Ion Distributions at the Nitrobenzene-Water Interface Electrified by a Common Ion

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dc.creatorLuo, Guangming
dc.creatorMalkova, Sarka
dc.creatorYoon, Jaesung
dc.creatorSchultz, David G.
dc.creatorLin, Binhua
dc.creatorMeron, Mati
dc.creatorBenjamin, Ilan
dc.creatorVanysek, Petr
dc.creatorSchlossman, Mark L.
dc.date2006-04-06
dc.date.accessioned2026-07-07T07:05:20Z
dc.date.available2026-07-07T07:05:20Z
dc.descriptionSynchrotron x-ray reflectivity is used to study ion distributions at the liquid-liquid interface between a nitrobenzene solution of tetrabutylammonium tetraphenylborate (TBATPB) and a water solution of tetrabutylammonium bromide (TBABr). The concentration of TBABr is varied to alter the ion distribution. Our x-ray measurements are inconsistent with several commonly used theories of ion distributions, including Gouy-Chapman, modified Verwey-Niessen, and the MPB5 version of the Poisson-Boltzmann equation. These structural measurements are described well by ion distributions predicted by a version of the Poisson-Boltzmann equation that explicitly includes a free energy profile for ion transfer across the interface when this profile is described by a simple analytic form or by a potential of mean force from molecular dynamics simulations. These x-ray measurements from the liquid-liquid interface provide evidence for the importance of interfacial liquid structure in determining interfacial ion distributions.
dc.description51 pages, 14 figures, to be published in Journal of Electroanalytical Chemistry
dc.identifierhttps://arxiv.org/abs/cond-mat/0604182
dc.identifierhttp://arxiv.org/abs/cond-mat/0604182
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109634
dc.subjectSoft Condensed Matter
dc.subjectStatistical Mechanics
dc.titleIon Distributions at the Nitrobenzene-Water Interface Electrified by a Common Ion
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