抄録
We synthesized nano sized cerium and zirconium oxide particles by the hydrothermal treatment of precipitates formed from the chlorides of each metal ion. Especially the cerium oxide particles had plate-like shapes with the particle size in the range of 2-20 run. Even in the particle size of 2nm, most of the cerium oxide particles observed by a high resolution transmission electron microscope showed clear lattice images based on (111) and (200) planes indicating the plate-like single crystals. In the zirconium oxide particles, it was confirmed that the single phases of monoclinic and tetragonal crystals were obtained by the hydrothermal treatment lower than 200°C maintaining the particle size of about 10nm.
