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  • 专利标题:   Preparation of graphene quantum dots of different oxygen content used in fluorescent material, involves dispersing graphene oxide in peroxide solution, mixing dispersion with lye, purifying to obtain powder, and performing gradient elution.
  • 专利号:   WO2017032330-A1, CN106477558-A, US2018230379-A1, JP2018532686-W
  • 发明人:   ZHANG L, ZHANG M
  • 专利权人:   CHINA NANO ENG SYSTEMS CORP, SHENZHEN YUEWANG ENERGY SAVING TECH SERV, ZHANG L, LINDE Z
  • 国际专利分类:   B82Y030/00, C09K011/65, C01B032/184, B82Y020/00, B82Y040/00, C01B032/194, C01B032/196, C01B032/198, C09K011/08
  • 专利详细信息:   WO2017032330-A1 02 Mar 2017 201720 Pages: 29 Chinese
  • 申请详细信息:   WO2017032330-A1 WOCN096709 25 Aug 2016
  • 优先权号:   CN10528994

▎ 摘　　要

NOVELTY - Preparation of graphene quantum dots of different oxygen content involves dispersing a graphene oxide in the peroxide solution to obtain an oxidized graphene dispersion, mixing the oxidized graphene dispersion with lye and purifying to obtain a graphene quantum dots dry powder, and performing, after loading the graphene quantum dot powder on a carrier, gradient elution to obtain different oxygen content of graphene quantum dots. USE - Preparation of graphene quantum dots of different oxygen content used in fluorescent material (all claimed) for light-emitting diode and cell labeling applications. ADVANTAGE - The method enables simple preparation of graphene quantum dots of different oxygen content by controlling oxygen content and emission wavelength of product. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for graphene quantum dots, which have an oxygen content of 2-40%.