• 专利标题:   Polyvinylidene fluoride/graphene oxide/silver composite film used for treating sea water and desalting brackish water, comprises polyvinylidene film material, polyethylene and silver ions supported on graphene oxide surface.
  • 专利号:   CN105771689-A
  • 发明人:   LI J, WANG S, ZHANG D, ZHANG Q, NI X
  • 专利权人:   UNIV FUZHOU
  • 国际专利分类:   B01D067/00, B01D069/02, B01D069/12, B01D071/34, C02F001/44
  • 专利详细信息:   CN105771689-A 20 Jul 2016 B01D-071/34 201661 Pages: 7 Chinese
  • 申请详细信息:   CN105771689-A CN10260850 26 Apr 2016
  • 优先权号:   CN10260850

▎ 摘  要

NOVELTY - Polyvinylidene fluoride/graphene oxide/silver composite film comprises polyvinyledene film material coated with dopamine, polyethylene having adhesive properties and silver ions supported on graphene oxide surface. USE - Polyvinylidene fluoride/graphene oxide/silver composite film used for treating sea water, desalting brackish water and in water purification filters (claimed). ADVANTAGE - The polyvinylidene fluoride/graphene oxide/silver composite film is easy to prepare, hydrophilic and has good antibacterial properties. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for method for preparing polyvinylidene fluoride/graphene oxide/silver composite film which involves: (A) adding polyvinylidene fluoride into (hydroxymethyl)aminomethane solution containing dopamine and placing it on a high temperature magnetic stirrer for 14-26 hours; (B) dispersing graphene oxide in deionized water by ultrasonication; (C) removing the polyvinylidene fluoride from magnetic stirrer after 10-20 hours, adding silver nitrate solution and placing on magnetic stirrer for 5-25 minutes at room temperature; (D) adding sodium borohydride solution and continue stirring for next 15-30 hours; (E) rinsing the solution with water; and (F) drying to obtain the composite film.