• 专利标题:   Removing sulfate impurities in graphene oxide synthesis system by synthesizing graphene oxide using Hummer's method or improved Hummer's method to obtain graphene oxide synthesis system, and then mixing with solution containing cation.
  • 专利号:   CN107285304-A, CN107285304-B
  • 发明人:   YANG X, SHAO B, LIU C, LIU S
  • 专利权人:   UNIV BEIJING NORMAL, UNIV BEIJING NORMAL SCI PARK CO LTD, UNIV BEIJING NORMAL
  • 国际专利分类:   C01B032/198
  • 专利详细信息:   CN107285304-A 24 Oct 2017 C01B-032/198 201777 Pages: 9 Chinese
  • 申请详细信息:   CN107285304-A CN10457827 16 Jun 2017
  • 优先权号:   CN10457827

▎ 摘  要

NOVELTY - The method for removing sulfate impurities in graphene oxide synthesis system involves: (1) synthesizing graphene oxide using Hummer's method or improved Hummer's method, and obtaining graphene oxide synthesis system after synthesis is completed; and (2) mixing the graphene oxide synthesis system with aqueous solution containing metal cation, adding organic solvent having density greater than water and not miscible with water, stirring to get mixed system, and allowing for layering, where the metal cation is capable of forming precipitate with sulfate. USE - The method is useful for removing sulfate impurities in graphene oxide synthesis system (claimed). ADVANTAGE - The method is capable of simply removing the sulfate impurities in graphene oxide synthesis system with high yield.