Preparation of graphene nanosheets through repeated supercritical carbon dioxide process

Abstract

In this study, we reported that the supercritical carbon dioxide (scCO(2)) process is potentially useful for exfoliation of graphite to provide less-damaged graphene nanosheets (GNs). Also, the repeated scCO(2) process was found to further reduce the thickness of the exfoliated GNs, which shows the possibility of producing thickness-controlled GNs by varying numbers of scCO(2) process. (C) 2012 Elsevier B.V. All rights reserved.