Potentiometric study of carbon nanotube/surfactant interactions by ion-selective electrodes. Driving forces in the adsorption and dispersion processes

The interaction (adsorption process) of commercial ionic surfactants with non-functionalized and functionalized carbon nanotubes (CNTs) has been studied by potentiometric measurements based on the use of ion-selective electrodes. The goal of this work was to investigate the role of the CNTs' ch...

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Autores: Ostos, Francisco José, Lebrón, José Antonio, Moyá, María Luisa, Bernal, Eva, Flores, Ana, Lépori, Cristian Marcelo Oscar, Maestre, Ángeles, Sánchez, Francisco, López Cornejo, Pilar, López López, Manuel Carlos
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/182378
Acceso en línea:http://hdl.handle.net/11336/182378
Access Level:acceso abierto
Palabra clave:ADSORPTION AND DISPERSION
CARBON NANOTUBES
ION-SELECTIVE ELECTRODES
IONIC SURFACTANTS
POTENTIOMETRIC TECHNIQUE
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
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spelling Potentiometric study of carbon nanotube/surfactant interactions by ion-selective electrodes. Driving forces in the adsorption and dispersion processesOstos, Francisco JoséLebrón, José AntonioMoyá, María LuisaBernal, EvaFlores, AnaLépori, Cristian Marcelo OscarMaestre, ÁngelesSánchez, FranciscoLópez Cornejo, PilarLópez López, Manuel CarlosADSORPTION AND DISPERSIONCARBON NANOTUBESION-SELECTIVE ELECTRODESIONIC SURFACTANTSPOTENTIOMETRIC TECHNIQUEhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The interaction (adsorption process) of commercial ionic surfactants with non-functionalized and functionalized carbon nanotubes (CNTs) has been studied by potentiometric measurements based on the use of ion-selective electrodes. The goal of this work was to investigate the role of the CNTs' charge and structure in the CNT/surfactant interactions. Non-functionalized single- (SWCNT) and multi-walled carbon nanotubes (MWCNT), and amine functionalized SWCNT were used. The influence of the surfactant architecture on the CNT/surfactant interactions was also studied. Surfactants with different charge and hydrophobic tail length (sodium dodecyl sulfate (SDS), octyltrimethyl ammonium bromide (OTAB), dodecyltrimethyl ammonium bromide (DoTAB) and hexadecyltrimethyl ammonium bromide (CTAB)) were studied. According to the results, the adsorption process shows a cooperative character, with the hydrophobic interaction contribution playing a key role. This is made evident by the correlation between the free surfactant concentration (at a fixed [CNT]) and the critical micellar concentration, cmc, found for all the CNTs and surfactants investigated. The electrostatic interactions mainly determine the CNT dispersion, although hydrophobic interactions also contribute to this process.Fil: Ostos, Francisco José. Universidad de Sevilla; EspañaFil: Lebrón, José Antonio. Universidad de Sevilla; EspañaFil: Moyá, María Luisa. Universidad de Sevilla; EspañaFil: Bernal, Eva. Universidad de Sevilla; EspañaFil: Flores, Ana. Universidad de Huelva; EspañaFil: Lépori, Cristian Marcelo Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaFil: Maestre, Ángeles. Universidad de Huelva; EspañaFil: Sánchez, Francisco. Universidad de Sevilla; EspañaFil: López Cornejo, Pilar. Universidad de Sevilla; EspañaFil: López López, Manuel Carlos. Universidad de Huelva; EspañaMDPI AG2021-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/182378Ostos, Francisco José; Lebrón, José Antonio; Moyá, María Luisa; Bernal, Eva; Flores, Ana; et al.; Potentiometric study of carbon nanotube/surfactant interactions by ion-selective electrodes. Driving forces in the adsorption and dispersion processes; MDPI AG; International Journal of Molecular Sciences; 22; 2; 1-2021; 826-8381661-65961422-0067CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/1422-0067/22/2/826info:eu-repo/semantics/altIdentifier/doi/10.3390/ijms22020826info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T14:07:07Zoai:ri.conicet.gov.ar:11336/182378instacron: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:34982024-05-08 14:07:07.33CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Potentiometric study of carbon nanotube/surfactant interactions by ion-selective electrodes. Driving forces in the adsorption and dispersion processes
title Potentiometric study of carbon nanotube/surfactant interactions by ion-selective electrodes. Driving forces in the adsorption and dispersion processes
spellingShingle Potentiometric study of carbon nanotube/surfactant interactions by ion-selective electrodes. Driving forces in the adsorption and dispersion processes
