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Investigation of uranium oxide hydrates with barium(ıı) ions: structural diversity, uranium valences and implications
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SYSNO ASEP 0574228 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Investigation of uranium oxide hydrates with barium(ıı) ions: structural diversity, uranium valences and implications Author(s) Lu, K.T. (AU)
Zhang, Y. (AU)
Wei, T. (AU)
Ablott, T.A. (AU)
Plášil, Jakub (FZU-D) RID, ORCID
Karatchevtseva, I. (AU)
Zheng, R. (AU)Number of authors 7 Source Title New Journal of Chemistry. - : Royal Society of Chemistry - ISSN 1144-0546
Roč. 47, č. 28 (2023), s. 13286-13296Number of pages 11 s. Language eng - English Country GB - United Kingdom Keywords Barium(II) ions ; Uranium oxides ; natural weathering ; x-ray diffraction ; crystal structure Subject RIV DB - Geology ; Mineralogy OECD category Mineralogy Method of publishing Open access Institutional support FZU-D - RVO:68378271 UT WOS 001021060400001 EID SCOPUS 85166291985 DOI 10.1039/d3nj01334k Annotation Although barium(II) ions play an important role in the natural weathering of the mineral uraninite (UO2+x) and are expected to therefore do the same for spent nuclear fuel in geological disposal, the detailed structural understanding of this role is rather limited. In this work, we report the synthesis and characterisation of two new uranium oxide hydrate (UOH) phases with barium(II) ions, a layer-structured UOH-Ba1 constructed with undulating uranyl oxide hydroxide layers incorporating hydrated interlayer barium(II) ions, and UOH-Ba2 forming a complex three-dimensional structure by linking six different types of uranium polyhedrons with barium(II) ions located in the narrow channels. Both crystal structures were revealed using synchrotron single crystal X-ray diffraction and confirmed with powder X-ray or electron diffractions.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2024 Electronic address https://hdl.handle.net/11104/0344570
Number of the records: 1