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Acta Chimica Sinica ›› 2009, Vol. 67 ›› Issue (10): 1093-1097. Previous Articles     Next Articles

Original Articles

三头季铵盐阳离子表面活性剂合成菱形十二面体介孔二氧化硅单晶

沈绍典*,a 蔡华强b 朱晓东c 凌龙云a 罗秋玲d
万全云a 毛东森a 卢冠忠*,a,d

  

  1. (a上海应用技术学院化工系工业催化研究所 上海 200235)
    (b复旦大学化学系 上海 200433)
    (c思百吉中国有限公司帕纳科业务部 上海 200233)
    (d结构可控先进功能材料及其制备教育部重点实验室 华东理工大学催化研究所 上海 200237)

  • 投稿日期:2008-09-18 修回日期:2008-12-20 发布日期:2009-05-28
  • 通讯作者: 沈绍典

Synthesis of Mesoporous Silica Single Crystal of Rhombic Dodecahedron Using Tri-head Group Quarternary Ammonium Cationic Surfactant

Shen, Shaodian *,a Cai, Huaqiang b Zhu, Xiaodong c Ling, Longyun a
Luo, Qiuling d Wan, Quanyun a Mao, Dongsen a Lu, Guanzhong *,a,d
  

  1. (a Research Institute of Applied Catalysis, Department of Chemical Engineering, Shanghai Institute of Technology,
    Shanghai 200235)
    (b Department of Chemistry, Fudan University, Shanghai 200433)
    (c Spectris Instrumentation & Systems Shanghai Ltd., Shanghai 200233)
    (d Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science
    and Technology, Shanghai 200237)
  • Received:2008-09-18 Revised:2008-12-20 Published:2009-05-28
  • Contact: Shen, Shaodian

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Mesoporous single crystals have a great potential application to a micro-laser device due to their regular external morphology and ordered internal pore channel connectivity. The mesoporous silica single crystal with a cubic Pm3n structure has been synthesized successfully using a highly charged density tri-head group quaternary ammonium surfactant (C18-2-3-1) as a template and tetraethyl orthosilicate (TEOS) as an inorganic precursor in an acid medium through organic-inorganic cooperative assembly interaction. Scanning electron microscopy (SEM) observed that the mesoporous silica single crystal had a regular rhombic dodecahedron morphology with a uniform particle size of 5 μm. X-ray diffraction (XRD) and transmission electron microscopy confirmed that the calcined mesoporous single crystal had a cubic structure with Pm3n symmetry, and N2-sorption approach measured that the single crystal had a large BET surface area of 550 cm2/g, large BJH pore volume of 0.20 cm3/g and BJH pore size of 2.4 nm.

Key words: single crystal, mesoporous silica, rhombic dodecahedron, cubic, morphology control