• 专利标题:   Preparing fluorescent graphene quantum dot powder used for preparing LED device, by dissolving thiourea in water, adding 1,3,6-trinitropyrene, dialyzing, dissolving melamine and paraformaldehyde, mixing with quantum dot solution, and drying.
  • 专利号:   CN111977640-A
  • 发明人:   CHEN Z, ZHANG L, XIANG B, CUI X, LIAO T
  • 专利权人:   UNIV QUANZHOU NORMAL
  • 国际专利分类:   B82Y020/00, B82Y040/00, C01B032/184, C09K011/65, H01L033/50
  • 专利详细信息:   CN111977640-A 24 Nov 2020 C01B-032/184 202002 Pages: 7 Chinese
  • 申请详细信息:   CN111977640-A CN10889926 28 Aug 2020
  • 优先权号:   CN10889926

▎ 摘  要

NOVELTY - Method for preparing fluorescent graphene quantum dot powder, involves (a) dissolving thiourea in water, adding 1,3,6-trinitropyrene, ultrasonically treating for uniformly mixing, and performing hydrothermal reaction, (b) after performing hydrothermal reaction, cooling reaction solution to room temperature, performing suction filtration, and dialyzing with dialysis bag, (c) dissolving melamine and paraformaldehyde in water, uniformly mixing with graphene quantum dot solution obtained outside the dialysis bag in step (b), and heating in magnetic stirring water bath to obtain graphene quantum dot microsphere, and (d) drying obtained graphene quantum dot microspheres to obtain green fluorescent graphene quantum dot powder. USE - The method is used for preparing fluorescent graphene quantum dot powder useful in preparation of LED device (claimed). ADVANTAGE - The method does not need to prepare prepolymer, directly prepares the solid graphene quantum dots by one-pot method, is simple, and shortens the preparation time, and the prepared fluorescent graphene quantum dot powder is environmentally-friendly, and has excellent fluorescence efficiency.