Graphene oxide (GO) was prepared by modified Hummers method from different carbon sources: expanded graphite and 4, 8, 12-pellets graphene. GO samples were studied by Scanning Electron Microscopy, Transmission Electron Microscopy, Raman Spectroscopy, Xray diffraction and UV-vis spectroscopy. Then, GO was used to obtain TiO2/GO nano composite electrodes via electrochemical deposition process. Titanium dioxide nanotubes (TiO2NT) were obtained via anodization in electrolyte containing ethylene glycol with 1 wt % NH4F. Different conditions of deposition process of GO were examined. The resulting electrodes were characterized by SEM, TEM, X-ray diffraction, UV-vis spectroscopy and electrochemical methods. The results have shown that the expanded graphite is a good carbon source to synthesize highly oxidized graphene oxide. The composite electrodes have interesting electrochemical properties and are promising materials for photoanodes. Copyright (C) 2016, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.