CeO2nanocrystals with different morphologies were synthesized with high temperature solution-phase method by decomposing cerium nitrate hexahydrate. The obtained samples were characterized by X-ray diffraction( XRD),transmission electron microscopy( TEM) and Fourier transform infrared spectroscopy( FTIR) to investigate the sizes,shapes and structures of the nanocrystals. The results show that by adjusting the synthesis condition parameters such as type of solvents and surfactants,nanoparticles with differen...