• 专利标题:   Nitrogen-doped graphene quantum dot derived from nanomaterial-lignin useful in field of biological medicine, comprises nanomaterial lignin powder, yttrium oxide powder, alumina powder, and silicon nitride powder.
  • 专利号:   CN112723348-A
  • 发明人:   CHEN W, ZHAO Z, LOU R, LIU X, CHENG K, JIAO X
  • 专利权人:   UNIV SHAANXI SCI TECHNOLOGY
  • 国际专利分类:   A61K047/04, A61K047/30, A61K009/14, B82Y020/00, B82Y040/00, C01B032/184, C09K011/65
  • 专利详细信息:   CN112723348-A 30 Apr 2021 C01B-032/184 202145 Pages: 8 Chinese
  • 申请详细信息:   CN112723348-A CN10169348 07 Feb 2021
  • 优先权号:   CN10169348

▎ 摘  要

NOVELTY - Nitrogen-doped graphene quantum dot derived from nanomaterial-lignin, comprises 1-3 wt.% nanomaterial lignin powder, 3-5 wt.% yttrium oxide powder, 5-7 wt.% alumina powder, and 87-89 wt.% silicon nitride powder. USE - The nitrogen-doped graphene quantum dot derived from nanomaterial-lignin useful in field of biological medicine (claimed). ADVANTAGE - The method is simple and short; and no toxic substances are generated in the conversion process. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the nanomaterial-lignin-derived nitrogen-doped graphene quantum dot, comprising (i) uniformly mixing the above raw materials and drying to obtain the composite powder; and (ii) placing the uniformly mixed composite powder into the mold for pre-pressing, and sintering at 1600-1800 degrees C with a pressure of 20-40 MPa under the protection of nitrogen atmosphere, maintaining heat preservation and pressure for 30-40 minutes, heating at 750-850 degrees C, maintaining the temperature for 30-60 minutes.