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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/80064
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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 Técnicas2025-09-03T09:51:22Zoai: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:34982025-09-03 09:51:23.088CONICET 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 |
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1842269091844325376 |
score |
13.13397 |