高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (6): 852.

• 研究简报 • 上一篇    下一篇

阳离子与非离子混合表面活性剂模板合成介孔SiO2

卜林涛, 邵青, 戴乐蓉   

  1. 北京大学物理化学研究所, 北京 100871
  • 收稿日期:1999-07-21 出版日期:2000-06-24 发布日期:2000-06-24
  • 通讯作者: 戴乐蓉(1938年出生),女,教授,主要从事胶体与界面化学研究.
  • 基金资助:

    国家攀登计划(批准号:97021107);国家自然科学基金重大项目(批准号:29992590-4)

Synthesis of Meso-porous Silica Using Mixed Cationic-nonionic Surfactants as Templates

BU Lin-Tao, SHAO Qing, DAI Le-Rong   

  1. Institute of Physical Chemistry, Peking University, Beijing 100871, China
  • Received:1999-07-21 Online:2000-06-24 Published:2000-06-24

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关键词: 混合表面活性剂, 液晶模板, 介孔二氧化硅

Abstract: Using the mixture of cationic surfactant cetyltrimethylammonium bromide(CTAB) and six nonionic surfactants as templates, meso porous silica was synthesized. The d space of silica templated by CTABis 3.5 nm. The d spaces could be controlled by changing the ratio of nonionic to cationic surfactants and by increasing the length of nonpolar chain of nonionic surfactants in the mixed cationic-nonionic surfactant templating systems. The pore dimension of silica in the mixed surfactants templating system is larger than that in CTABsystem and a well ordered structure of pore array was maintained.

Key words: Mixed surfactants, Liquid crystal template, Meso porous silica

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