Synthesis and characterization of nanocrystalline U1-xPuxO2(+y) mixed oxides
We report here the first synthesis of mixed oxide U1-xPuxO2(þy) nanoparticles. The obtained nanopowders were characterized by X-ray diffraction, thermal ionization mass spectrometry, transmission electron microscopy, Raman spectroscopy, and U M4 edge high-energy-resolution X-ray absorption near edge structure (HR-XANES). The HR-XANES spectra give evidence for the partial oxidation of UIV to UV. This novel route toward the formation of actinide-actinide solid solution opens research opportunities that are not accessible using bulk materials. We give details on the X-ray diffraction study on plutonium oxalate hexahydrate, as a reagent for the synthesis of such nanoparticles.
KAURIC Guilhem;
WALTER Olaf;
BECK Aaron;
SCHACHERL Bianca;
DIESTE BLANCO Oliver;
VIGIER Jean-Francois;
ZULEGER Evelyn;
VITOVA Tonya;
POPA Karin;
2020-09-21
ELSEVIER
JRC119717
2590-0498 (online),
https://publications.jrc.ec.europa.eu/repository/handle/JRC119717,
10.1016/j.mtadv.2020.100105 (online),
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