Syntheses, Crystal Structures, and Spectroscopic Studies of Uranyl Oxide Hydrate Phases with La(III)/Nd(III) Ions.
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DOI: 10.1021/acs.inorgchem.9b01102
Abstract: We have synthesized two uranyl oxide hydrate (UOH) phases incorporating La(III) or Nd(III) ions under hydrothermal conditions. Investigations with scanning electron microscopy and transmission electron microscopy (TEM) revealed thin-plate morphologies with a U-to-Ln atomic ratio… read more here.
Keywords: iii iii; iii ions; microscopy; oxide hydrate ... See more keywords
Layer-structured uranyl-oxide hydroxy-hydrates with Pr(iii) and Tb(iii) ions: hydroxyl to oxo transition driven by interlayer cations.
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DOI: 10.1039/d0dt00526f
Abstract: We report the hydrothermal synthesis and characterization of two uranyl-oxide hydroxy-hydrate compounds with Pr(iii) (U-Pr) and Tb(iii) (U-Tb) ions prepared via direct hydrothermal reactions of lanthanide (Ln = Pr or Tb) ions with a uranyl-oxide… read more here.
Keywords: iii iii; oxide hydroxy; iii ions; hydroxyl oxo ... See more keywords
Uranyl oxide hydrate frameworks with lanthanide ions.
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DOI: 10.1039/d0dt02944k
Abstract: Two uranyl oxide hydrate frameworks (UOFs) incorporating either Eu(iii) or Gd(iii) ions were synthesized hydrothermally and structurally studied. The uranyl oxide hydroxide layers similar to those in β-U3O8 with both tetragonal and pentagonal bipyramidal uranium… read more here.
Keywords: hydrate frameworks; lanthanide ions; spectroscopy; oxide hydrate ... See more keywords
A family of uranyl oxide hydrate phases with bivalent cations [MII(H2O)4][(UO2)3O3(OH)2]·H2O (MII – Mn, Co, Ni, Zn): synthesis, characterization and chemical stability in aqueous solutions
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DOI: 10.1039/d1nj01414e
Abstract: A series of new uranium compounds [MII(H2O)3][(UO2)3O3(OH)2]·2H2O (MII – Mn, Co, Ni, Zn) were synthesized for binding radionuclides in the environment and nuclear fuel cycle. read more here.
Keywords: mii h2o; family uranyl; h2o uo2; uo2 3o3 ... See more keywords
Uranyl-oxide hydroxy-hydrate minerals: their structural complexity and evolution trends
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DOI: 10.1127/ejm/2017/0029-2690
Abstract: Uranyl-oxide hydroxy-hydrates (UOH’s) represent one of the most structurally and chemically complex families of naturally occurring U 6+ phases. To date, about 28 members are known as mineral species and a dozen others have been… read more here.
Keywords: structural complexity; structural chemical; oxide hydroxy; complexity ... See more keywords
The new K, Pb-bearing uranyl-oxide mineral kroupaite: Crystal-chemical implications for the structures of uranyl-oxide hydroxy-hydrates
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DOI: 10.2138/am-2020-7311
Abstract: Abstract Kroupaite (IMA 2017-031), ideally KPb0.5[(UO2)8O4(OH)10]·10H2O, is a new uranyl-oxide hydroxyl-hydrate mineral found underground in the Svornost mine, Jáchymov, Czechia. Electron-probe microanalysis (WDS) provided the empirical formula (K1.28Na0.07)Σ1.35(Pb0.23Cu0.14Ca0.05Bi0.03Co0.02Al0.01)Σ0.48 [(UO2)7.90(SO4)0.04O4.04(OH)10.00]·10H2O, on the basis of 40 O… read more here.
Keywords: mineral; oxide hydroxy; crystal chemical; kroupaite ... See more keywords