• 专利标题:   PROCESS FOR PREPARING GRAPHENE-BASED MATERIALS (GRAPHENE OXIDE AND REDUCED GRAPHENE OXIDE) ON VERY LARGE SURFACES BY CHEMICAL EXFOLIATION.
  • 专利号:   RO131216-A2, RO131216-B1
  • 发明人:   COTET L C, DANCIU V, BAIA G L
  • 专利权人:   UNIV CLUJNAPOCA BABESBOLYAI
  • 国际专利分类:   C01B031/04, C23C016/26, C23C016/44
  • 专利详细信息:   RO131216-A2 30 Jun 2016 C01B-031/04 201655 Pages: 0 English
  • 申请详细信息:   RO131216-A2 RO001016 22 Dec 2014
  • 优先权号:   RO001016

▎ 摘  要

NOVELTY - The invention relates to a process for preparing graphene-based materials with application in energetics, environment protection and medicine. According to the invention, the process comprises the oxidative chemical exfoliation of graphite, followed by washing/ centrifugation/ ultrasonication/ sedimentation stages, to result in a graphene oxide precursor colloidal solution from the centrifugation of which three phases of different physical properties are obtained, they being used for preparing transparent/ opaque and flexible/ rigid films or membranes; further on, the graphene-oxide films or membranes are thermally reduced in air or chemically reduced in a controlled manner to prepare materials based on reduced graphene oxide.