• 专利标题:   Preparation of nano-heavy metal wastewater ion-adsorption microspheres, involves dispersing nano-graphene microspheres in ethanol, and mixing with 1,3,5-tris(3-(trimethoxysilyl)propyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione and haloalkane.
  • 专利号:   CN107913677-A
  • 发明人:   XIANG H
  • 专利权人:   CHENGDU YUYA TECHNOLOGY CO LTD
  • 国际专利分类:   B01J020/22, B01J020/28, B01J020/30, C02F001/28, C02F001/30, C02F101/20
  • 专利详细信息:   CN107913677-A 17 Apr 2018 B01J-020/22 201831 Pages: 7 Chinese
  • 申请详细信息:   CN107913677-A CN11322920 12 Dec 2017
  • 优先权号:   CN11322920

▎ 摘  要

NOVELTY - Preparation of nano-heavy metal wastewater ion-adsorption microspheres, involves (i) ultrasonically dispersing graphene oxide in deionized water, adding pore-forming agent and glucose, mixing, electrostatically spraying, immersing in organic solvents, drying to obtain porous nano-graphene microspheres, (ii) dispersing nano-graphene microspheres in ethanol, adding 1,3,5-tris(3-(trimethoxysilyl)propyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione and haloalkane, stirring, centrifuging, washing, drying, (iii) immersing in aqueous solution of hematoporphyrin, carrying out ion exchange. USE - Preparation of nano-heavy metal wastewater ion-adsorption microspheres (claimed). ADVANTAGE - The ion-adsorption microspheres have excellent adsorption effect on heavy metal ions, large adsorption capacity and easy adsorption and desorption property, and is low cost. DETAILED DESCRIPTION - Preparation of nano-heavy metal wastewater ion-adsorption microspheres, involves (i) mixing graphene oxide with deionized water, ultrasonically dispersing for 15-20 minutes, adding pore-forming agent, dispersing evenly pore-forming agent in graphene oxide, adding glucose, mixing evenly, electrostatically spraying, performing wet collection, then immersing in organic solvents for 5-6 hours, using near-point drying method for drying for 6-10 hours to obtain porous nano-graphene microspheres, (ii) dispersing nano-graphene microspheres in ethanol, adding 1,3,5-tris(3-(trimethoxysilyl)propyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, stirring at 40-50 degrees C for 3-5 hours, adding haloalkane, stirring for 4-6 hours, centrifuging, performing centrifugal washing with ethyl acetate and diethyl ether 3-5 times, drying in vacuum drying oven at 50-70 degrees C for 10-12 hours to obtain surface-modified porous graphene microspheres, (iii) immersing prepared surface-modified porous graphene microspheres in an aqueous solution of hematoporphyrin with a mass fraction of 10-20% for 60-72 hours, carrying out ion exchange, filtering and washing with water 3-5 times, drying in a vacuum oven at 50-70 degrees C for 10-12 hours.