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Enhanced Chemical Separation by Freestanding CNT-Polyamide/Imide Nanofilm Synthesized at the Vapor-Liquid Interface.
Journal article

Enhanced Chemical Separation by Freestanding CNT-Polyamide/Imide Nanofilm Synthesized at the Vapor-Liquid Interface.

  • Droudian A Nanoscience for Energy Technology and Sustainability, Department of Mechanical and Process Engineering , Eidgenössische Technische Hochschule (ETH) Zurich , Tannenstrasse 3 , Zurich CH-8092 , Switzerland.
  • Youn SK Nanoscience for Energy Technology and Sustainability, Department of Mechanical and Process Engineering , Eidgenössische Technische Hochschule (ETH) Zurich , Tannenstrasse 3 , Zurich CH-8092 , Switzerland.
  • Wehner LA Nanoscience for Energy Technology and Sustainability, Department of Mechanical and Process Engineering , Eidgenössische Technische Hochschule (ETH) Zurich , Tannenstrasse 3 , Zurich CH-8092 , Switzerland.
  • Wyss RM Nanoscience for Energy Technology and Sustainability, Department of Mechanical and Process Engineering , Eidgenössische Technische Hochschule (ETH) Zurich , Tannenstrasse 3 , Zurich CH-8092 , Switzerland.
  • Li M Nanoscience for Energy Technology and Sustainability, Department of Mechanical and Process Engineering , Eidgenössische Technische Hochschule (ETH) Zurich , Tannenstrasse 3 , Zurich CH-8092 , Switzerland.
  • Park HG Nanoscience for Energy Technology and Sustainability, Department of Mechanical and Process Engineering , Eidgenössische Technische Hochschule (ETH) Zurich , Tannenstrasse 3 , Zurich CH-8092 , Switzerland.
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  • 2018-05-30
Published in:
  • ACS applied materials & interfaces. - 2018
carbon nanotube scaffold
composite membrane
desalination
gas separation
interfacial polymerization
plasticization resistance
thin selective layer
English In chemical separation, thin membranes exhibit high selectivity, but often require a support at the expense of permeance. Here, we report a pinhole-free polymeric layer synthesized within freestanding carbon nanotube buckypaper through vapor-liquid interfacial polymerization (VLIP). The VLIP process results in thin, smooth and uniform polyamide and imide films. The scaffold reinforces the nanofilm, defines the membrane thickness, and introduces an additional transport mechanism. Our membranes exhibit superior gas selectivity and osmotic semipermeability. Plasticization resistance and high permeance in hydrocarbon separation together with a considerable improvement in water-salt permselectivity highlight their potential as new membrane architecture for chemical separation.
Language
  • English
Open access status
closed
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Persistent URL
https://sonar.ch/global/documents/272494
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