Influence of the dielectrophoretic force in mixed electrical double layers

Autores
López García, José Juan; Horno, José; Grosse, Constantino
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The equilibrium properties of a charged plane immersed in an aqueous electrolyte solution are examined using a generalized Poisson–Boltzmann equation that takes into account the finite ion size by modeling the solution as a suspension of polarizable insulating spheres in water. This formalism is applied to a general solution composed of two or more counterion species with different valences, sizes, and effective permittivity values. It is shown that, due to the dependence of the dielectrophoretic force on the ion size and effective permittivity value, the concentration of the smaller counterion strongly increases while that of the larger one decreases in the immediate vicinity of the charged surface. As a result the surface potential value strongly increases as compared to the usual modified Poisson–Boltzmann theory that only includes steric interactions among ions. This effect is particularly important in the case of mixtures of univalent and divalent counterions, being significant even for relatively low surface charge values.
Fil: López García, José Juan. Universidad de Jaén; España
Fil: Horno, José. Universidad de Jaén; España
Fil: Grosse, Constantino. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Mixed Electrical Double Layers
Ionsize Effect
Ion Permittivity Effect
Modified Poisson-Boltzmann Equation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/26381
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/26381
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Influence of the dielectrophoretic force in mixed electrical double layersLópez García, José JuanHorno, JoséGrosse, ConstantinoMixed Electrical Double LayersIonsize EffectIon Permittivity EffectModified Poisson-Boltzmann Equationhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The equilibrium properties of a charged plane immersed in an aqueous electrolyte solution are examined using a generalized Poisson–Boltzmann equation that takes into account the finite ion size by modeling the solution as a suspension of polarizable insulating spheres in water. This formalism is applied to a general solution composed of two or more counterion species with different valences, sizes, and effective permittivity values. It is shown that, due to the dependence of the dielectrophoretic force on the ion size and effective permittivity value, the concentration of the smaller counterion strongly increases while that of the larger one decreases in the immediate vicinity of the charged surface. As a result the surface potential value strongly increases as compared to the usual modified Poisson–Boltzmann theory that only includes steric interactions among ions. This effect is particularly important in the case of mixtures of univalent and divalent counterions, being significant even for relatively low surface charge values.Fil: López García, José Juan. Universidad de Jaén; EspañaFil: Horno, José. Universidad de Jaén; EspañaFil: Grosse, Constantino. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier Inc2013-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/26381López García, José Juan; Horno, José; Grosse, Constantino; Influence of the dielectrophoretic force in mixed electrical double layers; Elsevier Inc; Journal Of Colloid And Interface Science; 405; 5-2013; 336-3430021-9797CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jcis.2013.05.036info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S002197971300475Xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:15:00Zoai:ri.conicet.gov.ar:11336/26381instacron: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:34982025-10-22 12:15:00.317CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Influence of the dielectrophoretic force in mixed electrical double layers
title Influence of the dielectrophoretic force in mixed electrical double layers
spellingShingle Influence of the dielectrophoretic force in mixed electrical double layers
López García, José Juan
Mixed Electrical Double Layers
Ionsize Effect
Ion Permittivity Effect
Modified Poisson-Boltzmann Equation
title_short Influence of the dielectrophoretic force in mixed electrical double layers
title_full Influence of the dielectrophoretic force in mixed electrical double layers
title_fullStr Influence of the dielectrophoretic force in mixed electrical double layers
title_full_unstemmed Influence of the dielectrophoretic force in mixed electrical double layers
title_sort Influence of the dielectrophoretic force in mixed electrical double layers
dc.creator.none.fl_str_mv López García, José Juan
Horno, José
Grosse, Constantino
author López García, José Juan
author_facet López García, José Juan
Horno, José
Grosse, Constantino
author_role author
author2 Horno, José
Grosse, Constantino
author2_role author
author
dc.subject.none.fl_str_mv Mixed Electrical Double Layers
Ionsize Effect
Ion Permittivity Effect
Modified Poisson-Boltzmann Equation
topic Mixed Electrical Double Layers
Ionsize Effect
Ion Permittivity Effect
Modified Poisson-Boltzmann Equation
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 equilibrium properties of a charged plane immersed in an aqueous electrolyte solution are examined using a generalized Poisson–Boltzmann equation that takes into account the finite ion size by modeling the solution as a suspension of polarizable insulating spheres in water. This formalism is applied to a general solution composed of two or more counterion species with different valences, sizes, and effective permittivity values. It is shown that, due to the dependence of the dielectrophoretic force on the ion size and effective permittivity value, the concentration of the smaller counterion strongly increases while that of the larger one decreases in the immediate vicinity of the charged surface. As a result the surface potential value strongly increases as compared to the usual modified Poisson–Boltzmann theory that only includes steric interactions among ions. This effect is particularly important in the case of mixtures of univalent and divalent counterions, being significant even for relatively low surface charge values.
Fil: López García, José Juan. Universidad de Jaén; España
Fil: Horno, José. Universidad de Jaén; España
Fil: Grosse, Constantino. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description The equilibrium properties of a charged plane immersed in an aqueous electrolyte solution are examined using a generalized Poisson–Boltzmann equation that takes into account the finite ion size by modeling the solution as a suspension of polarizable insulating spheres in water. This formalism is applied to a general solution composed of two or more counterion species with different valences, sizes, and effective permittivity values. It is shown that, due to the dependence of the dielectrophoretic force on the ion size and effective permittivity value, the concentration of the smaller counterion strongly increases while that of the larger one decreases in the immediate vicinity of the charged surface. As a result the surface potential value strongly increases as compared to the usual modified Poisson–Boltzmann theory that only includes steric interactions among ions. This effect is particularly important in the case of mixtures of univalent and divalent counterions, being significant even for relatively low surface charge values.
publishDate 2013
dc.date.none.fl_str_mv 2013-05
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/11336/26381
López García, José Juan; Horno, José; Grosse, Constantino; Influence of the dielectrophoretic force in mixed electrical double layers; Elsevier Inc; Journal Of Colloid And Interface Science; 405; 5-2013; 336-343
0021-9797
CONICET Digital
CONICET
url http://hdl.handle.net/11336/26381
identifier_str_mv López García, José Juan; Horno, José; Grosse, Constantino; Influence of the dielectrophoretic force in mixed electrical double layers; Elsevier Inc; Journal Of Colloid And Interface Science; 405; 5-2013; 336-343
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.2013.05.036
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S002197971300475X
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Inc
publisher.none.fl_str_mv Elsevier Inc
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
_version_ 1846782560998260736
score 12.982451

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