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  • 专利标题:   Treating waste liquid produced during preparation of graphene oxide comprises adding neutralizing agent to waste liquid, when the pH is raised, and adding precipitating agent.
  • 专利号:   CN108147430-A
  • 发明人:   ZHANG Y, ZHANG X, LIU Y, MIAO X, CHEN S, CHEN Y, WANG W, CHENG J, LI D, LIN Z, LIN S, FENG W, LI X, XUE X
  • 专利权人:   FUJIAN MATERIAL STRUCTURE INST
  • 国际专利分类:   C01C001/24, C01C001/242, C01D005/02, C01G045/12, C07C051/41, C07C055/07
  • 专利详细信息:   CN108147430-A 12 Jun 2018 C01C-001/24 201852 Pages: 8 Chinese
  • 申请详细信息:   CN108147430-A CN11386618 20 Dec 2017
  • 优先权号:   CN11386618

▎ 摘　　要

NOVELTY - Treating waste liquid produced during preparation of graphene oxide comprises adding neutralizing agent to waste liquid; when the pH is raised to 5-8, adding precipitating agent; where the neutralizing agent is basic compound containing nitrogen; and precipitating agent is compound containing oxalate (C2O4(2-)). USE - The method is useful for treating waste liquid produced during preparation of graphene oxide. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) environmentally-friendly preparing graphene oxide comprises preparing graphene oxide by graphite oxide reduction method, and treating produced waste liquid by above mentioned method; and (2) environmentally-friendly preparing graphene comprising (1) preparing graphene oxide by above mentioned, and (2) subjecting the graphene oxide obtained in the step (1) to chemical reduction or thermal reduction.