ZnO/Graphene nanocomposites (ZnO/G) were prepared through a solvothermal route employing ethylene glycol both as a solvent and reducing agent. The ZnO nanoparticles produced were decorated on the surfaces of graphene sheets as seen from the FE-SEM images. The composites were characterized by DRS-UV-Vis spectrum, X-ray diffraction studies (XRD) and field emission scanning electron microscopy (FE-SEM). Furthermore, the as-prepared graphene-based nanocomposites show an excellent photocatalytic activity towards the photodegradation of methylene blue dye. Copyright © 2013 American Scientific Publishers. All rights reserved.