摘要
采用水热法合成了多种掺杂CeO2纳米粉,并研究其烧结性能,发现不同类型的金属氧化物掺杂对CeO2纳米粉的烧结性能有不同的影响。CdO有助于CeO2的烧结生长,而Al2O3,ZrO2则阻碍CeO2的烧结生长:MgO,CaO,SrO,BaO在较低温度下阻碍CeO2的烧结生长,在较高温度下则反而有助于CeO2的烧结生长,同时结晶析出杂质相。
Pure and metal-oxide-doped nanocrystalline ceria has been prepared by the hydrothermal technique, and the samples annealed at different temperatures to study the interaction between dopants and the ceria. The results indicated that CdO enhanced the growth of ceria particles while Al2O3 and ZrO2 hindered it. MgO, CaO, SrO and BaO only hindered the ceria-particle growth at lower temperatures. At higher temperatures, as the impurity phases crystallized, they no longer hindered the growth of ceria particles.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2002年第4期291-294,共4页
Rare Metal Materials and Engineering
关键词
掺杂纳米CeO2
水热法
热稳定性
dopped
ceria
nanocrystalline
hydrothermal technique
thermal stability