Fabrication of hierarchically ordered porous films composed of imogolite via colloidal templating

Yoshiyuki Kuroda, Mamoru Tamakoshi, Junnosuke Murakami, Kazuyuki Kuroda

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Hierarchically ordered porous materials composed of imogolite with macro-, meso- and microporous systems were fabricated via colloidal templating. The monodispersed polystyrene particles used as templates were assembled into a close-packed structure on Si substrates. An imogolite sol was infiltrated into voids of polystyrene particles to form composite films. The ordered macropores as well as micro- and mesopores originating from imogolite were confirmed after the removal of templates by either extraction with toluene or calcination. The films were stable in organic solvents, such as acetone, ethanol, and hexane. Although the extracted film was unstable in water, the stability was improved by calcination. Imogolite is found to be a quite useful building block to fabricate hierarchically ordered porous materials with a wide range of porosities without using surfactants as templates.

Original languageEnglish
Pages (from-to)233-236
Number of pages4
JournalJournal of the Ceramic Society of Japan
Volume115
Issue number1339
DOIs
Publication statusPublished - 2007 Mar

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Keywords

  • Colloidal templating
  • Hierarchically ordered porous materials
  • Imogolite
  • Nanotube

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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