Characterization of graphene layers obtained from rice husk

Graphene layer were obtained from a four-step approach starting from rice husk. The chemical-physical characterization of the samples indicates the presence of a mixture of graphene layers and amorphous carbon. A higher amount of activation agent (1:5) seems to increase the relative amount of graphene component while the number of layers resulted unaffected. A further treatment with H2O2 seems to unaffected the graphene content and their overall quality.