• 专利标题:   Graphene oxide composite hydrogel used for adsorbing heavy metals, is made of graphene oxide, polyethylene glycol-containing hyperbranched polyester copolymer and poly(trans-4-carbonyl-4-(thiophene-2-yl)but-2-enoic acid).
  • 专利号:   CN115779808-A
  • 发明人:   XU C, HUA M, ZENG L
  • 专利权人:   UNIV GUANGDONG OCEAN
  • 国际专利分类:   B01J013/00, B01J020/26, B01J020/28, B01J020/30, C02F001/28, C02F101/20, C08F120/04
  • 专利详细信息:   CN115779808-A 14 Mar 2023 B01J-013/00 202326 Chinese
  • 申请详细信息:   CN115779808-A CN11335256 28 Oct 2022
  • 优先权号:   CN11335256

▎ 摘  要

NOVELTY - A graphene oxide composite hydrogel is made of graphene oxide, polyethylene glycol-containing hyperbranched polyester copolymer and poly(trans-4-carbonyl-4-(thiophene-2-yl)but-2-enoic acid) in a weight ratio of 1:0.5-0.8:0.2-0.5. USE - Graphene oxide composite hydrogel used for adsorbing heavy metals (claimed). ADVANTAGE - The composite hydrogel has excellent heavy metal adsorption performance, and ensures improved mechanical property of the graphene oxide due to introduction of polyethylene glycol-containing hyperbranched polyester copolymer and poly(trans-4-carbonyl-4-(thiophene-2-yl)but-2-enoic acid) into the molecular structure of graphene oxide. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the hydrogel, which involves (S1) dissolving graphene oxide and polyethylene glycol-containing hyperbranched polyester copolymer in a solvent (B), adding diisocyanate and catalyst, heating and stirring to obtain a copolymer, and (S2) adding diisocyanate and poly(trans-4-carbonyl-4-(thiophene-2-yl)but-2-enoic acid) to the copolymer, heat-reacting, soaking the product in deionized water, and freeze-drying.