000902538 001__ 902538 000902538 005__ 20240712112832.0 000902538 0247_ $$2doi$$a10.1039/D1DT03237B 000902538 0247_ $$2ISSN$$a0300-9246 000902538 0247_ $$2ISSN$$a1364-5447 000902538 0247_ $$2ISSN$$a(2001) 000902538 0247_ $$2ISSN$$a1470-479X 000902538 0247_ $$2ISSN$$a1477-9226 000902538 0247_ $$2ISSN$$a1477-9234 000902538 0247_ $$2ISSN$$a2050-5671 000902538 0247_ $$2Handle$$a2128/29354 000902538 0247_ $$2altmetric$$aaltmetric:117120872 000902538 0247_ $$2pmid$$a34786581 000902538 0247_ $$2WOS$$aWOS:000719430800001 000902538 037__ $$aFZJ-2021-04340 000902538 041__ $$aEnglish 000902538 082__ $$a540 000902538 1001_ $$0P:(DE-Juel1)176900$$aMurphy, Gabriel L.$$b0$$eCorresponding author 000902538 245__ $$aIncorporation of iodine into uranium oxyhydroxide phases 000902538 260__ $$aLondon$$bSoc.$$c2021 000902538 3367_ $$2DRIVER$$aarticle 000902538 3367_ $$2DataCite$$aOutput Types/Journal article 000902538 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1642755543_7161 000902538 3367_ $$2BibTeX$$aARTICLE 000902538 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000902538 3367_ $$00$$2EndNote$$aJournal Article 000902538 520__ $$aHerein, we have synthesised a novel uranium oxyhydroxide (UOH) phase, Rb2K2[(UO2)6O4(OH)6]·(IO3)2, under hydrothermal conditions which intercalates IO3− via a hybrid salt-inclusion and host–guest mechanism. The mechanism is based on favorable intermolecular bonding between disordered Rb+/K+ and IO3− ions and hydroxyl and layer void positions respectively. To examine whether the intercalation may occur ubiquitously for UOH phases, the known UOH mineral phases metaschoepite ([(UO2)8O2(OH)12]·12H2O), compreignacite (K2[(UO2)6O4(OH)6]·7H2O) and also related β-UO2(OH)2 were synthesised and exposed to aqueous I− and IO3− for 1 month statically at RT and 60 °C in air and the solid analysed using laser ablation inductively coupled plasma mass spectroscopy. Measurements indicate intercalation can occur homogeneously, but the affinity is dependent upon the structure of the UOH phases and temperature, where higher temperatures and when the interlayer space is free of initial moieties are favoured. It was also found that after repeated washing of the UOH samples with DI water the intercalated iodine was retained. 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