Electrokinetics of charged spherical colloidal particles taking into account the effect of ion size constraints

Autores
López García, José Juan; Aranda Rascón, M. J.; Grosse, Constantino; Horno, José
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The electrokinetic properties of suspended spherical particles are examined using a modified standard electrokinetic model, which takes into account the finite ion size and considers that the minimum approach distance of ions to the particle surface need not be equal to their effective radius in the bulk solution. We calculate the conductivity increment and the electrophoretic mobility and present a detailed interpretation of the obtained results, based on the analysis of the equilibrium and field-induced ion concentrations, as well as the convective fluid flow in the neighborhood of the particle surface. We show that when charge reversal takes place, the sign of the concentration polarization remains unchanged while the sign of the electrophoretic mobility only changes under favorable circumstances.
Fil: López García, José Juan. Universidad de Jaén; España
Fil: Aranda Rascón, M. J.. Universidad de Jaén; España
Fil: Grosse, Constantino. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física; Argentina
Fil: Horno, José. Universidad de Jaén; España
Materia
Charge Reversal
Colloids
Electrokinetic Phenomena
Finite Ion Size
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:11336/71979
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Electrokinetics of charged spherical colloidal particles taking into account the effect of ion size constraintsLópez García, José JuanAranda Rascón, M. J.Grosse, ConstantinoHorno, JoséCharge ReversalColloidsElectrokinetic PhenomenaFinite Ion Sizehttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The electrokinetic properties of suspended spherical particles are examined using a modified standard electrokinetic model, which takes into account the finite ion size and considers that the minimum approach distance of ions to the particle surface need not be equal to their effective radius in the bulk solution. We calculate the conductivity increment and the electrophoretic mobility and present a detailed interpretation of the obtained results, based on the analysis of the equilibrium and field-induced ion concentrations, as well as the convective fluid flow in the neighborhood of the particle surface. We show that when charge reversal takes place, the sign of the concentration polarization remains unchanged while the sign of the electrophoretic mobility only changes under favorable circumstances.Fil: López García, José Juan. Universidad de Jaén; EspañaFil: Aranda Rascón, M. J.. Universidad de Jaén; EspañaFil: Grosse, Constantino. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física; ArgentinaFil: Horno, José. Universidad de Jaén; EspañaAcademic Press Inc Elsevier Science2011-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/71979López García, José Juan; Aranda Rascón, M. J.; Grosse, Constantino; Horno, José; Electrokinetics of charged spherical colloidal particles taking into account the effect of ion size constraints; Academic Press Inc Elsevier Science; Journal of Colloid and Interface Science; 356; 1; 4-2011; 325-3300021-9797CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jcis.2010.12.063info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S002197971001444Xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:00:36Zoai:ri.conicet.gov.ar:11336/71979instacron: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:34982025-10-15 15:00:36.443CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Electrokinetics of charged spherical colloidal particles taking into account the effect of ion size constraints
title Electrokinetics of charged spherical colloidal particles taking into account the effect of ion size constraints
spellingShingle Electrokinetics of charged spherical colloidal particles taking into account the effect of ion size constraints
López García, José Juan
Charge Reversal
Colloids
Electrokinetic Phenomena
Finite Ion Size
title_short Electrokinetics of charged spherical colloidal particles taking into account the effect of ion size constraints
title_full Electrokinetics of charged spherical colloidal particles taking into account the effect of ion size constraints
title_fullStr Electrokinetics of charged spherical colloidal particles taking into account the effect of ion size constraints
title_full_unstemmed Electrokinetics of charged spherical colloidal particles taking into account the effect of ion size constraints
title_sort Electrokinetics of charged spherical colloidal particles taking into account the effect of ion size constraints
dc.creator.none.fl_str_mv López García, José Juan
Aranda Rascón, M. J.
Grosse, Constantino
Horno, José
author López García, José Juan
author_facet López García, José Juan
Aranda Rascón, M. J.
Grosse, Constantino
Horno, José
author_role author
author2 Aranda Rascón, M. J.
Grosse, Constantino
Horno, José
author2_role author
author
author
dc.subject.none.fl_str_mv Charge Reversal
Colloids
Electrokinetic Phenomena
Finite Ion Size
topic Charge Reversal
Colloids
Electrokinetic Phenomena
Finite Ion Size
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The electrokinetic properties of suspended spherical particles are examined using a modified standard electrokinetic model, which takes into account the finite ion size and considers that the minimum approach distance of ions to the particle surface need not be equal to their effective radius in the bulk solution. We calculate the conductivity increment and the electrophoretic mobility and present a detailed interpretation of the obtained results, based on the analysis of the equilibrium and field-induced ion concentrations, as well as the convective fluid flow in the neighborhood of the particle surface. We show that when charge reversal takes place, the sign of the concentration polarization remains unchanged while the sign of the electrophoretic mobility only changes under favorable circumstances.
Fil: López García, José Juan. Universidad de Jaén; España
Fil: Aranda Rascón, M. J.. Universidad de Jaén; España
Fil: Grosse, Constantino. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física; Argentina
Fil: Horno, José. Universidad de Jaén; España
description The electrokinetic properties of suspended spherical particles are examined using a modified standard electrokinetic model, which takes into account the finite ion size and considers that the minimum approach distance of ions to the particle surface need not be equal to their effective radius in the bulk solution. We calculate the conductivity increment and the electrophoretic mobility and present a detailed interpretation of the obtained results, based on the analysis of the equilibrium and field-induced ion concentrations, as well as the convective fluid flow in the neighborhood of the particle surface. We show that when charge reversal takes place, the sign of the concentration polarization remains unchanged while the sign of the electrophoretic mobility only changes under favorable circumstances.
publishDate 2011
dc.date.none.fl_str_mv 2011-04
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/11336/71979
López García, José Juan; Aranda Rascón, M. J.; Grosse, Constantino; Horno, José; Electrokinetics of charged spherical colloidal particles taking into account the effect of ion size constraints; Academic Press Inc Elsevier Science; Journal of Colloid and Interface Science; 356; 1; 4-2011; 325-330
0021-9797
CONICET Digital
CONICET
url http://hdl.handle.net/11336/71979
identifier_str_mv López García, José Juan; Aranda Rascón, M. J.; Grosse, Constantino; Horno, José; Electrokinetics of charged spherical colloidal particles taking into account the effect of ion size constraints; Academic Press Inc Elsevier Science; Journal of Colloid and Interface Science; 356; 1; 4-2011; 325-330
0021-9797
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jcis.2010.12.063
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S002197971001444X
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
application/pdf
dc.publisher.none.fl_str_mv Academic Press Inc Elsevier Science
publisher.none.fl_str_mv Academic Press Inc Elsevier Science
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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score 13.22299

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