Potentiometric study of carbon nanotube/surfactant interactions by ion-selective electrodes. Driving forces in the adsorption and dispersion processes
- 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
- Año de publicación
- 2021
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- 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.
Fil: Ostos, Francisco José. Universidad de Sevilla; España
Fil: Lebrón, José Antonio. Universidad de Sevilla; España
Fil: Moyá, María Luisa. Universidad de Sevilla; España
Fil: Bernal, Eva. Universidad de Sevilla; España
Fil: Flores, Ana. Universidad de Huelva; España
Fil: 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; Argentina
Fil: Maestre, Ángeles. Universidad de Huelva; España
Fil: Sánchez, Francisco. Universidad de Sevilla; España
Fil: López Cornejo, Pilar. Universidad de Sevilla; España
Fil: López López, Manuel Carlos. Universidad de Huelva; España - Materia
-
ADSORPTION AND DISPERSION
CARBON NANOTUBES
ION-SELECTIVE ELECTRODES
IONIC SURFACTANTS
POTENTIOMETRIC TECHNIQUE - 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:11336/182378
Ver los metadatos del registro completo
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CONICET Digital (CONICET) |
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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 Técnicas2025-09-29T10:18:13Zoai: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:34982025-09-29 10:18:13.557CONICET 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 |
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 |
topic |
ADSORPTION AND DISPERSION CARBON NANOTUBES ION-SELECTIVE ELECTRODES IONIC SURFACTANTS POTENTIOMETRIC TECHNIQUE |
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 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; España Fil: Lebrón, José Antonio. Universidad de Sevilla; España Fil: Moyá, María Luisa. Universidad de Sevilla; España Fil: Bernal, Eva. Universidad de Sevilla; España Fil: Flores, Ana. Universidad de Huelva; España Fil: 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; Argentina Fil: Maestre, Ángeles. Universidad de Huelva; España Fil: Sánchez, Francisco. Universidad de Sevilla; España Fil: López Cornejo, Pilar. Universidad de Sevilla; España Fil: López López, Manuel Carlos. Universidad de Huelva; España |
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 |
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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1844614141638082560 |
score |
13.070432 |