• 专利标题:   Composite film useful for purifying dye wastewater comprises graphene oxide interspersed between interlaced stacked polyacrylonitrile fibers to three-dimensional network support structure.
  • 专利号:   CN115591417-A
  • 发明人:   ZHANG J, LIU L, DING H, WEI D, CHEN D, SUN Q, NIE H
  • 专利权人:   UNIV DONGHUA, SHANDONG ZHONGKANG GUOCHUANG ADVANCED
  • 国际专利分类:   B01D067/00, B01D069/02, B01D069/12, B01D071/02, B01D071/42, C02F001/28, C02F001/44, C02F101/20, C02F101/30
  • 专利详细信息:   CN115591417-A 13 Jan 2023 B01D-071/42 202317 Chinese
  • 申请详细信息:   CN115591417-A CN11381939 07 Nov 2022
  • 优先权号:   CN11381939

▎ 摘  要

NOVELTY - Composite film comprises graphene oxide and polyacrylonitrile fibers. The graphene oxide is interspersed between the interlaced stacked polyacrylonitrile fibers to form a three-dimensional network support structure. The porosity of the composite film is 18-27%, the water flux is 330-850 l/m2hours, and the specific surface area is 15-400 m2/g. USE - The composite film is useful for purifying dye wastewater, preferably methylene blue dye and malachite green dye wastewater. ADVANTAGE - The composite film has malachite green dye removal rate of 78-94.5% and adsorption capacity of 9-18 mg/g, has methylene blue dye removal rate of 70-98% and adsorption capacity of 7.8-13 mg/g, has malachite green dye or methylene blue dye removal rate of remains at 65-91% after repeated use for 4 times, breaking strength of 1.28139-1.44552 N, and elongation at break of 19.69-23.56%. The method is simple and suitable for large-scale production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing composite film, comprising subjecting inorganic dispersion solution of graphene oxide and the polyacrylonitrile solution to conjugate electrospinning.