FEW-LAYERED GRAPHENE PREPARED VIA EXFOLIATION OF GRAPHITE INTERCALATION COMPOUNDS WITHOUT SONICATION AND ITS CHARACTERISTICS

摘要

In recent years, numerous methods for preparing isolated graphene without defects were developed. One such method is the exfoliation of graphite oxide (GO) via sonication [1]. However, this process results in the oxidation of graphite layers; moreover, the chemical restoration of graphene's original characteristics is difficult. The exfoliation of graphite intercalation compounds (GICs) via desalination with alkyl halide solvents is considered to be a possible solution to this problem. In this study, Na-tetrahydrofuran-GICs (Na-THF-GICs) were exfoliated though this desalination-without-sonication process. The properties of obtained few-layered graphene present no defect, as compared to few-layered graphene exfoliated from GO.