• 专利标题:   Graphene composite photocatalytic ultrafiltration membrane used for removing difficult-to-degrade organic substances in water, comprises polysulfone ultrafiltration membrane prepared by blending with graphene oxide.
  • 专利号:   CN110813110-A
  • 发明人:   XU Y
  • 专利权人:   XU Y
  • 国际专利分类:   B01D061/14, B01D067/00, B01D069/02, B01D071/68, B01J021/06, B01J035/02, C02F001/30, C02F001/44, C02F101/30
  • 专利详细信息:   CN110813110-A 21 Feb 2020 B01D-071/68 202024 Pages: 6 Chinese
  • 申请详细信息:   CN110813110-A CN11114042 14 Nov 2019
  • 优先权号:   CN11114042

▎ 摘  要

NOVELTY - Graphene composite photocatalytic ultrafiltration membrane comprises a polysulfone ultrafiltration membrane prepared by blending with graphene oxide and an aminated titanium dioxide nanoparticle implanted on the surface of a polysulfone ultrafiltration channel. The filter membrane is formed by phase-changing a semi-cured polysulfone membrane in a mixed coagulation bath containing titanium dioxide nanoparticles and water. USE - Graphene composite photocatalytic ultrafiltration membrane used for removing difficult-to-degrade organic substances in water. ADVANTAGE - The graphene composite photocatalytic ultrafiltration membrane has improved binding force through physical and chemical interaction. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene composite photocatalytic ultrafiltration membrane, which involves: (A) mixing certain amount of polysulfone, solvent, pore-forming agent, and graphene oxide with stirring at 30-60 degrees C to form a mixed solution to obtain a casting film solution; (B) mixing the aminated titanium dioxide nanoparticles with pure water to form titanium dioxide coagulation liquid; (C) pouring the casting film on a smooth glass plate with a certain thickness; (D) curing the polysulfone membrane in a pure water coagulation bath at 60 degrees C for 5-10 minutes; (E) immersing formed polysulfone ultrafiltration membrane in ion water at room temperature for 12-48 hours; and (F) drying at room temperature to form the graphene composite photocatalytic ultrafiltration membrane.