• 专利标题:   Preparing reduced graphene oxide/zinc oxide hollow microspheres comprises e.g. dissolving zinc acetate dihydrate in anhydrous ethanol, stirring and adding ethanolamine and stirring, centrifugal collecting solid product, washing and drying.
  • 专利号:   CN107188164-A
  • 发明人:   MA Z, SONG P, WANG Q, YANG Z, ZHONG X
  • 专利权人:   UNIV JINAN
  • 国际专利分类:   C01B032/194, C01G009/02
  • 专利详细信息:   CN107188164-A 22 Sep 2017 C01B-032/194 201774 Pages: 7 Chinese
  • 申请详细信息:   CN107188164-A CN10559365 11 Jul 2017
  • 优先权号:   CN10559365

▎ 摘  要

NOVELTY - Preparing reduced graphene oxide/zinc oxide hollow microspheres comprises e.g. dissolving zinc acetate dihydrate in anhydrous ethanol, stirring and adding ethanolamine and stirring, centrifugal collecting the solid product, washing and drying to obtain hexagonal sheet lapped growth of zinc oxide hollow microsphere, and then ultrasonically dispersing in ethanol solution, then adding aminopropyl triethoxysilane, washing and drying and preparing graphene oxide by modified Hummers method, ultrasonically dispersing in water to obtain graphene oxide colloidal solution and post-processing. USE - The method is useful for preparing reduced graphene oxide/zinc oxide hollow microspheres (claimed). ADVANTAGE - The method: has simple preparation process. DETAILED DESCRIPTION - Preparing reduced graphene oxide/zinc oxide hollow microspheres comprises (i) dissolving zinc acetate dihydrate in 10-100ml of anhydrous ethanol, stirring and adding ethanolamine and then stirring for 1 hours, and reacting the resulting solution in a reaction vessel at 150-180 degrees C for 24-38 hours, centrifugal collecting the solid product, and washing by deionized water and absolute ethyl alcohol for many times, then placing in the drying box, drying at 60 degrees C for 24 hours, and then high temperature calcining in the muffle furnace at 400-600 degrees C and insulating for 2-5 hours to obtain hexagonal sheet are lapped growth of zinc oxide hollow microsphere, and controlling concentration of zinc acetate dihydrate to 0.01-0.1 mol/l, the volume of ethanolamine is 20-50 ml, and controlling the ratio of zinc acetate dihydrate and ethanolamine is 1:0.01-0.1, (ii)taking zinc oxide product obtained in step (i), ultrasonic dispersion in 10-100 ml ethanol solution, then adding aminopropyl triethoxysilane, stirring at 60-80 degrees C for 4-6 hours, then cooling, washing the solid with ethanol and drying overnight in a drying oven at 60 degrees C and controlling concentration of zinc oxide is 0.01-0.1 mol/l, the volume of aminopropyl triethoxysilane is 0.5-1 ml, the molar ratio between zinc oxide and aminopropyl triethoxysilane is 1:0.001-0.01, (iii) preparing graphene oxide by modified Hummers method, then ultrasonically dispersing in 10-100 ml water to obtain graphene oxide colloidal solution, where the concentration of graphene oxide is 0.1-1 mg/ml, then dispersing sample obtained in step (ii) with graphene oxide colloidal solution and then ultrasonic dispersing for 30 minutes, and (iv) transferring resulting solution to the reactor at 120-160 degrees C for 14-20 hours and washing the reaction mixture with deionized water and absolute ethanol and drying at -50 degrees C for 24 hours to obtain reduced graphene oxide coated hexagonal Lamellar lumps of zinc oxide microspheres.