4.7 Article

A novel 3D covalent organic framework membrane grown on a porous alpha-Al2O3 substrate under solvothermal conditions

Journal

CHEMICAL COMMUNICATIONS
Volume 51, Issue 85, Pages 15562-15565

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cc06742a

Keywords

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Funding

  1. National Natural Science Foundation of China [21473196, 21273235]
  2. Hundred-Talent Program of Dalian Institute of Chemical Physics
  3. Liaoning Natural Science Foundation-Fostering Program for Excellent Talents [201502640]
  4. Knowledge Innovation Program of Chinese Academy of Sciences, P.R. China

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A novel approach to grow a 3D COF-320 membrane on a surface-modified porous alpha-Al2O3 substrate is developed. A compact and uniform COF-320 membrane with a layer thickness of similar to 4 mu m is obtained. This is the first reported 3D COF functional membrane fabricated successfully on a common porous alpha-Al2O3 ceramic support. The gas permeation results indicate that the gas transport behavior is mainly governed by the predicted Knudsen diffusion process due to the large nanopores of 3D COF-320.

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