Zirconium organophosphonates as high capacity, selective lanthanide sorbents

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dc.contributor.authorVeliscek-Carolan, Jen_AU
dc.contributor.authorHanley, TLen_AU
dc.contributor.authorLuca, Ven_AU
dc.date.accessioned2016-12-06T00:40:59Zen_AU
dc.date.available2016-12-06T00:40:59Zen_AU
dc.date.issued2014-05-29en_AU
dc.date.statistics2016-12-06en_AU
dc.description.abstractNovel and versatile zirconium organophosphonate coordination networks have been developed as sorbent platforms via simple, low-temperature hydrothermal reactions of zirconium propoxide with amino tris(methylene phosphonic acid) (ATMP). The resulting materials exhibited hierarchical porosity and possessed exceptional selectively for lanthanide elements over mono- and divalent metal ions during competitive sorption experiments in 0.1 M HNO3, as well as modest intra-lanthanide selectivity. As such, the present materials have potential as solid phase extractants for lanthanide separations in applications including mining, radioactive waste treatment and environmental remediation. Lanthanide sorption was shown to occur via uncoordinated Psingle bondO groups in the ATMP molecule. The structure, porosity and sorption properties of the coordination network platform could be tuned through varying the molar ratio of phosphorus to zirconium. Interestingly, the sample with the lowest surface area (<2 m2/g) demonstrated the highest sorption capacity. Optimal compositions demonstrated europium sorption with fast kinetics and very high capacities of up to 0.63 g/mg min and 60 mg/g respectively. As such, these highly stable zirconium organophosphonates, prepared from inexpensive precursor chemicals using one-pot methods, perform comparably to costly commercially available polymer resins. © 2014, Elsevier B.V.en_AU
dc.identifier.citationVeliscek-Carolan, J., Hanley, T. L., & Luca, V. (2014). Zirconium organophosphonates as high capacity, selective lanthanide sorbents. Separation and Purification Technology, 129, 150-158. doi:10.1016/j.seppur.2014.03.028en_AU
dc.identifier.govdoc7667en_AU
dc.identifier.issn1383-5866en_AU
dc.identifier.journaltitleSeparation and Purification Technologyen_AU
dc.identifier.pagination150-158en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.seppur.2014.03.028en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/8122en_AU
dc.identifier.volume129en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectPorous materialsen_AU
dc.subjectRare earthsen_AU
dc.subjectSorptionen_AU
dc.subjectZirconium phosphatesen_AU
dc.subjectPhosphonic acidsen_AU
dc.subjectMetalsen_AU
dc.titleZirconium organophosphonates as high capacity, selective lanthanide sorbentsen_AU
dc.typeJournal Articleen_AU
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