Preparation and characterization of nanocrystalline CeO2

Nanocrystalline CeO2 of different sizes were prepared by calcining CeO2modify with oleic acid at different calcination temperatures, TEM analysis indicated that nanocrystalline CeO2 was spherical in shape.The average sizes and relative density of nanocrystalline CeO2 increased with the increas ofcalcination temperature .XRD patterns showed that the synthesized CeO2 was cLibic system and space group was O5H?FM 3M when calcination temperature was in the range of450-900°C.