Combination of Sonochemical Synthesis and Calcination of Graphene-TiO2 Nanocomposite for Efficient Photocatalytic Degradation of Methyl Orange Dye

Abstract

In this work, a nanostructured graphene-TiO2 nanocomposite was prepared by modified sonochemical method followed by calcination process at 400 ºC and characterized by X-ray diffraction, transmission electron microscopy, UV visible spectroscopy, IR spectroscopy and X-ray photoelectron spectroscopy. The photocatalytic activity of the prepared sample was evaluated by photocatalytic degradation of methyl orange dye. On analysis, visible light absorption was found to be increased for the nanocomposite rather than pure TiO2. About 75% degradation efficiency was exhibited by the prepared GT2 composite under sunlight irradiation.