• 专利标题:   Preparation of graphite pencil-modified electrode used for detecting dihydroxybenzene isomer in water, involves immersing graphite pencil electrode in graphene oxide-perfluorinated resin solution, and electrochemically polymerizing.
  • 专利号:   CN111304716-A
  • 发明人:   QIAN X, YANG Y
  • 专利权人:   SHAANXI COAL CHEM IND TECHNOLOGY RES
  • 国际专利分类:   C25D015/00, G01N027/30, G01N027/48
  • 专利详细信息:   CN111304716-A 19 Jun 2020 C25D-015/00 202059 Pages: 10 Chinese
  • 申请详细信息:   CN111304716-A CN10172538 12 Mar 2020
  • 优先权号:   CN10172538

▎ 摘  要

NOVELTY - Preparation of graphite pencil-modified electrode involves ultrasonically dispersing graphene oxide in a perfluorinated resin solution, immersing graphite pencil electrode in obtained graphene oxide suspension, and performing electrochemical polymerization using cyclic voltammetry. USE - Preparation of graphite pencil-modified electrode used for detecting dihydroxybenzene isomer in water (claimed). ADVANTAGE - The method enables economical preparation of graphite pencil-modified electrode with high sensitivity and detection limit. The graphite pencil-modified electrode simultaneously detects three phenolic substances. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for detection of dihydroxybenzene isomer in water, which involves immersing the graphite pencil-modified electrode in 0.2 mol/L disodium hydrogen phosphate solution or 0.1 mol/L sodium hydroxide solution, scanning 30-60 cycles using cyclic voltammetry, testing open circuit potential in an electrochemical workstation, immersing the treated electrode in a phenolic compound solution, and detecting the content of phenolic compound in the phenolic compound solution by a differential pulse voltammetry.