Diatom-Mimicking Ultrahigh-Flux Mesoporous Silica Thin Membrane with Straight-Through Channels for Selective Protein and Nanoparticle Separations

Jingling Yang, Geng Sheng Lin, Chung Yuan Mou, Kuo Lun Tung

研究成果: 雜誌貢獻文章同行評審

20 引文 斯高帕斯(Scopus)

摘要

A nature-inspired mesoporous ultrafiltration membrane with unprecedented permeability and high selectivity for selective protein and nanoparticle separations is reported herein. We describe a diatom-mimicking hierarchically porous membrane that consists of a single-layer mesoporous silica thin film (MSTF) with perpendicular pores supported on top of a macroporous anodic aluminum oxide (AAO) membrane (MSTF¥AAO) for ultrafiltration. The MSTF, with a thickness of ca. 30 nm, uniform vertical straight-through mesoporous channels (pore diameter of 5.9 ± 0.4 nm), superhydrophilicity, and continuous nonbreaking to centimeter range (area of 17.3 cm 2 ), is overlaid on the AAO straight-through membrane, which counterintuitively exhibits both ultrahigh water permeability (1027 ± 20 L m -2 h -1 bar -1 ) and an excellent rejection rate (>99%) for molecules larger than 7 nm. The water permeability result is significantly higher than that of the reported nanosized channeled membranes. A model equation for calculating the theoretical permeability flux of the vertically nanochanneled membrane is established and compared with experimental results.

原文英語
頁(從 - 到)1745-1751
頁數7
期刊Chemistry of Materials
31
發行號5
DOIs
出版狀態已發佈 - 3月 12 2019
對外發佈

ASJC Scopus subject areas

  • 化學 (全部)
  • 化學工程 (全部)
  • 材料化學

指紋

深入研究「Diatom-Mimicking Ultrahigh-Flux Mesoporous Silica Thin Membrane with Straight-Through Channels for Selective Protein and Nanoparticle Separations」主題。共同形成了獨特的指紋。

引用此