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

doi:10.1039/d0qm00640h

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

応用化学科

研究成果: Article › 査読

抄録

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.

本文言語	English
ページ（範囲）	862-868
ページ数	7
ジャーナル	Materials Chemistry Frontiers
巻	5
号	2
DOI	https://doi.org/10.1039/d0qm00640h
出版ステータス	Published - 2021 1月 21

ASJC Scopus subject areas

材料科学（全般）
材料化学

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10.1039/d0qm00640h

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T2 - Self-organized formation of a hierarchical porous framework

AU - Kitamura, Riku

AU - Watanabe, Hiroto

AU - Somekawa, Shouichi

AU - Ono, Yuto

AU - Owari, Yuka

AU - Oaki, Yuya

AU - Imai, Hiroaki

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N2 - 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.

AB - 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.

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

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