• 专利标题:   Preparation of porous titanium dioxide/graphene composite material used in e.g. wastewater treatment, involves adding nano polyaniline/graphene composite material to titanium dioxide sol, mixing, aging sol, drying and calcining.
  • 专利号:   CN103143338-A, CN103143338-B
  • 发明人:   YANG G, XIAO H, ZHOU W, DENG Q, DENG S, SHEN F, ZHANG Y, LAN L, WU J, ZHONG J
  • 专利权人:   UNIV SICHUAN AGRIC
  • 国际专利分类:   B01J021/18, B01J035/10
  • 专利详细信息:   CN103143338-A 12 Jun 2013 B01J-021/18 201401 Pages: 5 Chinese
  • 申请详细信息:   CN103143338-A CN10092185 21 Mar 2013
  • 优先权号:   CN10092185

▎ 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.