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Specific ion effects: Interaction between nanoparticles in electrolyte solutions

Deniz, Vivianne; Bostrom, Mathias Anders; Bratko, D.; Tavares, Frederico W; Ninham, Barry

Description

Dependence of colloidal interactions on salt identity, observed frequently in experiments, can be accounted for once ion specific non-electrostatic forces are included in the theory. Ability to predict the effect of added salt on the phase diagram of colloid dispersions is essential for the design of processes involving nanocolloids. The Ornstein-Zernike equation with hypernetted chain closure approximation provides a viable first estimate for the potential of mean force between ionized...[Show more]

dc.contributor.authorDeniz, Vivianne
dc.contributor.authorBostrom, Mathias Anders
dc.contributor.authorBratko, D.
dc.contributor.authorTavares, Frederico W
dc.contributor.authorNinham, Barry
dc.date.accessioned2015-12-08T22:14:31Z
dc.identifier.issn0927-7757
dc.identifier.urihttp://hdl.handle.net/1885/30294
dc.description.abstractDependence of colloidal interactions on salt identity, observed frequently in experiments, can be accounted for once ion specific non-electrostatic forces are included in the theory. Ability to predict the effect of added salt on the phase diagram of colloid dispersions is essential for the design of processes involving nanocolloids. The Ornstein-Zernike equation with hypernetted chain closure approximation provides a viable first estimate for the potential of mean force between ionized nanoparticles like alumina aggregates in aqueous electrolytes subject to dispersion interactions with hydrated simple ions. Calculated potentials of mean force enable the prediction of osmotic second virial coefficients and phase diagrams showing a dramatic dependence on ion type. The choice of salt therefore provides an efficient, non-intrusive way to tune the phase behavior of nanoparticle dispersions.
dc.publisherElsevier
dc.sourceColloids and Surfaces A: Physicochemical and Engineering Aspects
dc.subjectKeywords: Alumina; Electrolytes; Electrostatics; Phase diagrams; Hofmeister effect; Ionic dispersion potentials; OZ-HNC integral equation; Nanoparticles; aluminum oxide; electrolyte; ion; nanoparticle; sodium chloride; aqueous solution; article; calculation; chemic Hofmeister effect; Ionic dispersion potentials; Nanoparticles; OZ-HNC integral equation; Phase diagram; Polarizability
dc.titleSpecific ion effects: Interaction between nanoparticles in electrolyte solutions
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume319
dc.date.issued2008
local.identifier.absfor030603 - Colloid and Surface Chemistry
local.identifier.ariespublicationu9210271xPUB72
local.type.statusPublished Version
local.contributor.affiliationDeniz, Vivianne, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationBostrom, Mathias Anders, Linkoping University
local.contributor.affiliationBratko, D., Virginia Commonwealth University
local.contributor.affiliationTavares, Frederico W, Universidade Federal do Rio de Janeiro
local.contributor.affiliationNinham, Barry, College of Physical and Mathematical Sciences, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.issue1-3
local.bibliographicCitation.startpage98
local.bibliographicCitation.lastpage102
local.identifier.doi10.1016/j.colsurfa.2007.08.020
dc.date.updated2015-12-08T07:52:04Z
local.identifier.scopusID2-s2.0-43049123463
local.identifier.thomsonID000257046000015
CollectionsANU Research Publications

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