Flux crystal growth of Ba<sub>2</sub>[(UO<sub>2</sub>)<sub>2</sub>Ti<sub>2</sub>O<sub>8</sub>]: Structures, spectroscopies and implications
نویسندگان
چکیده
We report a flux crystal growth of Ba2[(UO2)2Ti2O8] and subsequent structural spectroscopic studies using multiple techniques. The layered structure, built up with sheets edge-sharing dimeric uranyl pentagonal bipyramids TiO5 square pyramids interlayer Ba(II) ions, was revealed by synchrotron single x-ray diffraction confirmed electron transmission microscope. presence only hexavalent uranium both diffuse reflectance absorption near-edge structure spectroscopies, consistent the bond valence sum calculations. Its vibrational modes were Raman spectroscopy. In addition, its implications as potential waste form for immobilization uranium-rich radioactive wastes discussed.
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ژورنال
عنوان ژورنال: Journal of the American Ceramic Society
سال: 2022
ISSN: ['0002-7820', '1551-2916']
DOI: https://doi.org/10.1111/jace.18792