▎ 摘　　要

The method of hydrothermal reduction was used to reduce graphite oxide (GO) and a series of experiments were made to investigate the influence of hydrothermal temperature, time and concentration on the reduction and dispersion effects. The atomic force Microscopy (AFM), UV/Vis spectroscopy (UV-vis), Fourier transform infrared (FTIR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA) were used to confirm that the black suspension obtained in the critical conditions had been transformed into reduced graphene oxide (RGO). The as-prepared RGO can be dispersed in water forming suspensions with long-term stability without any organic solvents and other substances, which will facilitate the preparation of RGO-polymer composites and its applications. (C) 2011 Published by Elsevier B.V.