New Generation of Mesoporous Silica Membranes Prepared by a Stöber-Solution Pore-Growth Approach

Research output: Contribution to journalArticleAcademicpeer-review

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.

Original languageEnglish
Pages (from-to)18528-18539
Number of pages12
JournalACS Applied Materials and Interfaces
Volume11
Issue number20
Early online date30 Apr 2019
DOIs
Publication statusPublished - 22 May 2019

Fingerprint

Silicon Dioxide
Silica
Membranes
Water
Cyclohexane
Self assembly
Evaporation
Fluxes
Microstructure

Keywords

  • Stöber sol
  • accessible pores
  • mesoporous silica membranes
  • molecular separation
  • porous ceramic support
  • ultrathin membrane
  • Stober sol

Cite this

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title = "New Generation of Mesoporous Silica Membranes Prepared by a St{\"o}ber-Solution Pore-Growth Approach",
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 St{\"o}ber-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.",
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New Generation of Mesoporous Silica Membranes Prepared by a Stöber-Solution Pore-Growth Approach. / Pizzoccaro, Marie-Alix; Huiskes, Cindy; Keim, Enrico G.; Sluitjer, Soraya Nicole; van Veen, Henk M.; Nijmeijer, Arian; Winnubst, Louis; Luiten-Olieman, M.W.J.

In: ACS Applied Materials and Interfaces, Vol. 11, No. 20, 22.05.2019, p. 18528-18539.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - van Veen, Henk M.

AU - Nijmeijer, Arian

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