双模板法制备介孔二氧化硅纳米蚕茧  

Preparation of mesoporous silica nano-cocoons by a dual-template approach

作　　者：国永敏[1] 肖泽丽[1] 李艺[1] 李宝宗[1] 

机构地区：[1]苏州大学材料与化学化工学部,江苏苏州215123

出　　处：《化学研究》2013年第1期12-14,共3页Chemical Research

基　　金：国家自然科学基金资助项目(21071103)

摘　　要：用十八烷基三甲基溴化铵(STAB)作模板剂,左旋香茅醇(CN)为结构助剂,利用溶胶-凝胶法,在CN/STAB摩尔比1∶1条件下制备了介孔二氧化硅纳米蚕茧;采用扫描电镜和透射电镜分析了产物的结构,并对其进行了氮气吸附-脱附测试.结果表明,所制备的介孔二氧化硅纳米蚕茧的孔道与蚕茧表面平行;搅拌速度对介孔二氧化硅纳米蚕茧的长度有较大的影响,随着搅拌速度的增加,其长度减小.Mesoporous silica nano-cocoons were prepared by sol-gel method with stearyl trime- thyl ammonium bromide （STAB） as the template and β-citronellol （CN） as the co-structure-di- recting agent while the molar ratio of CN/STAB was kept as 1 ： 1. The structure of as-synthe- sized product was analyzed by scanning electron microscopy and transmission electron micros- copy; and N2 adsorption-desorption test of the as-synthesized product was also conducted. It has been found that as-synthesized mesoporous silica nano-cocoons contain circular pore chan- nels parallel to the shell surfaces. Besides, stirring rate has a significant effect on the length of as-synthesized mesoporous silica nano-coeoons, and the length of the product tends to decline with increasing stirring rate.

关 键 词：介孔二氧化硅 纳米蚕茧 双模板法 制备 

分 类 号：O613.71[理学—无机化学]