▎ 摘　　要

NOVELTY - Aniline and graphene are added into surfactant-containing protonic acid solution in the mass ratio of 1:2-1:40. Nano polyaniline/graphene composite material is prepared through in-situ polymerization method. Titanium dioxide sol is prepared using sol-gel method. Nano polyaniline/graphene composite material is added to titanium dioxide sol, uniformly mixed, maintained and sol is aged. Obtained material is dried, milled and calcined. Polyaniline is removed from obtained mixture to obtain porous titanium dioxide/graphene composite material. USE - Preparation of porous titanium dioxide/graphene composite material (claimed) used in waste gas treatment and wastewater treatment. ADVANTAGE - The method efficiently provides porous titanium dioxide/graphene composite material having high photocatalytic efficiency. The contact area of titanium dioxide and pollutants is increased, the separating efficiency of photo-generated electrons and holes is improved. DETAILED DESCRIPTION - Proton acid solution having concentration of 0.02-1 M and dodecylbenzene sulfonic acid having concentration of 0.02-1 M are mixed in the volume ratio of 1:1-8:1 to obtain surfactant-containing protonic acid solution. Aniline and graphene are added into surfactant-containing protonic acid solution in the mass ratio of 1:2-1:40. Nano polyaniline/graphene composite material is prepared through in-situ polymerization method. Titanium dioxide sol is prepared using sol-gel method. Nano polyaniline/graphene composite material (0.05-0.20 g) is added to 50 mL of titanium dioxide sol, uniformly mixed, maintained and the sol is aged for 3-5 days. The obtained material is dried in drying oven at 60-120 degrees C, milled, and calcined at 200-550 degrees C for 30 minutes to 2 hours. Polyaniline is removed from obtained mixture to obtain porous titanium dioxide/graphene composite material.