Uranium Dioxide nanoparticulated materials

SOLDATI, ANALIA L.; LAGO, DIANA; PRADO, MIGUEL OSCAR

Nuclear Materials (working title)

Intechopen

Lugar: Londres; Año: 2020; p. 1 - 13

Nanostructured actinide materialshave gain the attention of the nuclear community after the discovery ofenhanced  properties in fuels thatundergo high burn up. On these conditions, the UO2 grains experimented recrystallization and formed a new rim of  UO2 nanoparticles, called HighBurn up Structures (HBS). The pellets with HBS showed closed porosity withbetter fission gas retention and radiation tolerance, ameliorated mechanicalproperties, and less detriment of the thermal conductivity upon use. In thischapter, we will review different ways to obtain Uranium nanoparticles, withemphasis on their synthesis and characterization. In particular, we willcomment on radiation chemical syntheses, organic precursors assisted syntheses,denitration processes and biologically mediated syntheses.