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Synthesis, Transfer, and Gas Separation Characteristics of MOF-Templated Polymer Membranes

Schmitt, Sophia; Shishatskiy, Sergey; Krolla, Peter; An, Qi; Begum, Salma; Welle, Alexander; Hashem, Tawheed; Grosjean, Sylvain; Abetz, Volker; Bräse, Stefan; Wöll, Christof; Tsotsalas, Manuel

Abstract:
This paper discusses the potential of polymer networks, templated by crystalline metal–organic framework (MOF), as novel selective layer material in thin film composite membranes. The ability to create mechanically stable membranes with an ultra-thin selective layer of advanced polymer materials is highly desirable in membrane technology. Here, we describe a novel polymeric membrane, which is synthesized via the conversion of a surface anchored metal–organic framework (SURMOF) into a surface anchored gel (SURGEL). The SURGEL membranes combine the high variability in the building blocks and the possibility to control the network topology and membrane thickness of the SURMOF synthesis with high mechanical and chemical stability of polymers. Next to the material design, the transfer of membranes to suitable supports is also usually a challenging task, due to the fragile nature of the ultra-thin films. To overcome this issue, we utilized a porous support on top of the membrane, which is mechanically stable enough to allow for the easy membrane transfer from the synthesis substrate to the final membrane support. To demonstrate the potential for gas separation of the synthesized SURGEL membranes, as well as the suitability of the transfer method, we determined the permeance for eight gases with different kinetic diameters.

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Verlagsausgabe §
DOI: 10.5445/IR/1000098685
Veröffentlicht am 04.10.2019
Originalveröffentlichung
DOI: 10.3390/membranes9100124
Coverbild
Zugehörige Institution(en) am KIT Institut für Organische Chemie (IOC)
Institut für Funktionelle Grenzflächen (IFG)
Institut für Toxikologie und Genetik (ITG)
Institut für Biologische Grenzflächen (IBG)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Zeitschriftenaufsatz
Jahr 2019
Sprache Englisch
Identifikator ISSN: 2077-0375
KITopen-ID: 1000098685
Erschienen in Membranes
Band 9
Heft 10
Seiten Art. Nr.: 124
Vorab online veröffentlicht am 20.09.2019
Schlagworte thin films, gas separation, selective layer transfer, metal–organic framework (MOF)
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