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Macroporous foam of reduced graphene oxides prepared by lyophilization

Materials Research Bulletin, ISSN: 0025-5408, Vol: 47, Issue: 12, Page: 4335-4339
2012
  • 19
    Citations
  • 0
    Usage
  • 35
    Captures
  • 0
    Mentions
  • 0
    Social Media
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Metrics Details

  • Citations
    19
    • Citation Indexes
      18
    • Patent Family Citations
      1
      • Patent Families
        1
  • Captures
    35

Article Description

In this study, we demonstrate that water-soluble grafted polymer polyfluorene-grafted-poly(sulfobetainemetahcrylate) (PF-g-PSBMA) allows chemically reduced GO sheets dispersed in aqueous solution due to its ability to stably disperse hydrophobic rGO sheets. Based on the stable rGO/PF-g-PSBMA dispersion, macroporous graphene foam can be simply obtained by lyophilization process (freeze-drying). The resulting composite foam exhibits three-dimensional macroporous structure with high specific surface area and can easily re-dissolve into water. Also, the stable rGO/PF-g-PSBMA dispersion allows solution-based fabrication of thin-film graphene devices. Moreover, PF-g-PSBMA can be removed from rGO foam or film by thermal annealing, and the conductivity of rGO film can be greatly enhanced likely due to its annealing ability.

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