Exploring the influence of pH on the structural intricacies of uranium oxide hydrates containing both Cd(ii) and K(i) ions

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dc.contributor.authorAblott, TAen_AU
dc.contributor.authorLu, KTen_AU
dc.contributor.authorWei, Ten_AU
dc.contributor.authorZhang, YJen_AU
dc.date.accessioned2023-06-28T02:45:46Zen_AU
dc.date.available2023-06-28T02:45:46Zen_AU
dc.date.issued2023-05-28en_AU
dc.date.statistics2023-06-07en_AU
dc.descriptionWe would like to thank I. Karatchevtseva for Raman measurement, the Nuclear Science and Technology (NST) at ANSTO for synthesis and characterization of materials. The crystallographic data for compounds UOH-Cd and UOF-Cd were collected on the MX2 beamline at the Australian Synchrotron, a part of ANSTO, and made use of the Australian Cancer Research Foundation (ACRF) detector.en_AU
dc.description.abstractWe report the synthesis of two new dual-cation uranium oxide hydrate (UOH) materials, containing both Cd2+ and K+ ions, along wxrith their characterisation by means of single-crystal X-ray diffraction and a range of other structural and spectroscopic techniques. The materials were found to differ in structures, topology and uranium to cation ratios, with the layered UOH-Cd crystallising in a plate morphology and containing a U : Cd : K ratio of 3 : 1.5 : 1. Conversely, the framework-type UOF-Cd incorporates much less Cd, with a U : Cd : K ratio of 4.4 : 0.2 : 1 and is found as needle-like crystals. A common feature in both structures is the presence of β-U3O8 type layers with a distinct uranium centre which lacks the expected uranyl bonds, highlighting the importance of the β-U3O8 layer in the subsequent self-assembly and preferential formation of a variety of structural types. Most importantly, by exploiting the additional flexibility provided by monovalent cation species (i.e., K+) as secondary metal cations to synthesise these novel dual-cation materials, this work highlights the potential for broadening the scope of viable synthetic UOH phases towards furthering the understanding of these systems in their roles as alteration products in the surrounds of spent nuclear fuel in deep geological repositories. © The Authors - Open Access CC BY Licenceen_AU
dc.identifier.citationAblott, T. A., Lu, K. T., Wei, T., & Zhang, Y. (2023). Exploring the influence of pH on the structural intricacies of uranium oxide hydrates containing both Cd(ii) and K(i) ions [10.1039/D3DT00630A]. Dalton Transactions, 52(20), 6629-6640.doi:10.1039/D3DT00630Aen_AU
dc.identifier.issn1477-9226en_AU
dc.identifier.issue20en_AU
dc.identifier.journaltitleDalton Transactionsen_AU
dc.identifier.pagination6629-6640en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15070en_AU
dc.identifier.volume52en_AU
dc.language.isoenen_AU
dc.publisherRoyal Society of Chemistryen_AU
dc.relation.urihttps://doi.org/10.1039/D3DT00630Aen_AU
dc.subjectUranium oxidesen_AU
dc.subjectCadmiumen_AU
dc.subjectPotassiumen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectCrystalsen_AU
dc.subjectLayersen_AU
dc.subjectCationsen_AU
dc.subjectSpent fuelsen_AU
dc.subjectGeologic depositsen_AU
dc.titleExploring the influence of pH on the structural intricacies of uranium oxide hydrates containing both Cd(ii) and K(i) ionsen_AU
dc.typeJournal Articleen_AU
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