| 초록 |
Among the carbon-based nanomaterials, graphene is currently considered to be one of the spotlight materials. Cyclodextrin, composed of glucose with a hydrophobic interior cavity and a hydrophilic exterior, was utilized to sonochemically exfoliate graphene in aqueous medium from graphite as the precursor. Gold and silver nanoparticles synthesized using cyclodextrin under alkaline conditions were also studied with regard to their behavior for the exfoliation of graphene. When using the sonochemical exfoliation method a high concentration and stability for more than 4 months was attained. The products were characterized by UV-visible, Raman, and infrared spectroscopy as well as transmission electron and atomic force microscopy and thermogravimetric analysis. In addition, the cell toxicity of the exfoliated graphene dispersion was tested in vitro on embryonic fibroblast cells. |
