Fig. 1: Exfoliation of graphene in different (co-)solvents without and with NH3.
Concentration of graphene as measured by UV–Vis after LPE incl. centrifugation for various organic-water mixtures at concentrations of organic solvent from 0 to 100% without NH3 addition (a) and with 50 mmol·L-1 NH3 addition during LPE (b).
