In situ synthesis of magnetic mesoporous silica via sol-gel process coupled with precipitation and oxidation  

作　　者：Junqi Zhao Yujun Wang Guangsheng Luo Shenlin Zhu 

机构地区：[1]The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

出　　处：《Particuology》2011年第1期56-62,共7页颗粒学报（英文版）

基　　金：support of the National Natural Science Foundation of China (Grant Nos.20476050, 20490200 and 20525622);National Basic Research Program (2007CB714302)

摘　　要：A novel method was proposed for the in situ synthesis of magnetite-containing mesoporous silica SBA- 16 via a sol-gel process coupled with precipitation and oxidation. The effect of the added amounts of reactants on the mesostructural and magnetic properties of the magnetic mesoporous silica was inves- tigated, It was determined that the synthesized magnetic mesoporous silica with a total pore volume of 0.64-0.96 cm3/g and an average pore diameter of 4.0-14,9 nm had a relatively high saturation mag- netization value （1.11-5.77 emu/g） and a large surface area （258-747 m2/g）, Lysozyme was chosen as a model protein to test the performance of the magnetic mesoporous silica as a protein adsorbent, The high adsorption capacity （up to 212 mg/g） suggested a promising future as bimolecular hosts for the magnetic mesoporous silica.A novel method was proposed for the in situ synthesis of magnetite-containing mesoporous silica SBA- 16 via a sol-gel process coupled with precipitation and oxidation. The effect of the added amounts of reactants on the mesostructural and magnetic properties of the magnetic mesoporous silica was inves- tigated, It was determined that the synthesized magnetic mesoporous silica with a total pore volume of 0.64-0.96 cm3/g and an average pore diameter of 4.0-14,9 nm had a relatively high saturation mag- netization value （1.11-5.77 emu/g） and a large surface area （258-747 m2/g）, Lysozyme was chosen as a model protein to test the performance of the magnetic mesoporous silica as a protein adsorbent, The high adsorption capacity （up to 212 mg/g） suggested a promising future as bimolecular hosts for the magnetic mesoporous silica.

关 键 词：Magnetic mesoporous silica Mesostructural property Magnetic property Protein absorbent 

分 类 号：TQ424.25[化学工程] TQ174.758