• 专利标题:   Preparing negatively charged graphene involves dispersing graphite in water and exfoliating graphite by mechanically by centrifugation.
  • 专利号:   CN105439133-A, CN105439133-B
  • 发明人:   SHEN C, XI F, ZHOU L, XU X
  • 专利权人:   UNIV ZHEJIANG SCI TECH
  • 国际专利分类:   B82Y020/00, B82Y040/00, C01B031/04, C01B032/19
  • 专利详细信息:   CN105439133-A 30 Mar 2016 C01B-031/04 201646 Pages: 13 English
  • 申请详细信息:   CN105439133-A CN10960948 18 Dec 2015
  • 优先权号:   CN10960948

▎ 摘  要

NOVELTY - Preparing negatively charged graphene involves dispersing graphite in water and exfoliating graphite by mechanically by centrifugation to obtain single layer graphene. The carbon and oxygen ratio of graphene is 1.2-1.8:1. USE - Method for preparing negatively charged single layer graphene (claimed). ADVANTAGE - The method enables to prepare negatively charged single layer graphene in a simple and cost effective manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene quantum dots which involves: (A) adding 1,3,6-trinitro-pyrene as a carbon source to 0.25-0.1 mol/L of aqueous alkaline solution; (B) heating hydrothermally in autoclave at 180-200 degrees C for 4-8 hours to synthetic graphene quantum dot; and (C) purifying by freeze-drying to obtain graphene quantum dot solid.