Preparation of high-purity monodisperse silica microspheres by the sol-gel method coupled with polymerization-induced colloid aggregation  

作　　者：Beibei Zhao Yan Zhang Tao Tang Fengyun Wang Tong Li Qiyu Lu 

机构地区：[1]College of Food Science and Technology,Henan University of Technology [2]Chemical Engineering Institute,Nanjing University of Science and Technology [3]Dalian Elite Analytical Instruments Co.,Ltd.

出　　处：《Particuology》2015年第5期177-184,共8页颗粒学报（英文版）

基　　金：Financial support was granted by China National Natural Science Foundation(No.51242001);the Doctor Scientific Research Foundation of Henan University of Technology (2013BS029)

摘　　要：Ultra-pure mesoporous silica microspheres with good monodispersity were synthesized in two steps： nanometer-sized silica sol was produced by the sol-gel process, then micrometer-sized silica microspheres were synthesized by polymerization-induced colloid aggregation of the silica sol. The total metal content of the microspheres was extremely low, which eliminated the tailing of chromatographic peaks by chelating reagents. The pore structure of the silica microspheres could be controlled by altering the sol-gel conditions. The silica microsphere particle size could be adjusted by using different polymerizationinduced colloid aggregation conditions.Ultra-pure mesoporous silica microspheres with good monodispersity were synthesized in two steps： nanometer-sized silica sol was produced by the sol-gel process, then micrometer-sized silica microspheres were synthesized by polymerization-induced colloid aggregation of the silica sol. The total metal content of the microspheres was extremely low, which eliminated the tailing of chromatographic peaks by chelating reagents. The pore structure of the silica microspheres could be controlled by altering the sol-gel conditions. The silica microsphere particle size could be adjusted by using different polymerizationinduced colloid aggregation conditions.

关 键 词：Sol-gel Polymerization-induced colloid aggregation Silica High purity MONODISPERSE 

分 类 号：O613.72[理学—无机化学]