SBA-15薄膜的制备及其表征

Synthesis and characteristics of SBA-15 film

在弱酸—草酸体系下,使用三嵌段共聚物P123作模板剂,正硅酸四乙酯做硅源,在空气—水界面上,合成出了介孔SBA-15薄膜。综合运用XRD、N_2吸附—脱附、SEM方法对样品进行了表征。结果表明,介孔薄膜SBA-15的BET比表面积可达597.21 m^2/g,平均孔径3.66 nm。

SBA-15film was synthesized at air-water interface in the system of oxalic acid(weak acid)by using triblock copolymer P123as the template agent and TEOS as the silicon source.The sample was characterized by XRD,N2adsorption-desorption and SEM means.The result showed that the BET specific surface area of mesoporous film SBA-15can reach597.21m2/g,average pore size is3.66nm.