Formation of highly ordered mesoporous silica materials adopting lyotropic liquid crystal mesophases

S. A. El-Safty*, J. Evans

*この研究の対応する著者

研究成果: Article査読

56 被引用数 (Scopus)

抄録

Mesoporous silica materials have been synthesised in strongly acidic media at pH = 1.3 using high concentrations of a non-ionic surfactant (Brij 76) as a structure-directing agent. Well-defined ordered mesoporous silicas with hexagonal (HI), lamellar (L) and solid phase (S) structure have been prepared at room temperature according to the lyotropic liquid crystalline mesophases of Brij 76. At high temperature (60°C), highly ordered cubic (Ia3d), cubic (Im3m) and 3-d hexagonal (p63/mmc) nanostructured materials have been produced. The synthesised materials were studied by powder X-ray diffraction (XRD), the Brunauer-Emmett-Teller (BET) method for nitrogen adsorption/desorption isotherms and surface area measurements. Transmission electron microscopy (TEM), XRD and TEM patterns for all materials show well-defined long-range porous architectures. It was found that BET surface area values of the nanostructured materials are reduced upon increasing the temperature of synthesis.

本文言語English
ページ(範囲)117-123
ページ数7
ジャーナルJournal of Materials Chemistry
12
1
DOI
出版ステータスPublished - 2002
外部発表はい

ASJC Scopus subject areas

  • 物理化学および理論化学
  • 材料化学
  • 材料科学(全般)

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