pH dependence of the voltammetric response of Polyaniline

Autores
Scotto, Juliana; Florit, María Inés; Posadas, Dionisio
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Voltammetric studies of Polyaniline (Pani) films were carried out in solutions of 3.7Msulphate solutions of constant ionic strength and pH values comprised in the range between −0.6 and 3.0. The results show that if the voltammetric results are properly corrected by capacitive currents, according to Feldberg'smodel, it will be possible to obtain the potential dependence of the faradaic oxidation degree. The integrated anodic and cathodic charges are practically equal and independent of the electrolyte pH, in the range −0.6 b pH b 2.0. The pH dependence of the current peaks is qualitatively explained by the change in the interactions between the redox centres as a consequence of the changes in their protonation.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Química
Polyaniline
Voltammetry
pH dependence
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/118313
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/118313
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling pH dependence of the voltammetric response of PolyanilineScotto, JulianaFlorit, María InésPosadas, DionisioQuímicaPolyanilineVoltammetrypH dependenceVoltammetric studies of Polyaniline (Pani) films were carried out in solutions of 3.7Msulphate solutions of constant ionic strength and pH values comprised in the range between −0.6 and 3.0. The results show that if the voltammetric results are properly corrected by capacitive currents, according to Feldberg'smodel, it will be possible to obtain the potential dependence of the faradaic oxidation degree. The integrated anodic and cathodic charges are practically equal and independent of the electrolyte pH, in the range −0.6 b pH b 2.0. The pH dependence of the current peaks is qualitatively explained by the change in the interactions between the redox centres as a consequence of the changes in their protonation.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas2017info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf14-19http://sedici.unlp.edu.ar/handle/10915/118313enginfo:eu-repo/semantics/altIdentifier/issn/1572-6657info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jelechem.2016.11.066info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:27:49Zoai:sedici.unlp.edu.ar:10915/118313Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:27:50.012SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv pH dependence of the voltammetric response of Polyaniline
title pH dependence of the voltammetric response of Polyaniline
spellingShingle pH dependence of the voltammetric response of Polyaniline
Scotto, Juliana
Química
Polyaniline
Voltammetry
pH dependence
title_short pH dependence of the voltammetric response of Polyaniline
title_full pH dependence of the voltammetric response of Polyaniline
title_fullStr pH dependence of the voltammetric response of Polyaniline
title_full_unstemmed pH dependence of the voltammetric response of Polyaniline
title_sort pH dependence of the voltammetric response of Polyaniline
dc.creator.none.fl_str_mv Scotto, Juliana
Florit, María Inés
Posadas, Dionisio
author Scotto, Juliana
author_facet Scotto, Juliana
Florit, María Inés
Posadas, Dionisio
author_role author
author2 Florit, María Inés
Posadas, Dionisio
author2_role author
author
dc.subject.none.fl_str_mv Química
Polyaniline
Voltammetry
pH dependence
topic Química
Polyaniline
Voltammetry
pH dependence
dc.description.none.fl_txt_mv Voltammetric studies of Polyaniline (Pani) films were carried out in solutions of 3.7Msulphate solutions of constant ionic strength and pH values comprised in the range between −0.6 and 3.0. The results show that if the voltammetric results are properly corrected by capacitive currents, according to Feldberg'smodel, it will be possible to obtain the potential dependence of the faradaic oxidation degree. The integrated anodic and cathodic charges are practically equal and independent of the electrolyte pH, in the range −0.6 b pH b 2.0. The pH dependence of the current peaks is qualitatively explained by the change in the interactions between the redox centres as a consequence of the changes in their protonation.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description Voltammetric studies of Polyaniline (Pani) films were carried out in solutions of 3.7Msulphate solutions of constant ionic strength and pH values comprised in the range between −0.6 and 3.0. The results show that if the voltammetric results are properly corrected by capacitive currents, according to Feldberg'smodel, it will be possible to obtain the potential dependence of the faradaic oxidation degree. The integrated anodic and cathodic charges are practically equal and independent of the electrolyte pH, in the range −0.6 b pH b 2.0. The pH dependence of the current peaks is qualitatively explained by the change in the interactions between the redox centres as a consequence of the changes in their protonation.
publishDate 2017
dc.date.none.fl_str_mv 2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/118313
url http://sedici.unlp.edu.ar/handle/10915/118313
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1572-6657
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jelechem.2016.11.066
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
14-19
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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