One-pot preparation and uranyl adsorption properties of hierarchically porous zirconium titanium oxide beads using phase separation processes to vary macropore morphology

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dc.contributor.authorDrisko, GLen_AU
dc.contributor.authorKimling, MCen_AU
dc.contributor.authorScales, Nen_AU
dc.contributor.authorIde, Aen_AU
dc.contributor.authorSizgek, Een_AU
dc.contributor.authorCaruso, RAen_AU
dc.contributor.authorLuca, Ven_AU
dc.date.accessioned2011-01-05T04:26:52Zen_AU
dc.date.available2011-01-05T04:26:52Zen_AU
dc.date.issued2010-11-16en_AU
dc.date.statistics2010-11-16en_AU
dc.description.abstractA simple and engineering friendly one-step process has been used to prepare zirconium titanium mixed oxide beads with porosity on multiple length scales. In this facile synthesis, the bead diameter and the macroporosity can be conveniently controlled through minor alterations in the synthesis conditions. The precursor solution consisted of poly(acrylonitrile) dissolved in dimethyl sulfoxide to which was added block copolymer Pluronic F127 and metal alkoxides. The millimeter-sized spheres were fabricated with differing macropore dimensions and morphology through dropwise addition of the precursor solution into a gelation bath consisting of water (H2O beads) or liquid nitrogen (LN2 beads). The inorganic beads obtained after calcination (550°C in air) had surface areas of 140 and 128 m2 g−1, respectively, and had varied pore architectures. The H2O-derived beads had much larger macropores (5.7 μm) and smaller mesopores (6.3 nm) compared with the LN2-derived beads (0.8 μm and 24 nm, respectively). Pluronic F127 was an important addition to the precursor solution, as it resulted in increased surface area, pore volume, and compressive yield point. From nonambient XRD analysis, it was concluded that the zirconium and titanium were homogeneously mixed within the oxide. The beads were analyzed for surface accessibility and adsorption rate by monitoring the uptake of uranyl species from solution. The macropore diameter and morphology greatly impacted surface accessibility. Beads with larger macropores reached adsorption equilibrium much faster than the beads with a more tortuous macropore network. © 2010, American Chemical Societyen_AU
dc.identifier.citationDrisko, G. L., Kimling, M. C., Scales, N., Ide, A., Sizgek, E., Caruso, R. A., et al. (2010). One-pot preparation and uranyl adsorption properties of hierarchically porous zirconium titanium oxide beads using phase separation processes to vary macropore morphology. Langmuir, 26(22), 17581-17588. doi:10.1021/la103177hen_AU
dc.identifier.govdoc3101en_AU
dc.identifier.issn0743-7463en_AU
dc.identifier.issue22en_AU
dc.identifier.journaltitleLangmuiren_AU
dc.identifier.pagination17581-17588en_AU
dc.identifier.urihttp://dx.doi.org/10.1021/la103177hen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/2901en_AU
dc.identifier.volume26en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectZirconiumen_AU
dc.subjectTitanium oxidesen_AU
dc.subjectMorphologyen_AU
dc.subjectPorosityen_AU
dc.subjectAdsorptionen_AU
dc.subjectUranyl compoundsen_AU
dc.titleOne-pot preparation and uranyl adsorption properties of hierarchically porous zirconium titanium oxide beads using phase separation processes to vary macropore morphologyen_AU
dc.typeJournal Articleen_AU
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