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  • 专利标题:   Purification of graphene quantum dots involves taking graphene quantum dot dispersion, adding didodecyl dimethyl ammonium bromide, sonicating, adding hexane or chloroform, ultrasonically agitating, removing aqueous phase, and extracting.
  • 专利号:   CN104876212-A
  • 发明人:   CHEN L, FANG H, SHI W, SHI G, XU G, WANG L, WU M, PENG B
  • 专利权人:   UNIV SHANGHAI
  • 国际专利分类:   C01B031/04
  • 专利详细信息:   CN104876212-A 02 Sep 2015 C01B-031/04 201610 Pages: 7 Chinese
  • 申请详细信息:   CN104876212-A CN10174759 14 Apr 2015
  • 优先权号:   CN10174759

▎ 摘　　要

NOVELTY - Graphene quantum dots are purified by taking graphene quantum dot dispersion, adding didodecyl dimethyl ammonium bromide as cationic surfactant at mass ratio of 1:10, sonicating for 5-10 minutes, adjusting pH value to 2, adding hexane or chloroform as organic extracting agents at mass ratio of 1:1, ultrasonically agitating for 5 minutes, removing aqueous phase, extracting twice or thrice, combining organic extracts, and recovering organic extractant. USE - Method for purifying graphene quantum dots (claimed). ADVANTAGE - The method has high recycling rate.