Selective sorption of actinides by titania nanoparticles covalently functionalized with simple organic ligands

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dc.contributor.authorVeliscek-Carolan, Jen_AU
dc.contributor.authorJolliffe, KAen_AU
dc.contributor.authorHanley, TLen_AU
dc.date.accessioned2015-12-28T02:11:23Zen_AU
dc.date.available2015-12-28T02:11:23Zen_AU
dc.date.issued2012-11-01en_AU
dc.date.statistics2015-10-22en_AU
dc.description.abstractAlthough current and proposed reprocessing of used nuclear fuel is performed predominantly by solvent extraction processes, solid phase sorbent materials have many advantages including the ability to avoid production of large volumes of organic waste. Therefore, three titania nanoparticle based sorbent materials have been developed, functionalized with organic ligands designed to impart selectivity for elements relevant to important separations at the back end of the nuclear fuel cycle. A novel, simplified method of covalent functionalization to the titania surface has been utilized, and the resulting materials have been shown to be hydrolytically stable at pH 2. The sorption behavior of these organofunctionalized titania materials was investigated over a wide pH range with a selection of elements including fission products and actinides. Titania nanoparticles functionalized with an amine or phosphate moiety were able to demonstrate exclusive extraction of uranium under optimized conditions. Titania nanoparticles functionalized with a picolinamide moiety exhibited superior minor actinide sorption properties, in terms of both efficiency and selectivity, to solvent extraction processes using similar organic moieties. As such, organo-functionalized titania materials as solid phase sorbents show promise as a future alternative to solvent extraction processes for nuclear separations. © 2013, American Chemical Society.en_AU
dc.identifier.citationVeliscek-Carolan, J., Jolliffe, K. A., & Hanley, T. L. (2013). Selective sorption of actinides by titania nanoparticles covalently functionalized with simple organic ligands. ACS Applied Materials & Interfaces, 5(22), 11984-11994. doi:10.1021/am403727xen_AU
dc.identifier.govdoc6210en_AU
dc.identifier.issn1944-8244en_AU
dc.identifier.issue22en_AU
dc.identifier.journaltitleACS Applied Materials & Interfacesen_AU
dc.identifier.pagination11984-11994en_AU
dc.identifier.urihttp://dx.doi.org/10.1021/am403727xen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/6494en_AU
dc.identifier.volume5en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectNuclear fuelsen_AU
dc.subjectSolvent extractionen_AU
dc.subjectOrganic wastesen_AU
dc.subjectLigandsen_AU
dc.subjectpH valueen_AU
dc.subjectSeparation processesen_AU
dc.titleSelective sorption of actinides by titania nanoparticles covalently functionalized with simple organic ligandsen_AU
dc.typeJournal Articleen_AU
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