Electrochemical behaviour of different redox probes on single wall carbon nanotube buckypaper-modified electrodes

Autores
Sieben, Juan Manuel; Ansón Casaos, A.; Montilla, F.; Martínez, M.T.; Morallón, E.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In the present work, the electrochemical properties of single-walled carbon nanotube buckypapers (BPs) were examined in terms of carbon nanotubes nature and preparation conditions. The performance of the different free-standing single wall carbon nanotube sheets was evaluated via cyclic voltammetry of several redox probes in aqueous electrolyte. Significant differences are observed in the electron transfer kinetics of the buckypaper-modified electrodes for both the outer- and inner-sphere redox systems. These differences can be ascribed to the nature of the carbon nanotubes (nanotube diameter, chirality and aspect ratio), surface oxidation degree and type of functionalities. In the case of dopamine, ferrocene/ferrocenium, and quinone/hydroquinone redox systems the voltammetric response should be thought as a complex contribution of different tips and sidewall domains which act as mediators for the electron transfer between the adsorbate species and the molecules in solution. In the other redox systems only nanotube ends are active sites for the electron transfer. It is also interesting to point out that a higher electroactive surface area not always lead to an improvement in the electron transfer rate of various redox systems. In addition, the current densities produced by the redox reactions studied here are high enough to ensure a proper electrochemical signal, which enables the use of BPs in sensing devices.
Fil: Sieben, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur; Argentina
Fil: Ansón Casaos, A.. Consejo Superior de Investigaciones Científicas. Instituto de Carboquímica; España
Fil: Montilla, F.. Universidad de Alicante; España
Fil: Martínez, M.T.. Consejo Superior de Investigaciones Científicas. Instituto de Carboquímica; España
Fil: Morallón, E.. Universidad de Alicante; España
Materia
Buckypaper
Electrochemical Properties
Redox Probes
Single-Walled Carbon Nanotubes
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:11336/80064
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/80064
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Electrochemical behaviour of different redox probes on single wall carbon nanotube buckypaper-modified electrodesSieben, Juan ManuelAnsón Casaos, A.Montilla, F.Martínez, M.T.Morallón, E.BuckypaperElectrochemical PropertiesRedox ProbesSingle-Walled Carbon Nanotubeshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1In the present work, the electrochemical properties of single-walled carbon nanotube buckypapers (BPs) were examined in terms of carbon nanotubes nature and preparation conditions. The performance of the different free-standing single wall carbon nanotube sheets was evaluated via cyclic voltammetry of several redox probes in aqueous electrolyte. Significant differences are observed in the electron transfer kinetics of the buckypaper-modified electrodes for both the outer- and inner-sphere redox systems. These differences can be ascribed to the nature of the carbon nanotubes (nanotube diameter, chirality and aspect ratio), surface oxidation degree and type of functionalities. In the case of dopamine, ferrocene/ferrocenium, and quinone/hydroquinone redox systems the voltammetric response should be thought as a complex contribution of different tips and sidewall domains which act as mediators for the electron transfer between the adsorbate species and the molecules in solution. In the other redox systems only nanotube ends are active sites for the electron transfer. It is also interesting to point out that a higher electroactive surface area not always lead to an improvement in the electron transfer rate of various redox systems. In addition, the current densities produced by the redox reactions studied here are high enough to ensure a proper electrochemical signal, which enables the use of BPs in sensing devices.Fil: Sieben, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur; ArgentinaFil: Ansón Casaos, A.. Consejo Superior de Investigaciones Científicas. Instituto de Carboquímica; EspañaFil: Montilla, F.. Universidad de Alicante; EspañaFil: Martínez, M.T.. Consejo Superior de Investigaciones Científicas. Instituto de Carboquímica; EspañaFil: Morallón, E.. Universidad de Alicante; EspañaPergamon-Elsevier Science Ltd2014-05-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/80064Sieben, Juan Manuel; Ansón Casaos, A.; Montilla, F.; Martínez, M.T.; Morallón, E.; Electrochemical behaviour of different redox probes on single wall carbon nanotube buckypaper-modified electrodes; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 135; 10-5-2014; 404-4110013-4686CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0013468614009839info:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2014.05.016info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:47:34Zoai:ri.conicet.gov.ar:11336/80064instacron: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:34982025-09-29 09:47:35.121CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Electrochemical behaviour of different redox probes on single wall carbon nanotube buckypaper-modified electrodes
title Electrochemical behaviour of different redox probes on single wall carbon nanotube buckypaper-modified electrodes
spellingShingle Electrochemical behaviour of different redox probes on single wall carbon nanotube buckypaper-modified electrodes
Sieben, Juan Manuel
Buckypaper
Electrochemical Properties
Redox Probes
Single-Walled Carbon Nanotubes
title_short Electrochemical behaviour of different redox probes on single wall carbon nanotube buckypaper-modified electrodes
title_full Electrochemical behaviour of different redox probes on single wall carbon nanotube buckypaper-modified electrodes
title_fullStr Electrochemical behaviour of different redox probes on single wall carbon nanotube buckypaper-modified electrodes
title_full_unstemmed Electrochemical behaviour of different redox probes on single wall carbon nanotube buckypaper-modified electrodes
title_sort Electrochemical behaviour of different redox probes on single wall carbon nanotube buckypaper-modified electrodes
dc.creator.none.fl_str_mv Sieben, Juan Manuel
Ansón Casaos, A.
