摘要
采用含铜硅酸乙酯(CuTEOS)进行溶胶-凝胶反应来制备高Cu含量的Cu/SiO2纳米复合气凝胶,复合气凝胶中的Cu含量可在小于66%(质量分数)的范围内调节.研究了水量、催化剂浓度、溶剂量及含铜硅酸乙酯的组成对溶胶-凝胶过程的影响.本研究中Cu/SiO2纳米复合气凝胶中粒子粒径大部分小于25nm,其孔径小于50nm,比表面积在400～650m2/g范围内.
Cu-rich Cu/SiO2 nanocomposite aerogels , in which mass fraction of Cu could reach as high as 6 6% , were firstly prepared by sol - gel process of Cu - containing tetraethyl orthosilicate （ Cu -TEOS） . The influence of H2O, catalyst, solvent and composition of Cu-containing tetraethyl orthosilicate on the sol-gel process was discussed. The particle diameter, pore diameter and specific surface areas of Cu/SiO2 composite aerogels were smaller than 25nm, 50nm and in the range of 400 650m^2/g respectively.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2005年第8期43-46,共4页
Journal of Materials Engineering
