High-concentration, surfactant-stabilized graphene dispersions.

  title={High-concentration, surfactant-stabilized graphene dispersions.},
  author={Mustafa Lotya and P. J. King and U. Khan and Sukanta De and J. Coleman},
  journal={ACS nano},
  volume={4 6},
  • Mustafa Lotya, P. J. King, +2 authors J. Coleman
  • Published 2010
  • Materials Science, Medicine
  • ACS nano
  • A method is presented to produce graphene dispersions, stabilized in water by the surfactant sodium cholate, at concentrations up to 0.3 mg/mL. The process uses low power sonication for long times (up to 400 h) followed by centrifugation to yield stable dispersions. The dispersed concentration increases with sonication time while the best quality dispersions are obtained for centrifugation rates between 500 and 2000 rpm. Detailed TEM analysis shows the flakes to consist of 1-10 stacked… CONTINUE READING
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