• 专利标题:   Industrial production for graphene comprises oxidizing graphite powder, diluting graphite oxide with water, adding organic flocculant, collecting lower sediment after repeated flocculation, ultrasonicating sediments and freeze-drying.
  • 专利号:   CN108793143-A
  • 发明人:   ZHENG T, CAO S, ZHAO Y, QIANG G, MA J, YU X, JIANG W
  • 专利权人:   NANTONG BAICHUAN NEW MATERIALS CO LTD, JIANGSU BAICHUAN HIGHTECH NEW MATERIALS
  • 国际专利分类:   C01B032/192
  • 专利详细信息:   CN108793143-A 13 Nov 2018 C01B-032/192 201908 Pages: 6 Chinese
  • 申请详细信息:   CN108793143-A CN10928590 15 Aug 2018
  • 优先权号:   CN10928590

▎ 摘  要

NOVELTY - Industrial production of graphene comprises oxidizing graphite powder with nitrate in mixed liquid of strong acid and strong oxidant for 1-60 hour, diluting with water, adding hydrogen peroxide, and centrifuging after 0.5-6 hours to obtain oxidized graphite and aqueous solution containing inorganic ion; diluting graphite oxide with water, adding organic flocculant, layering liquid, removing upper layer clear liquid, and collecting lower sediment material after repeated flocculation; and ultrasonicating sediments and freeze-drying. USE - Industrial production for graphene. ADVANTAGE - The method quickly separates graphite oxide from residual impurities, enables graphene to have more uniformity and dispersibility, and realizes efficient mass production of graphene while ensuring quality.