Abstract
Nickel titanate on reduced graphene oxide (NiTiO3/rGO) were elaborated by facile microwave ignition method. The prepared nanomaterials were controlled using different ratios of GO to NiTiO3. The synthesized photo catalysts were characterized by X-Ray Diffraction (XRD), Raman Spectroscopy, Infrared Spectroscopy, Transmission Electron Microscopy (TEM), and UV-Reflectance Spectroscopy. The results demonstrate that photocatalytic performance of the photocatalysts for hydrogen generation increases up to 8383 mu mol/(h.g) with increasing graphene content up to 5%). However, further increase in graphene content above this optimum level has decreased the performance of photocatalyst. The enhanced photocatalytic performance for hydrogen evolution is attributed to extension of its absorption edge to the visible light region, directly related to retard recombination of electron-hole pairs due to synergistic effects of NiTiO3 and graphene which leads to more efficient utilization of the solar energy.