Synthesis of Various Polymorphs TiO2 Nanoparticles on Reduced Graphene Oxide Composite with Enhanced Photocatalytic Activity

Here we used a hydrothermal approach to prepare mixture polymorphs TiO2 nanoparticles homogenously disperse on the reduced graphene oxide sheets. The prepared products were characterized by X-ray powder diffraction, transmission electron microscope, thermogravimetry-differential scanning calorimetry and UV–vis Spectrophotometer. Compared with pure TiO2, the TiO2- reduced graphene oxide composite exhibited better photocatalytic activity. The degradation percentage of rhodamine B reached a degree of 94.6% after visible light irradiation for 20 min, which is much higher than pure TiO2, 22.4%. The possible reason for the enhanced photocatalytic activity was also investigated.