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Mesoporous Silica Materials Synthesized via Sol-Gel Methods Modified with Ionic Liquid and Surfactant Molecules
Cun-ying Xu*,Ru-lan Tang,Yi-xin Hua,Peng-xiang Zhang
Author NameAffiliationE-mail
Cun-ying Xu* Kunming University of Science and Technology, Kunming 650093, China xucunying@gmail.com 
Ru-lan Tang Kunming University of Science and Technology, Kunming 650093, China  
Yi-xin Hua Kunming University of Science and Technology, Kunming 650093, China  
Peng-xiang Zhang Kunming University of Science and Technology, Kunming 650093, China  
Abstract:
Mesoporous silica materials were synthesized via a sol-gel method employing a room temperature ionic liquid (1-butyl-3-methylimidazolium tetrafluoroborate, [bmim][BF4]) as a new solvent medium and further modified with surfactant (hexadecyl-trimethyl-ammonium bromide, CTAB) as a pore templating material. The synthesized samples were characterized by the transmission electron microscopy, X-ray diffraction, and N2 adsorption-desorption techniques. The results indicated that the mesoporous silica synthesized by using [bmim][BF4] and CTAB as mixed templates showed better mesostructural order and smaller pore size, compared with mesoporous silica materials synthesized by using single [bmim][BF4] as template under the same conditions. This indicates that the presence of surfactant can affect the microstructures of silica prepared by the present synthesis method.
Key words:  Mesoporous silica, Ionic liquid, Surfactant
FundProject:
Mesoporous Silica Materials Synthesized via Sol-Gel Methods Modified with Ionic Liquid and Surfactant Molecules
徐存英*,汤汝兰,华一心,张鹏翔
摘要:
采用离子液体1-甲基-3-丁基咪唑四氟硼酸盐改性的溶胶-凝胶法以及表面活性剂十六烷基三甲基溴化铵进一步改性的溶胶-凝胶法制备介孔二氧化硅. 通过X射线衍射、氮气吸附脱附和扫描电子显微镜对所制备的样品进行表征. 结果表明,与仅用离子液体为模板制备的介孔二氧化硅相比,采用表面活性剂和离子液体的混合物为模板制备的介孔二氧化硅具有较小的孔径和较规则的孔结构. 说明利用该方法制备介孔二氧化硅,表面活性剂的加入会在一定程度上影响所制介孔二氧化硅的微结构.
关键词:  介孔二氧化硅,离子液体,表面活性剂
DOI:10.1088/1674-0068/21/06/596-600
分类号: