Show simple item record

dc.contributor.authorLee, Seung Yeon
dc.contributor.authorWelbourn, Rebecca
dc.contributor.authorClarke, Stuart
dc.contributor.authorSkoda, Maximilian WA
dc.contributor.authorClifton, Luke
dc.contributor.authorZarbakhsh, Ali
dc.date.accessioned2014-11-20T09:52:54Z
dc.date.available2014-11-20T09:52:54Z
dc.date.issued2013-10-01
dc.identifier.citation(2013) Journal of Colloid and Interface Science 407: 348-353
dc.identifier.issn0021-9797
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/246413
dc.description.abstractNeutron reflection and adsorption isotherm measurements have been used to study the adsorption behaviour of hexanoic acid onto α-alumina surfaces. Importantly, the pH dependence of the behaviour has been characterised with a pronounced maximum in adsorption identified at a pH of approximately 5, close to the pKa of the acid. The adsorbed layer is identified as a bilayer, which is reasonable given the hydrophilic nature of both side of the layer, and has a thickness of 13 Å, suggesting significant extent of interdigitation. At pH 5, the layer has much lower extent of hydration relative to the higher pH of 7, consistent with the increased total adsorption at pH 5. A number of different mechanisms for the binding of the hexanoic acid to the surface are considered. The experimental data, combined with calculations using equilibrium/binding constants of the surface and ligands, indicates that a ligand exchange reaction may be the most significant mechanism.
dc.languageEnglish
dc.language.isoen
dc.publisherElsevier BV
dc.titleAdsorption of sodium hexanoate on α-alumina.
dc.typeArticle
dc.description.versionThis is the author's accepted manuscript. The final version has been published by Elsevier in the Journal of Colloid and Interface Science here: http://www.sciencedirect.com/science/article/pii/S0021979713005560.
prism.endingPage353
prism.publicationDate2013
prism.publicationNameJ Colloid Interface Sci
prism.startingPage348
prism.volume407
dc.rioxxterms.funderBP
dcterms.dateAccepted2013-06-11
rioxxterms.versionofrecord10.1016/j.jcis.2013.06.019
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2013-06-27
dc.contributor.orcidClarke, Stuart [0000-0001-5224-2368]
dc.identifier.eissn1095-7103
rioxxterms.typeJournal Article/Review


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record