Uranium sorption on various forms of titanium dioxide - influence of surface area, surface charge and impurities

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dc.contributor.authorComarmond, MJen_AU
dc.contributor.authorPayne, TEen_AU
dc.contributor.authorHarrison, JJen_AU
dc.contributor.authorThiruvoth, Sen_AU
dc.contributor.authorWong, HKYen_AU
dc.contributor.authorAughterson, RDen_AU
dc.contributor.authorLumpkin, GRen_AU
dc.contributor.authorMüller, Ken_AU
dc.contributor.authorFoerstendorf, Hen_AU
dc.date.accessioned2012-04-18T05:18:07Zen_AU
dc.date.available2012-04-18T05:18:07Zen_AU
dc.date.issued2011-07-01en_AU
dc.date.statistics2012-04-18en_AU
dc.description.abstractTitanium dioxide (TiO(2)) has often served as a model substrate for experimental sorption studies of environmental contaminants. However, various forms of Ti-oxide have been used, and the different sorption properties of these materials have not been thoroughly studied. We investigated uranium sorption on some thoroughly characterized TiO(2) surfaces with particular attention to the influence of surface area, surface charge, and impurities. The sorption of U(VI) differed significantly between samples. Aggressive pretreatment of one material to remove impurities significantly altered the isoelectric point, determined by an electroacoustic method, but did not significantly impact U sorption. Differences in sorption properties between the various TiO(2) materials were related to the crystallographic form, morphology, surface area, and grain size, rather than to surface impurities or surface charge. In-situ attenuated total reflection Fourier-transform infrared (ATR FT-IR) spectroscopic studies showed that the spectra of the surface species of the TiO(2) samples are not significantly different, suggesting the formation of similar surface complexes. The data provide insights into the effect of different source materials and surface properties on radionuclide sorption. © 2011, American Chemical Societyen_AU
dc.identifier.citationComarmond, M. J., Payne, T. E., Harrison, J. J., Thiruvoth, S., Wong, H. K., Aughterson, R. D., Lumpkin, G. R., Muller, K., Foerstendorf, H., (2011). Uranium sorption on various forms of titanium dioxide - influence of surface area, surface charge and impurities. Environmental Science & Technology, 45(13), 5536-5542. doi:10.1021/es201046xen_AU
dc.identifier.govdoc4074en_AU
dc.identifier.issn0013-936Xen_AU
dc.identifier.issue13en_AU
dc.identifier.journaltitleEnvironmental Science & Technologyen_AU
dc.identifier.pagination5536-5542en_AU
dc.identifier.urihttp://dx.doi.org/10.1021/es201046xen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/4154en_AU
dc.identifier.volume45en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectUraniumen_AU
dc.subjectSorptionen_AU
dc.subjectTitaniumen_AU
dc.subjectImpuritiesen_AU
dc.subjectSpectroscopyen_AU
dc.subjectIonsen_AU
dc.titleUranium sorption on various forms of titanium dioxide - influence of surface area, surface charge and impuritiesen_AU
dc.typeJournal Articleen_AU
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