초록 |
Mesoporous hollow spheres have been attracting interests due to their wide potential applications in drug and gene delivery, encapsulation, and catalysts. In general, hollow silica spheres have been prepared by using polystyrene spheres as hard templates; therefore, the core materials should be removed by solvent extraction or calcinations in order to make it hollow. In this work, mesoporous hollow silica microspheres were prepared by using W/O ethanol droplets as the template in edible soybean oil. The sol-gel reaction of TEOS was achieved only at the interface of the emulsion droplets, resulting in hollow silica microspheres. After washing the resultant with acetone, hollow silica microspheres were simply obtained. |