▎ 摘　　要

Graphene sheet has been emerging as a fascinating material with its tantalizing applied foreground. A prerequisite for exploiting most, proposed applications for graphene is to seek for a method that readily and simply produces graphene sheets in large quantities. By far,, graphene sheets can be prepared by three techniques in general. Among them, oxidation and reduction processing graphene sheets is the most suitable for producing graphene sheets in large quantity in this review. In this report, XRD and FT-IR spectra and transmission electron microscopy and fluorescence microscope analysis indicated that graphene single sheets have been readily synthesized through the chemical processing. Moreover, the crystal structure of the graphene nanosheets was maintained intact after chemical functionalization.