Montilla, F.
Martínez, M.T.
Morallón, E.
author Sieben, Juan Manuel
author_facet Sieben, Juan Manuel
Ansón Casaos, A.
Montilla, F.
Martínez, M.T.
Morallón, E.
author_role author
author2 Ansón Casaos, A.
Montilla, F.
Martínez, M.T.
Morallón, E.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Buckypaper
Electrochemical Properties
Redox Probes
Single-Walled Carbon Nanotubes
topic Buckypaper
Electrochemical Properties
Redox Probes
Single-Walled Carbon Nanotubes
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In the present work, the electrochemical properties of single-walled carbon nanotube buckypapers (BPs) were examined in terms of carbon nanotubes nature and preparation conditions. The performance of the different free-standing single wall carbon nanotube sheets was evaluated via cyclic voltammetry of several redox probes in aqueous electrolyte. Significant differences are observed in the electron transfer kinetics of the buckypaper-modified electrodes for both the outer- and inner-sphere redox systems. These differences can be ascribed to the nature of the carbon nanotubes (nanotube diameter, chirality and aspect ratio), surface oxidation degree and type of functionalities. In the case of dopamine, ferrocene/ferrocenium, and quinone/hydroquinone redox systems the voltammetric response should be thought as a complex contribution of different tips and sidewall domains which act as mediators for the electron transfer between the adsorbate species and the molecules in solution. In the other redox systems only nanotube ends are active sites for the electron transfer. It is also interesting to point out that a higher electroactive surface area not always lead to an improvement in the electron transfer rate of various redox systems. In addition, the current densities produced by the redox reactions studied here are high enough to ensure a proper electrochemical signal, which enables the use of BPs in sensing devices.
Fil: Sieben, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur; Argentina
Fil: Ansón Casaos, A.. Consejo Superior de Investigaciones Científicas. Instituto de Carboquímica; España
Fil: Montilla, F.. Universidad de Alicante; España
Fil: Martínez, M.T.. Consejo Superior de Investigaciones Científicas. Instituto de Carboquímica; España
Fil: Morallón, E.. Universidad de Alicante; España
description In the present work, the electrochemical properties of single-walled carbon nanotube buckypapers (BPs) were examined in terms of carbon nanotubes nature and preparation conditions. The performance of the different free-standing single wall carbon nanotube sheets was evaluated via cyclic voltammetry of several redox probes in aqueous electrolyte. Significant differences are observed in the electron transfer kinetics of the buckypaper-modified electrodes for both the outer- and inner-sphere redox systems. These differences can be ascribed to the nature of the carbon nanotubes (nanotube diameter, chirality and aspect ratio), surface oxidation degree and type of functionalities. In the case of dopamine, ferrocene/ferrocenium, and quinone/hydroquinone redox systems the voltammetric response should be thought as a complex contribution of different tips and sidewall domains which act as mediators for the electron transfer between the adsorbate species and the molecules in solution. In the other redox systems only nanotube ends are active sites for the electron transfer. It is also interesting to point out that a higher electroactive surface area not always lead to an improvement in the electron transfer rate of various redox systems. In addition, the current densities produced by the redox reactions studied here are high enough to ensure a proper electrochemical signal, which enables the use of BPs in sensing devices.
publishDate 2014
dc.date.none.fl_str_mv 2014-05-10
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/11336/80064
Sieben, Juan Manuel; Ansón Casaos, A.; Montilla, F.; Martínez, M.T.; Morallón, E.; Electrochemical behaviour of different redox probes on single wall carbon nanotube buckypaper-modified electrodes; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 135; 10-5-2014; 404-411
0013-4686
CONICET Digital
CONICET
url http://hdl.handle.net/11336/80064
identifier_str_mv Sieben, Juan Manuel; Ansón Casaos, A.; Montilla, F.; Martínez, M.T.; Morallón, E.; Electrochemical behaviour of different redox probes on single wall carbon nanotube buckypaper-modified electrodes; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 135; 10-5-2014; 404-411
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/http://www.sciencedirect.com/science/article/pii/S0013468614009839
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2014.05.016
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_ 1844613482571366400
score 13.070432

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