A Phase Conversion Method to Anchor ZIF-8 onto PAN Nanofiber Surfaces for CO2 Capture

Published in RSC Advances, vol. 11 (2021) · Royal Society of Chemistry · Open access, CC BY
DOI: 10.1039/D1RA06480K

Summary

Metal-organic frameworks are excellent at capturing CO2 but come as powders, awkward to deploy in a real gas stream. This study anchors ZIF-8 onto the surface of electrospun polyacrylonitrile nanofibres: the fibres are pre-treated with sodium hydroxide, coated with zinc hydroxide, and that coating is converted into ZIF-8 by adding 2-methylimidazole. The result is a flexible, self-supporting mat carrying an active MOF layer - the framework's capture capacity in a form that can be handled and installed.

Authors & Affiliations

  • Zhenyu Li
    Department of Energy Conversion and Storage, Technical University of Denmark
  • Zhen Cao
    Department of Engineering Sciences and Mathematics, Luleå University of Technology, Sweden
  • Carlos Grande
    Process Technology, SINTEF, Norway
  • Wenjing Zhang
    Department of Environmental Engineering, Technical University of Denmark
  • Yibo Dou
    Department of Environmental Engineering, Technical University of Denmark
  • Xiaosen Li
    Guangzhou Center for Gas Hydrate Research, Chinese Academy of Sciences, China

Linari Electrospinning Systems

Linari Engineering electrospinning system
The PAN nanofibres were produced on a Linari Engineering S.r.l. system at 30 kV with a needle-to-substrate distance of 140 mm - a longer working distance than usual, giving the jet more time to stretch and the solvent more time to evaporate. See our range of systems.

Topics

CO2 Capture Metal-Organic Frameworks Flexible Sorbents Surface Functionalization

Materials

Polyacrylonitrile ZIF-8
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