1. Mesoporous Silica Thin Membrane with Tunable Pore Size for Ultrahigh Permeation and Precise Molecular Separation
- Author
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Geng-Sheng Lin, Jingling Yang, Chung-Yuan Mou, and Kuo-Lun Tung
- Subjects
Materials science ,genetic structures ,Portable water purification ,02 engineering and technology ,Permeation ,Mesoporous silica ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,eye diseases ,0104 chemical sciences ,law.invention ,Membrane ,Magazine ,Chemical engineering ,law ,General Materials Science ,sense organs ,Nanofiltration ,Thin film ,0210 nano-technology ,Science, technology and society - Abstract
We report on our use of a thin-layered vertical mesoporous silica thin film (MSTF) with tunable pore size overlaid on an anodic aluminum oxide (AAO) membrane for advancing water purification. The features of ultrathin thickness (about 20 nm), a uniform vertical pore orientation, low tortuosity, high porosity, and a hydrophilic surface endow the MSTF membranes with ultrahigh water permeability compared with that of state-of-the-art membranes. The modified E-MSTF membrane with a small pore diameter of 2.1 ± 0.1 nm demonstrates superior nanofiltration performance for dye molecules with a cutoff of 520 Da and ultrahigh water permeability of 310 ± 8 L m
- Published
- 2020