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Photoelectrochemical Investigation of TiO2-Graphene Nanocomposites
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1  Iran University of Science and Technology

Abstract: Recently, renewable energy sources attract lots of attention. Graphene oxide nanostructures are currently under intensive research and development. Graphene consider for using as photovoltaic devises especially for solar cells because of its unique usages for electron transfer, harvesting light and convert it to photocurrent. The photosensitization of TiO2 with graphene is considered to be an effective approach to improving the visible spectral absorption and photo activity under visible light irradiation. Graphene oxide reduction was method of graphene synthesis.  TiO2 was added to different content of graphene oxide and with hydrothermal method 1, 3 and 5 percentage of graphene-TiO2 composite (TG) was synthesized the prepared samples were characterized by XRD, Raman, DRS, and SEM. A dispersed suspension of TiO2 and different percentages of TG were drop casted on FTO and dried in room temperature Photoelectrochemical experiments exhibited that the photocurrent response of three percentages of TG nanocomposite was higher than others.
Keywords: Graphene; TiO2; nanocomposite; Phtoelectrochemical