摘要
用阳离子表面活性剂十六烷基三甲基溴化胺(C19H42BrN)进行自组装,在水热条件下合成了高分散、近似球形、均匀粒径的氧化锆纳米晶体。用热重差示扫描、Fourier变换红外光谱、X射线衍射、透射电镜、可见-紫外光谱以及N2吸附脱附等方法对样品进行了表征分析。研究表明:阳离子表面活性剂对形成氧化锆纳米晶体具有明显的导向作用,500℃煅烧的样品其晶粒尺寸约为15 nm,分散性能良好,以四方相为主。
High dispersive and well-defined spherical zirconia nanocrystallites were synthesized by the self-assembly of a cationic surfactant under the hydrothermal conditions. Thermogravimetry-differential scanning calorimetry, Fourier transform infrared spectroscope, X-ray diffraction, transmission electron microscope, ultraviolet-visible spectroscope, and N2 adsorption -desorption analysis were used for the structural characterization. The results show that the cationic surfactant has a distinctly direct effect on the formation of zirconia nanocrystallites. The prepared sample exhibits good dispersion with a tetragonal phase as the main phase. The average nanocrystal size is about 15 nm after calcination at 500℃.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2006年第2期162-166,共5页
Journal of The Chinese Ceramic Society
基金
福建省科技厅高新科技重点(2004H008)资助项目
关键词
阳离子表面活性剂
高分散
氧化锆纳米晶体
合成
表征
cationic surfactant
high dispersion
zirconia nanocrystallite
synthesis
characterization
