• 专利标题:   Preparing nitrogen sulfur co-doped graphene quantum dots by performing surface nitrification treatment of pyrene, subjecting to hydrothermal reaction and hydrothermally reacting graphene quantum dots with aqueous ammonia and sulfur.
  • 专利号:   CN105567230-A, CN105567230-B
  • 发明人:   LI M, LI X, LUO Y, WEN J, TANG T, XIAO J
  • 专利权人:   UNIV GUILIN TECHNOLOGY
  • 国际专利分类:   B01J027/24, C02F001/30, C02F101/38, C09K011/65
  • 专利详细信息:   CN105567230-A 11 May 2016 C09K-011/65 201664 Pages: 11 English
  • 申请详细信息:   CN105567230-A CN10097245 22 Feb 2016
  • 优先权号:   CN10097245

▎ 摘  要

NOVELTY - The method for the preparation of nitrogen sulfur co-doped graphene quantum dots involves performing surface nitrification treatment of pyrene at a high temperature and pressure, subjecting to hydrothermal reaction to remove pyrene surface nitro groups and further cutting a hexagonal ring structure of pyrene to obtain graphene quantum dots, and hydrothermally reacting graphene quantum dots with aqueous ammonia and sublimed sulfur at high temperature 150-200 degrees C and pressure to obtain nitrogen-sulfur co-doped graphene quantum dot. USE - Method is useful for preparing nitrogen sulfur co-doped graphene quantum dots, which is useful for photocatalysis applications (claimed). ADVANTAGE - The method enables simple preparation of nitrogen sulfur co-doped graphene quantum dots with superior optical properties and high yield and product rate and without environmental pollution. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for nitrogen sulfur co-doped graphene quantum dots prepared by the above method.