Diatom-mimetic channeled mesoporous silica membranes: self-organized formation of a hierarchical porous framework. (19th November 2020)

• Record Type: Journal Article
• Authors: Kitamura, Riku; Watanabe, Hiroto; Somekawa, Shouichi; Ono, Yuto; Owari, Yuka; Oaki, Yuya; Imai, Hiroaki
• Is Part Of: Materials chemistry frontiers. Volume 5:Number 2(2021)
• Page Start: 862
• Page End: 868
• Publication Date: 2020-11-19
• Subjects: Materials science -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1039/d0qm00640h
• Languages: English
• ISSNs: 2052-1529

Abstract

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. 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.