Controlled positioning of MOFs in interfacially polymerized thin-film nanocomposites

C. Van Goethem, R. Verbeke, S. Hermans, R. Bernstein, I. F.J. Vankelecom

Research output: Contribution to journalArticlepeer-review

110 Scopus citations


An advanced synthesis protocol for the preparation of Thin-Film Nanocomposite (TFN) membranes is presented. The Evaporation-controlled Filler Positioning (EFP) method carefully pre-positions the filler (ZIF-8 nanoparticles) exactly at the water/solvent interface before the initiation of the interfacial polymerization. A permeance increase of 220% compared to the counterpart without filler is observed, corresponding to the highest ever reported permeance increase upon filler incorporation for MOF-based TFN membranes without rejection loss. Moreover, optimal membrane performance is already obtained at a MOF concentration as low as 0.005 w/v%, which represents an 80 times reduction in the required amount of filler compared to other reported ZIF-8 based TFN membranes. This explicitly proves the importance of pre-positioning the filler right where it is needed, i.e. at the organic/water interface, before the interfacial polymerization. ZIF-8 based TFN membranes are prepared via both the EFP and the conventional synthesis method and a comparison between both protocols was made. Additionally, the influence of the size of the filler is investigated. All prepared membranes are further characterized using SEM, TEM, ATR-FTIR and XPS. The EFP-method is found to lead to better and more reproducible filtration performances.

Original languageEnglish
Pages (from-to)16368-16376
Number of pages9
JournalJournal of Materials Chemistry A
Issue number42
StatePublished - 1 Jan 2016

ASJC Scopus subject areas

  • Chemistry (all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science (all)


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