Synthesis of Large Spherical Mesoporous Silica Using Tween-80 and Starch Hydrolysis Solution

Large uniform mesoporous silica microspheres were synthesized using Tween-80 in presence of starch hydrolysis solution. The pore structure and morphology were characterized and observed using nitrogen adsorption-desorption isotherm and SEM. The results showed that the hydrolysis compounds of starch could interact with Teween-80 to form co-template and change the polar of solution, the spherical mesoporous silica with larger pore volume and concentrated pore size was obtained after TEOS hydrolysis and calcined. The spheres diameter increased with the TEOS hydrolysis time and starch hydrolysis solution used, while the mesopore diameter was less changed. The property of mesoporous silica as captopril adsorption and releasing support was investigated.