| 초록 |
Gd doped CeO2 nanopowders were prepared under low temperature and high pressure conditions by precipitation from metal nitrates with aqueous ammonium hydroxide. Gd doped Ceria nanopowders were obtained by a reaction at the temperature range of 120℃~180℃ for 6h. The average size and size distribution of the synthesized particles were around 10nm and narrow, respectively. The specific surface area of the synthesized Gd doped CeO2 particles above 70m2/g. The XRD diffraction pattern shows that the synthesized powders were crystalline. This study has shown that the synthesis of Gd doped CeO2 nanopowders is possible under solvothermal conditions in distilled water/etanol solution. The effects of synthesis parameters, such as the solvent ratio of starting solution, pH of starting solution, reaction temperature and time, are discussed. |
