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dc.contributor.author
Ostos, Francisco José
dc.contributor.author
Lebrón, José Antonio
dc.contributor.author
Moyá, María Luisa
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dc.contributor.author
Bernal, Eva
dc.contributor.author
Flores, Ana
dc.contributor.author
Lépori, Cristian Marcelo Oscar
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dc.contributor.author
Maestre, Ángeles
dc.contributor.author
Sánchez, Francisco
dc.contributor.author
López Cornejo, Pilar
dc.contributor.author
López López, Manuel Carlos
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dc.date.available
2022-12-26T17:56:00Z
dc.date.issued
2021-01
dc.identifier.citation
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
dc.identifier.issn
1661-6596
dc.identifier.uri
http://hdl.handle.net/11336/182378
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
MDPI AG
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ADSORPTION AND DISPERSION
dc.subject
CARBON NANOTUBES
dc.subject
ION-SELECTIVE ELECTRODES
dc.subject
IONIC SURFACTANTS
dc.subject
POTENTIOMETRIC TECHNIQUE
dc.subject.classification
Físico-Química, Ciencia de los Polímeros, Electroquímica
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dc.subject.classification
Ciencias Químicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Potentiometric study of carbon nanotube/surfactant interactions by ion-selective electrodes. Driving forces in the adsorption and dispersion processes
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-09-22T10:36:42Z
dc.identifier.eissn
1422-0067
dc.journal.volume
22
dc.journal.number
2
dc.journal.pagination
826-838
dc.journal.pais
Suiza
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dc.description.fil
Fil: Ostos, Francisco José. Universidad de Sevilla; España
dc.description.fil
Fil: Lebrón, José Antonio. Universidad de Sevilla; España
dc.description.fil
Fil: Moyá, María Luisa. Universidad de Sevilla; España
dc.description.fil
Fil: Bernal, Eva. Universidad de Sevilla; España
dc.description.fil
Fil: Flores, Ana. Universidad de Huelva; España
dc.description.fil
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
dc.description.fil
Fil: Maestre, Ángeles. Universidad de Huelva; España
dc.description.fil
Fil: Sánchez, Francisco. Universidad de Sevilla; España
dc.description.fil
Fil: López Cornejo, Pilar. Universidad de Sevilla; España
dc.description.fil
Fil: López López, Manuel Carlos. Universidad de Huelva; España
dc.journal.title
International Journal of Molecular Sciences
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/1422-0067/22/2/826
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3390/ijms22020826
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