Electrochemical reduction of the mycotoxin citrinin at bare and modified with multi-walled carbon nanotubes glassy carbon electrodes in a non-aqueous reaction medium

Autores
Zachetti, Vanessa Gimena Lourdes; Granero, Adrian Marcelo; Robledo, Sebastian Noel; Zon, María Alicia; DaRocha Rosa, Carlos A.; Fernández, Héctor
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The electrochemical reduction mechanism of citrinin in acetonitrile + 0.1 mol L-1 (C4H9)4NClO4 at both bare and modified with multi-walled carbon nanotubes glassy carbon electrodes has been investigated for the first time, by cyclic voltammetry and controlled potential electrolysis. Results allowed to infer a complex electro-reduction mechanism with chemical and electrochemical steps coupled to the initial electron transfer reaction. Citrinin shows a single cathodic voltammetric peak which corresponds, at least, to two electron reductions steps and two homogeneous chemical reactions, conforming to an ECEC self-protonation mechanism. The chemical reactions stems intermolecular proton transfers from the substrate to its basic reduction intermediates, featuring a self-protonation mechanism. Kinetics analysis by simulation procedures of voltammetric results have permitted to fully characterized the mechanism of citrinin heterogeneous reduction.
Fil: Zachetti, Vanessa Gimena Lourdes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina
Fil: Granero, Adrian Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina
Fil: Robledo, Sebastian Noel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ingeniería. Departamento de Tecnología Química; Argentina
Fil: Zon, María Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina
Fil: DaRocha Rosa, Carlos A.. Universidade Federal Rural do Rio de Janeiro; Brasil
Fil: Fernández, Héctor. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina
Materia
CITRININ
MYCOTOXINS
MULTI-WALLED CARBON NANOTUBES
CYCLIC VOLTAMMETRY
SQUARE WAVE VOLTAMMETRY
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/269138
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/269138
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Electrochemical reduction of the mycotoxin citrinin at bare and modified with multi-walled carbon nanotubes glassy carbon electrodes in a non-aqueous reaction mediumZachetti, Vanessa Gimena LourdesGranero, Adrian MarceloRobledo, Sebastian NoelZon, María AliciaDaRocha Rosa, Carlos A.Fernández, HéctorCITRININMYCOTOXINSMULTI-WALLED CARBON NANOTUBESCYCLIC VOLTAMMETRYSQUARE WAVE VOLTAMMETRYhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The electrochemical reduction mechanism of citrinin in acetonitrile + 0.1 mol L-1 (C4H9)4NClO4 at both bare and modified with multi-walled carbon nanotubes glassy carbon electrodes has been investigated for the first time, by cyclic voltammetry and controlled potential electrolysis. Results allowed to infer a complex electro-reduction mechanism with chemical and electrochemical steps coupled to the initial electron transfer reaction. Citrinin shows a single cathodic voltammetric peak which corresponds, at least, to two electron reductions steps and two homogeneous chemical reactions, conforming to an ECEC self-protonation mechanism. The chemical reactions stems intermolecular proton transfers from the substrate to its basic reduction intermediates, featuring a self-protonation mechanism. Kinetics analysis by simulation procedures of voltammetric results have permitted to fully characterized the mechanism of citrinin heterogeneous reduction.Fil: Zachetti, Vanessa Gimena Lourdes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; ArgentinaFil: Granero, Adrian Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; ArgentinaFil: Robledo, Sebastian Noel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ingeniería. Departamento de Tecnología Química; ArgentinaFil: Zon, María Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; ArgentinaFil: DaRocha Rosa, Carlos A.. Universidade Federal Rural do Rio de Janeiro; BrasilFil: Fernández, Héctor. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; ArgentinaSociedade Brasileira de Química2012-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/269138Zachetti, Vanessa Gimena Lourdes; Granero, Adrian Marcelo; Robledo, Sebastian Noel; Zon, María Alicia; DaRocha Rosa, Carlos A.; et al.; Electrochemical reduction of the mycotoxin citrinin at bare and modified with multi-walled carbon nanotubes glassy carbon electrodes in a non-aqueous reaction medium; Sociedade Brasileira de Química; Journal of the Brazilian Chemical Society; 23; 6; 12-2012; 1131-11390103-50531678-4790CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.scielo.br/j/jbchs/a/Qk68syGydgjW9MfMTZhX8LH/info:eu-repo/semantics/altIdentifier/doi/10.1590/S0103-50532012000600019info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:24:04Zoai:ri.conicet.gov.ar:11336/269138instacron: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:34982025-10-15 15:24:05.241CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Electrochemical reduction of the mycotoxin citrinin at bare and modified with multi-walled carbon nanotubes glassy carbon electrodes in a non-aqueous reaction medium
title Electrochemical reduction of the mycotoxin citrinin at bare and modified with multi-walled carbon nanotubes glassy carbon electrodes in a non-aqueous reaction medium
spellingShingle Electrochemical reduction of the mycotoxin citrinin at bare and modified with multi-walled carbon nanotubes glassy carbon electrodes in a non-aqueous reaction medium
Zachetti, Vanessa Gimena Lourdes
CITRININ
MYCOTOXINS
MULTI-WALLED CARBON NANOTUBES
CYCLIC VOLTAMMETRY
SQUARE WAVE VOLTAMMETRY
title_short Electrochemical reduction of the mycotoxin citrinin at bare and modified with multi-walled carbon nanotubes glassy carbon electrodes in a non-aqueous reaction medium
title_full Electrochemical reduction of the mycotoxin citrinin at bare and modified with multi-walled carbon nanotubes glassy carbon electrodes in a non-aqueous reaction medium
title_fullStr Electrochemical reduction of the mycotoxin citrinin at bare and modified with multi-walled carbon nanotubes glassy carbon electrodes in a non-aqueous reaction medium
title_full_unstemmed Electrochemical reduction of the mycotoxin citrinin at bare and modified with multi-walled carbon nanotubes glassy carbon electrodes in a non-aqueous reaction medium
title_sort Electrochemical reduction of the mycotoxin citrinin at bare and modified with multi-walled carbon nanotubes glassy carbon electrodes in a non-aqueous reaction medium
dc.creator.none.fl_str_mv Zachetti, Vanessa Gimena Lourdes
Granero, Adrian Marcelo
Robledo, Sebastian Noel
Zon, María Alicia
DaRocha Rosa, Carlos A.
