摘要
采用正硅酸乙脂为前驱物，用溶胶－凝胶法制备纳米级二氧化硅（ＳｉＯ２）粉，分别用Ｘ射线衍射仪、透射电子显微镜、红外光谱仪、差热扫描量热分析仪和白度测试仪对凝胶粉随温度变化的特征进行了分析测试．结果表明干凝胶在１２００℃热处理１ｈ仍是无定型的ＳｉＯ２粉，其粒度大小为４０ｎｍ左右，白度为９２．１％．
Using tetraethylorsilicate as precursor, ethanol and deionized water as solvents, SiO 2 nanometer powders were prepared by sol gel method and characterized by X ray diffraction, transmission electron microscopy, FT IR spectrometer and differential scanning calormetry analyzer. The results show that the SiO 2 powders heated at 1 200 ℃ for 1 h are amorphous. The average size of the powders is about 40 nm, and the whiteness is 92 1%. On the other hand, with the increasing calcine temperature, the 962 cm -1 band of Si-OH bent vibration was disappeared, and the shift of the band of Si-O-Si anti symmetrical stretch vibration from 1 082 to 1 100 cm -1
出处
《中山大学学报（自然科学版）》
CAS
CSCD
北大核心
1998年第5期35-38,共4页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
广州市科委重点课题
