Title
New Generation of Mesoporous Silica Membranes Prepared by a Stöber-Solution Pore-Growth Approach
Author
Pizzoccaro-Zilamy, M.A.
Huiskes, C.
Keim, E.G.
Sluijter, S.N.
van Veen, H.
Nijmeijer, A.
Winnubst, L.
Luiten-Olieman, M.W.J.
Publication year
2019
Abstract
Membranes consisting of uniform and vertically organized mesopores are promising systems for molecular filtration because of the possibility to combine high-flux and high-rejection properties. In this work, a new generation of mesoporous silica membranes (MSMs) have been developed, in which an organized mesoporous layer is directly formed on top of a porous ceramic support via a Stöber-solution pore-growth approach. Relevant characterization methods have been used to demonstrate the growth of the membrane separation layer and the effect of reaction time and the concentration of the reactants on the microstructure of the membrane. Compared to previous studies using the evaporation-induced self-assembly method to prepare MSMs, an important increase in water permeability was observed (from 1.0 to at least 3.8 L m-2 h-1 bar-1), indicating an improved pore alignment. The water permeability, cyclohexane permporometry tests, and molecular cut-off measurements (MWCO ? 2300 Da) were consistent with membranes composed of 2-3 nm accessible pores. © 2019 American Chemical Society.
Subject
Energy Efficiency
Energy / Geological Survey Netherlands
Accessible pores
Mesoporous silica membranes
Molecular separation
Porous ceramic support
Stöber sol
Ultrathin membrane
To reference this document use:
http://resolver.tudelft.nl/uuid:173079f4-526a-483e-8826-93e6bdfd374e
DOI
https://doi.org/10.1021/acsami.9b03526/
TNO identifier
867369
Publisher
American Chemical Society
ISSN
1944-8244
Source
ACS Applied Materials and Interfaces, 11 (20), 18528-18539
Document type
article