)V and (0.59±0.09), respectively. Moreover, a value of formal rate constant (ks) of 87s−1 for the overall two-electron redox process was calculated. The SWV was also employed to generate calibration curves, which were linear in the range MOR bulk concentration (c∗ MOR) from 1.27×10−7 to 2.50×10−5 moldm−3. The lowest concentration experimentally measured for a signal to noise ratio of 3:1 was 1.25×10−8 moldm−3 (3 ppb).Fil: Tesio, Alvaro Yamil. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaFil: Granero, Adrian Marcelo. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Fernandez, Hector. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto; ArgentinaFil: Zon, María Alicia. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaPergamon-Elsevier Science Ltd2011-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/68707Tesio, Alvaro Yamil; Granero, Adrian Marcelo; Fernandez, Hector; Zon, María Alicia; Characterization of the surface redox process of adsorbed morin at glassy carbon electrodes; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 56; 1; 2-2011; 2321-23270013-4686CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0013468610015495info:eu-repo/semantics/altIdentifier/doi//10.1016/j.electacta.2010.11.037info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T11:47:27Zoai:ri.conicet.gov.ar:11336/68707instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-17 11:47:27.787CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Characterization of the surface redox process of adsorbed morin at glassy carbon electrodes
title Characterization of the surface redox process of adsorbed morin at glassy carbon electrodes
spellingShingle Characterization of the surface redox process of adsorbed morin at glassy carbon electrodes
Tesio, Alvaro Yamil
Morin
Flavonoids
Cyclic Voltammetry
Square Wave Voltammetry
title_short Characterization of the surface redox process of adsorbed morin at glassy carbon electrodes
title_full Characterization of the surface redox process of adsorbed morin at glassy carbon electrodes
title_fullStr Characterization of the surface redox process of adsorbed morin at glassy carbon electrodes
title_full_unstemmed Characterization of the surface redox process of adsorbed morin at glassy carbon electrodes
title_sort Characterization of the surface redox process of adsorbed morin at glassy carbon electrodes
dc.creator.none.fl_str_mv Tesio, Alvaro Yamil
Granero, Adrian Marcelo
Fernandez, Hector
Zon, María Alicia
author Tesio, Alvaro Yamil
author_facet Tesio, Alvaro Yamil
Granero, Adrian Marcelo
Fernandez, Hector
Zon, María Alicia
author_role author
author2 Granero, Adrian Marcelo
Fernandez, Hector
Zon, María Alicia
author2_role author
author
author
dc.subject.none.fl_str_mv Morin
Flavonoids
Cyclic Voltammetry
Square Wave Voltammetry
topic Morin
Flavonoids
Cyclic Voltammetry
Square Wave Voltammetry
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The thermodynamic and kinetics of the adsorption of morin (MOR) on glassy carbon (GC) electrodes in 0.2 moldm−3 phosphate buffer solutions (PBS, pH 7.00) was studied by both cyclic (CV) and square wave (SWV) voltammetries. The Frumkin adsorption isotherm was the best to describe the specific interaction of MOR with GC electrodes. The SWV allowed to characterize the thermodynamic and kinetics of surface quasi-reversible redox couple of MOR, using the combination of the ?quasi-reversible maximum? and the ?splitting of SW net peaks? methods. Average values obtained for the formal potential and the anodic transfer coefficient were (0.27±0.02)V and (0.59±0.09), respectively. Moreover, a value of formal rate constant (ks) of 87s−1 for the overall two-electron redox process was calculated. The SWV was also employed to generate calibration curves, which were linear in the range MOR bulk concentration (c∗ MOR) from 1.27×10−7 to 2.50×10−5 moldm−3. The lowest concentration experimentally measured for a signal to noise ratio of 3:1 was 1.25×10−8 moldm−3 (3 ppb).
Fil: Tesio, Alvaro Yamil. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Granero, Adrian Marcelo. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Fernandez, Hector. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Cuarto; Argentina
Fil: Zon, María Alicia. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description The thermodynamic and kinetics of the adsorption of morin (MOR) on glassy carbon (GC) electrodes in 0.2 moldm−3 phosphate buffer solutions (PBS, pH 7.00) was studied by both cyclic (CV) and square wave (SWV) voltammetries. The Frumkin adsorption isotherm was the best to describe the specific interaction of MOR with GC electrodes. The SWV allowed to characterize the thermodynamic and kinetics of surface quasi-reversible redox couple of MOR, using the combination of the ?quasi-reversible maximum? and the ?splitting of SW net peaks? methods. Average values obtained for the formal potential and the anodic transfer coefficient were (0.27±0.02)V and (0.59±0.09), respectively. Moreover, a value of formal rate constant (ks) of 87s−1 for the overall two-electron redox process was calculated. The SWV was also employed to generate calibration curves, which were linear in the range MOR bulk concentration (c∗ MOR) from 1.27×10−7 to 2.50×10−5 moldm−3. The lowest concentration experimentally measured for a signal to noise ratio of 3:1 was 1.25×10−8 moldm−3 (3 ppb).
publishDate 2011
dc.date.none.fl_str_mv 2011-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/68707
Tesio, Alvaro Yamil; Granero, Adrian Marcelo; Fernandez, Hector; Zon, María Alicia; Characterization of the surface redox process of adsorbed morin at glassy carbon electrodes; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 56; 1; 2-2011; 2321-2327
0013-4686
CONICET Digital
CONICET
url http://hdl.handle.net/11336/68707
identifier_str_mv Tesio, Alvaro Yamil; Granero, Adrian Marcelo; Fernandez, Hector; Zon, María Alicia; Characterization of the surface redox process of adsorbed morin at glassy carbon electrodes; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 56; 1; 2-2011; 2321-2327
0013-4686
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0013468610015495
info:eu-repo/semantics/altIdentifier/doi//10.1016/j.electacta.2010.11.037
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1843606823028916224
score 13.001348

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