Graphite Oxide modified TiO2 Composite: An Efficient Photocatalyst for Degradation of Methylene Blue

The graphite oxide (GO)-modified TiO 2 is prepared to enhance the photocatalytic property of TiO 2 for the degradation of organic dye. The structural modification of TiO 2 -GO has been characterized by XRD and FTIR technique. The interfacial electron transfer between the dye (MB) and the photocatalyst has been confirmed by measuring the electrical conductivity during the photocatalytic reaction. The effect of GO-doped TiO 2 photocatalyst, its interaction with the dye (MB) and thereby photo degradation of MB which is exposed to the sunlight irradiation has been studied by UV-visible spectroscopy and the electrical conductivity. The rapid disappearance of the blue color of MB has been observed when it is exposed to the sunlight in presence TiO 2 -GO nano composites. The rapid decrease in absorbance at λ max =663 nm upon adding graphite oxide (GO) to the MB-TiO 2 system is being observed. The degradation efficiency in presence of TiO 2 and TiO 2 -GO was found to be 78.2 and 97.7 percent respectively after 3 h. The reaction rates of Photo degradation of MB by TiO 2 and TiO 2 -GO are found to be 3.54x10 -3 min -1 and 4.70 x10 -3 min -1 respectively. Normal 0 false false false false EN-US X-NONE X-NONE