Hydrothermal decomposition of actinide(IV) oxalates: a new aqueous route towards reactive actinide oxide nanocrystals
Hydrothermal decomposition of actinide (IV) oxalates (An= Th, U, Pu) at temperatures between 95 and 250°C leads to the production of highly crystalline, actinide oxides nanocrystals (NC's). This aqueous process proved to be quantitative, reproducible and fast (depending on temperature). The NC’s obtained were characterised by X-ray diffraction and TEM showing their size is smaller than 15 nm. Attempts to extend this general approach towards transition metal or lanthanide oxalates failed in the 95-250 oC temperature range. The hydrothermal decomposition of actinide oxalates is therefore a clean, flexible and powerful approach towards NC’s of AnO2 with possible scale-up potential.
WALTER Olaf;
POPA Karin;
DIESTE BLANCO Oliver;
2016-12-01
DE GRUYTER OPEN LTD
JRC102310
2391-5420,
https://publications.jrc.ec.europa.eu/repository/handle/JRC102310,
10.1515/chem-2016-0018,
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