Diatom-mimetic channeled mesoporous silica membranes: Self-organized formation of a hierarchical porous framework

Riku Kitamura, Hiroto Watanabe, Shouichi Somekawa, Yuto Ono, Yuka Owari, Yuya Oaki, Hiroaki Imai

Research output: Contribution to journalArticlepeer-review

Abstract

Silica membranes having macrochannels with mesoporous walls were spontaneously fabricated using a self-organized process with rapid gelation of concentrated silicate and surfactant precursor solutions. The specific hierarchical porous framework consisting of straight macrochannels ca. 1 μm in diameter is similar to that of a biological silica frustule of diatoms. We applied the diatom-mimetic channeled mesoporous silica membranes to high-permeability-rate filtration and enhanced photocatalytic systems. The presence of macrochannels was found to improve the performance of the mesoporous silica membranes in filtration and as a photocatalyst carrier.

Original languageEnglish
Pages (from-to)862-868
Number of pages7
JournalMaterials Chemistry Frontiers
Volume5
Issue number2
DOIs
Publication statusPublished - 2021 Jan 21

ASJC Scopus subject areas

  • Materials Science(all)
  • Materials Chemistry

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