▎ 摘　　要

Reduced graphene oxide-silicate (RGO/SiO2) nanocomposites were prepared by a sol-gel method by mixing 10 wt% and 20 wt% of RGO with tetraethyl orthosilicate (TEOS). RGO sheets were prepared by chemical exfoliation of purified natural graphite powder. The phase formation and the structural transformations of the samples are verified by X-ray diffraction analysis. Thermal behavior was studied using differential thermal analysis (DTA) in air atmosphere. FTIR spectrophotometry was used to determine the short range order of the obtained nanocomposites. Scanning electron microscopy (SEM) with EDS was also used to determine the structure and morphology of the samples in addition to elemental analysis of constituents. The analysis showed that the carbon phases start firing after heating at 400 degrees C to completely disappear between 550 to 600 degrees C. Cristobalite phase appeared at 800 degrees C in the sample containing 20 wt % RGO, while the amorphous silica structure was dominant in the sample containing 10 wt% RGO at the same temperature.