Electrospun metal-organic frameworks with polyacrylonitrile as precursors to hierarchical porous carbon and composite nanofibers for adsorption and catalysis

Chemosphere. 2020 Jan:239:124833. doi: 10.1016/j.chemosphere.2019.124833. Epub 2019 Sep 10.

Abstract

A facile and effective method has been developed to prepare hierarchical porous carbon nanofibers (PCNFs), carbon nanofibers supported nickel nanoparticles (PCNFs-Ni) and carbon nanofibers encapsulating gold nanoparticles (PCNFs-Au). PCNFs or PCNFs-Au were obtained by embedding metal-organic frameworks (e.g. ZIF-8 or ZIF-8-Au) into polyacrylonitrile via electrospinning and subsequent carbonization. In addition, PCNFs-Ni were obtained by impregnating PAN/ZIF-8 nanofibers in Ni(NO3)2·6H2O followed by carbonization. Both PCNF and PCNF-Ni exhibited excellent adsorption activities for methylene blue (MB) and congo red (CR). Especially, PCNF-Ni could be removed and separated via a magnet. PCNFs-Au showed excellent catalytic properties in the reduction reaction of 4-nitrophenol (4-NP).

Keywords: Adsorption; Carbon nanofibers; Catalysis; Electrospinning; Hierarchical porous.

MeSH terms

  • Acrylic Resins / chemistry*
  • Adsorption
  • Carbon / chemistry*
  • Catalysis
  • Congo Red / chemistry
  • Congo Red / isolation & purification
  • Metal Nanoparticles / chemistry
  • Metal-Organic Frameworks / chemistry*
  • Methylene Blue / chemistry
  • Methylene Blue / isolation & purification
  • Nanofibers / chemistry*
  • Nitrophenols / chemistry
  • Nitrophenols / isolation & purification
  • Porosity
  • Water Pollutants, Chemical / chemistry*
  • Water Pollutants, Chemical / isolation & purification

Substances

  • Acrylic Resins
  • Metal-Organic Frameworks
  • Nitrophenols
  • Water Pollutants, Chemical
  • polyacrylonitrile
  • Congo Red
  • Carbon
  • Methylene Blue
  • 4-nitrophenol