• 专利标题:   Preparation of graphene-based nanosilver composite, involves adding graphene oxide to water/organic solvent mixture, ultrasonically dispersing, adding silver nitrate solution, reflux-reacting, filtering, washing, and drying.
  • 专利号:   CN103014683-A, CN103014683-B
  • 发明人:   WANG M, RAN C, GAO Y
  • 专利权人:   UNIV XIAN JIAOTONG
  • 国际专利分类:   C04B035/52, C04B035/628, C23C018/42
  • 专利详细信息:   CN103014683-A 03 Apr 2013 C23C-018/42 201363 Chinese
  • 申请详细信息:   CN103014683-A CN10532051 11 Dec 2012
  • 优先权号:   CN10532051

▎ 摘  要

NOVELTY - Graphene oxide is added to a mixed solvent of water and organic solvent and ultrasonically dispersed for 1-2 hours, to obtain 0.25 mg/mL mixed solution. 5% Silver nitrate aqueous solution is added to the mixed solution and magnetically stirred for 10 minutes, to obtain nanosilver/graphene oxide mixed solution. The mass ratio of silver nitrate and graphene oxide is 1:1-50:1. The solution is transferred to an oil bath for reflux reaction for 10-17 hours at 100-150 degrees C, filtered, washed, and dried to obtain a graphene-based nanosilver composite. USE - Preparation of graphene-based nanosilver composite (claimed). ADVANTAGE - The method uses one-step method for reduction-oxidation of graphene and nanosilver particles, which is simple, mild in reaction conditions, and convenient to operate. The nanosilver particles of which the particle size is 16-20 nm in the prepared composite are uniformly distributed on the surface of graphene. The particles are uniform in size, and the density of particles can be controlled by changing the mass ratio of silver nitride and graphene oxide. The method is easy to operate, capable of controlling the product, and environmentally-friendly.