• 专利标题:   Preparation of cyclodextrin-graphene microsphere for removing heavy metal ions and organic pollutants in water involves preparing graphene oxide solution and cyclodextrin solution, adding reducing agent, and dropping cross-linking agent.
  • 专利号:   CN103357388-A
  • 发明人:   LI N, LIU W, SUN X, WANG Q, YANG L, ZHAO J
  • 专利权人:   UNIV XINXIANG MEDICAL
  • 国际专利分类:   B01J020/26, B01J020/28, B01J020/30, C02F001/28, C02F001/58, C02F001/62
  • 专利详细信息:   CN103357388-A 23 Oct 2013 B01J-020/26 201412 Pages: 7 Chinese
  • 申请详细信息:   CN103357388-A CN10334300 05 Aug 2013
  • 优先权号:   CN10334300

▎ 摘  要

NOVELTY - A cyclodextrin-graphene microsphere is prepared by (1) preparing graphene oxide solution and cyclodextrin solution; (2) mixing prepared graphene oxide solution and cyclodextrin solution, evaporating, adding reducing agent, vacuum drying to obtain cyclodextrin-graphene composite; (3) adding obtained cyclodextrin-graphene composite with dimethyl sulfoxide (DMSO) and dimethyl silicone oil (PDMS), dropping toluene-2,4-diisocyanate (TDI) as cross-linking agent, diluting with acetone and hexane; and (4) successively washing with tetrahydrofuran, distilled water, and ethanol and vacuum drying. USE - Preparation of cyclodextrin-graphene microsphere for removing heavy metal ions and organic pollutants in water (claimed). ADVANTAGE - Product has low cost and large specific surface area, reduces agglomeration of graphene, and adsorbs more organic pollutants. DETAILED DESCRIPTION - A cyclodextrin-graphene microsphere is prepared by (1) preparing graphene oxide solution and cyclodextrin solution; (2) mixing prepared graphene oxide solution and cyclodextrin solution, evaporating, adding certain amount of reducing agent, shaking for some minutes, evaporating moisture, vacuum drying to obtain cyclodextrin-graphene composite; (3) adding obtained cyclodextrin-graphene composite with dimethyl sulfoxide (DMSO) and dimethyl silicone oil (PDMS), heating, stirring, dropping toluene-2,4-diisocyanate (TDI) as cross-linking agent, continuously stirring, cooling, diluting with acetone and hexane, filtering to obtain microsphere; and (4) successively washing with tetrahydrofuran, distilled water for 2 times, and ethanol, collecting product, and vacuum drying. DESCRIPTION OF DRAWING(S) - The drawing shows a graph of a relationship of adsorption amount of organic pollutant and its initial concentration in water.