Ostos, Francisco José
ADSORPTION AND DISPERSION
CARBON NANOTUBES
ION-SELECTIVE ELECTRODES
IONIC SURFACTANTS
POTENTIOMETRIC TECHNIQUE
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
title_short Potentiometric study of carbon nanotube/surfactant interactions by ion-selective electrodes. Driving forces in the adsorption and dispersion processes
title_full Potentiometric study of carbon nanotube/surfactant interactions by ion-selective electrodes. Driving forces in the adsorption and dispersion processes
title_fullStr Potentiometric study of carbon nanotube/surfactant interactions by ion-selective electrodes. Driving forces in the adsorption and dispersion processes
title_full_unstemmed Potentiometric study of carbon nanotube/surfactant interactions by ion-selective electrodes. Driving forces in the adsorption and dispersion processes
title_sort Potentiometric study of carbon nanotube/surfactant interactions by ion-selective electrodes. Driving forces in the adsorption and dispersion processes
dc.creator.none.fl_str_mv Ostos, Francisco José
Lebrón, José Antonio
Moyá, María Luisa
Bernal, Eva
Flores, Ana
Lépori, Cristian Marcelo Oscar
Maestre, Ángeles
Sánchez, Francisco
López Cornejo, Pilar
López López, Manuel Carlos
author Ostos, Francisco José
author_facet Ostos, Francisco José
Lebrón, José Antonio
Moyá, María Luisa
Bernal, Eva
Flores, Ana
Lépori, Cristian Marcelo Oscar
Maestre, Ángeles
Sánchez, Francisco
López Cornejo, Pilar
López López, Manuel Carlos
author_role author
author2 Lebrón, José Antonio
Moyá, María Luisa
Bernal, Eva
Flores, Ana
Lépori, Cristian Marcelo Oscar
Maestre, Ángeles
Sánchez, Francisco
López Cornejo, Pilar
López López, Manuel Carlos
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv ADSORPTION AND DISPERSION
CARBON NANOTUBES
ION-SELECTIVE ELECTRODES
IONIC SURFACTANTS
POTENTIOMETRIC TECHNIQUE
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
topic ADSORPTION AND DISPERSION
CARBON NANOTUBES
ION-SELECTIVE ELECTRODES
IONIC SURFACTANTS
POTENTIOMETRIC TECHNIQUE
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
description The interaction (adsorption process) of commercial ionic surfactants with non-functionalized and functionalized carbon nanotubes (CNTs) has been studied by potentiometric measurements based on the use of ion-selective electrodes. The goal of this work was to investigate the role of the CNTs' charge and structure in the CNT/surfactant interactions. Non-functionalized single- (SWCNT) and multi-walled carbon nanotubes (MWCNT), and amine functionalized SWCNT were used. The influence of the surfactant architecture on the CNT/surfactant interactions was also studied. Surfactants with different charge and hydrophobic tail length (sodium dodecyl sulfate (SDS), octyltrimethyl ammonium bromide (OTAB), dodecyltrimethyl ammonium bromide (DoTAB) and hexadecyltrimethyl ammonium bromide (CTAB)) were studied. According to the results, the adsorption process shows a cooperative character, with the hydrophobic interaction contribution playing a key role. This is made evident by the correlation between the free surfactant concentration (at a fixed [CNT]) and the critical micellar concentration, cmc, found for all the CNTs and surfactants investigated. The electrostatic interactions mainly determine the CNT dispersion, although hydrophobic interactions also contribute to this process.
publishDate 2021
dc.date.none.fl_str_mv 2021-01
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/11336/182378
Ostos, Francisco José; Lebrón, José Antonio; Moyá, María Luisa; Bernal, Eva; Flores, Ana; et al.; Potentiometric study of carbon nanotube/surfactant interactions by ion-selective electrodes. Driving forces in the adsorption and dispersion processes; MDPI AG; International Journal of Molecular Sciences; 22; 2; 1-2021; 826-838
1661-6596
1422-0067
CONICET Digital
CONICET
url http://hdl.handle.net/11336/182378
identifier_str_mv Ostos, Francisco José; Lebrón, José Antonio; Moyá, María Luisa; Bernal, Eva; Flores, Ana; et al.; Potentiometric study of carbon nanotube/surfactant interactions by ion-selective electrodes. Driving forces in the adsorption and dispersion processes; MDPI AG; International Journal of Molecular Sciences; 22; 2; 1-2021; 826-838
1661-6596
1422-0067
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.mdpi.com/1422-0067/22/2/826
info:eu-repo/semantics/altIdentifier/doi/10.3390/ijms22020826
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 MDPI AG
publisher.none.fl_str_mv MDPI AG
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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 15,811543

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