Fernández, Héctor
author Zachetti, Vanessa Gimena Lourdes
author_facet Zachetti, Vanessa Gimena Lourdes
Granero, Adrian Marcelo
Robledo, Sebastian Noel
Zon, María Alicia
DaRocha Rosa, Carlos A.
Fernández, Héctor
author_role author
author2 Granero, Adrian Marcelo
Robledo, Sebastian Noel
Zon, María Alicia
DaRocha Rosa, Carlos A.
Fernández, Héctor
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv CITRININ
MYCOTOXINS
MULTI-WALLED CARBON NANOTUBES
CYCLIC VOLTAMMETRY
SQUARE WAVE VOLTAMMETRY
topic CITRININ
MYCOTOXINS
MULTI-WALLED CARBON NANOTUBES
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 electrochemical reduction mechanism of citrinin in acetonitrile + 0.1 mol L-1 (C4H9)4NClO4 at both bare and modified with multi-walled carbon nanotubes glassy carbon electrodes has been investigated for the first time, by cyclic voltammetry and controlled potential electrolysis. Results allowed to infer a complex electro-reduction mechanism with chemical and electrochemical steps coupled to the initial electron transfer reaction. Citrinin shows a single cathodic voltammetric peak which corresponds, at least, to two electron reductions steps and two homogeneous chemical reactions, conforming to an ECEC self-protonation mechanism. The chemical reactions stems intermolecular proton transfers from the substrate to its basic reduction intermediates, featuring a self-protonation mechanism. Kinetics analysis by simulation procedures of voltammetric results have permitted to fully characterized the mechanism of citrinin heterogeneous reduction.
Fil: Zachetti, Vanessa Gimena Lourdes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina
Fil: Granero, Adrian Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina
Fil: Robledo, Sebastian Noel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ingeniería. Departamento de Tecnología Química; Argentina
Fil: Zon, María Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina
Fil: DaRocha Rosa, Carlos A.. Universidade Federal Rural do Rio de Janeiro; Brasil
Fil: Fernández, Héctor. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química. Área Electroquímica; Argentina
description The electrochemical reduction mechanism of citrinin in acetonitrile + 0.1 mol L-1 (C4H9)4NClO4 at both bare and modified with multi-walled carbon nanotubes glassy carbon electrodes has been investigated for the first time, by cyclic voltammetry and controlled potential electrolysis. Results allowed to infer a complex electro-reduction mechanism with chemical and electrochemical steps coupled to the initial electron transfer reaction. Citrinin shows a single cathodic voltammetric peak which corresponds, at least, to two electron reductions steps and two homogeneous chemical reactions, conforming to an ECEC self-protonation mechanism. The chemical reactions stems intermolecular proton transfers from the substrate to its basic reduction intermediates, featuring a self-protonation mechanism. Kinetics analysis by simulation procedures of voltammetric results have permitted to fully characterized the mechanism of citrinin heterogeneous reduction.
publishDate 2012
dc.date.none.fl_str_mv 2012-12
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/11336/269138
Zachetti, Vanessa Gimena Lourdes; Granero, Adrian Marcelo; Robledo, Sebastian Noel; Zon, María Alicia; DaRocha Rosa, Carlos A.; et al.; Electrochemical reduction of the mycotoxin citrinin at bare and modified with multi-walled carbon nanotubes glassy carbon electrodes in a non-aqueous reaction medium; Sociedade Brasileira de Química; Journal of the Brazilian Chemical Society; 23; 6; 12-2012; 1131-1139
0103-5053
1678-4790
CONICET Digital
CONICET
url http://hdl.handle.net/11336/269138
identifier_str_mv Zachetti, Vanessa Gimena Lourdes; Granero, Adrian Marcelo; Robledo, Sebastian Noel; Zon, María Alicia; DaRocha Rosa, Carlos A.; et al.; Electrochemical reduction of the mycotoxin citrinin at bare and modified with multi-walled carbon nanotubes glassy carbon electrodes in a non-aqueous reaction medium; Sociedade Brasileira de Química; Journal of the Brazilian Chemical Society; 23; 6; 12-2012; 1131-1139
0103-5053
1678-4790
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.scielo.br/j/jbchs/a/Qk68syGydgjW9MfMTZhX8LH/
info:eu-repo/semantics/altIdentifier/doi/10.1590/S0103-50532012000600019
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
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
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score 13.22299

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