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Keywords:

  • graphene;
  • nanosheets;
  • silica;
  • polyethyleneimine;
  • CO2 capture
Thumbnail image of graphical abstract

It is demonstrated that graphene-based porous silica sheets can serve as an efficient carrier support for PEI via a simple nanocasting technology. The resulting materials possess thin nature, high PEI loading content and high thermal-conductivity. Such features are favorable for the efficient diffusion and adsorption of CO2 as well as the rapid thermal transfer during the CO2 capture process.