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  • 专利标题:   Preparing graphene quantum dot sensitized europium-terbium co-doped layered hydroxide by treating europium-terbium co-doped layered hydroxide compound to form citrate-intercalated europium-terbium co-doped layered hydroxide, and carbonizing.
  • 专利号:   CN112812771-A, CN112812771-B
  • 发明人:   YANG X, SANG S, FENG P
  • 专利权人:   UNIV BEIJING NORMAL
  • 国际专利分类:   B82Y020/00, B82Y030/00, B82Y040/00, C01B032/205, C01B032/21, C01F017/10, C01F017/224, C09K011/65
  • 专利详细信息:   CN112812771-A 18 May 2021 C09K-011/65 202155 Pages: 14 Chinese
  • 申请详细信息:   CN112812771-A CN11561153 25 Dec 2020
  • 优先权号:   CN11561153

▎ 摘　　要

NOVELTY - Method for preparing graphene quantum dot sensitized europium-terbium co-doped layered hydroxide involves (a) preparing europium-terbium co-doped layered hydroxide compound (I), (b) treating the compound (I) by using an ion exchange method to synthesize a citrate-intercalated (CA) europium-terbium co-doped layered hydroxide compound (II), and (c) hydrothermally carbonizing the compound (II) to obtain a graphene quantum dot (GQD) sensitized europium-terbium co-doped layered hydroxide (III). USE - The method is useful for preparing graphene quantum dot sensitized europium-terbium co-doped layered hydroxide. ADVANTAGE - The method adopts large-scale production, and provides product with excellent optical properties. DETAILED DESCRIPTION - Method for preparing graphene quantum dot sensitized europium-terbium co-doped layered hydroxide involves (a) preparing europium-terbium co-doped layered hydroxide compound of formula: NO3-LEuxTb1-xH (I), (b) treating the compound (I) by using an ion exchange method to synthesize a citrate-intercalated (CA) europium-terbium co-doped layered hydroxide of formula: CA-LEuxTb1-xH (II), (c) hydrothermally carbonizing the compound (II) to obtain a graphene quantum dot-sensitized europium-terbium co-doped layered hydroxide of formula: GQD-LEuxTb1-xH (III). CA=citrate-intercalated; GQD=graphene quantum dot;and x=0.01-1.