Cationic surfactant templates for newly developed cubic Fd3m silica mesocage structures

Sherif A. El-Safty, Yoshimichi Kiyozumi, Takaaki Hanaoka, Fujio Mizukami

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Three-dimensional (3D) silica monoliths (HOM-type) show promise to new frontiers in materials science. Here, we reveal a real evidence of the possibility of the instant direct-templating synthesis to control ordered cubic Fd3m geometry with supermicro- and nano-scale pores by using a number of cationic surfactants as templates. In the synthetic system, the addition of long-chain alkanes (≥ C10-alkane) crucially affected the mesophase structural changes from hexagonal (P6mm) MCM-41 to cubic (Fd3m) HOM-11 structures. Our simple method in the context of synthesis time (in minutes) and in composition domains shows key facts of control design of ordered cubic Fd3m mesophases with shape- and size-controlled cage pore geometries.

Original languageEnglish
Pages (from-to)2950-2953
Number of pages4
JournalMaterials Letters
Volume62
Issue number17-18
DOIs
Publication statusPublished - 2008 Jun 30
Externally publishedYes

Keywords

  • Cationic surfactants
  • Cubic Fd3m
  • Monoliths
  • Phase transition
  • Three-dimensional

ASJC Scopus subject areas

  • Materials Science(all)

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