Study on preparation and decontamination properties of hybrid-photocatalysis based on graphene and TiO_2

摘要

The hybrid-photocatalyst was successfully prepared by compositing graphene and TiO_2 in this thesis. The properties of the hybrid-photocatalyst was stydited by XRD, SEM. The hotocatalytic activity of the hybrid-photocatalyst was evaluated by decolorization of acid yellow dye solution under visible light irradiation. The result shows that the main phase of the hybrid-photocatalyst is antase TiO_2. The effects of different titanium carbon ratio, photocatalysis time, catalyst dosage and pH on the photocatalytic for acid yellow dye are discussed. Under the conditions that titanium carbon ratio 100:50, the photocatalytic time 120 min, catalyst dosing concentration 0.1lg / L and the optimum pH 8, the treatment of methyl orange dye is the best.