• 专利标题:   Preparing ionic liquid-modified nitrogen-sulfur co-doped graphene oxide composite material comprises e.g. mixing graphene oxide with deionized water, mixing with 1-aminopropyl-3-hydrocarbyl imidazole bromide.
  • 专利号:   CN111229310-A
  • 发明人:   ZHANG W, ZHANG Y, YANG S, YANG D, LI H, YU F, LI C
  • 专利权人:   UNIV HEBEI TECHNOLOGY
  • 国际专利分类:   B01J027/24, B01J031/02, B01J035/00, B01J037/10, B01J037/20, H01M004/88, H01M004/96
  • 专利详细信息:   CN111229310-A 05 Jun 2020 B01J-031/02 202052 Pages: 10 Chinese
  • 申请详细信息:   CN111229310-A CN10083263 08 Feb 2020
  • 优先权号:   CN10083263

▎ 摘  要

NOVELTY - Preparing ionic liquid-modified nitrogen-sulfur co-doped graphene oxide composite material comprises (i) mixing graphene oxide with deionized water to form dispersion, mixing 1-aminopropyl-3-hydrocarbyl imidazole bromide, potassium hydroxide and graphene oxide dispersion, ultrasonically dispersing for 1-2 hours, refluxing the reaction at 40-80 degrees C for 12-36 hours, filtering the obtained solid, washing with ethanol and water respectively, and drying to obtain 1-aminopropyl-3-alkylimidazole bromide and graphene oxide (IL-GO-1), (ii) mixing the obtained product in step (i) with thiourea, adding solvent to dissolve it, magnetically stirring for 0.5-1 hour, placing the solution into a polytetrafluoroethylene-lined hydrothermal reactor, reacting at 160-200 degrees C for 3-6 hours, cooling to room temperature, filtering the obtained solid, washing with ethanol and water respectively, and then drying. USE - The composite material is useful for supporting the composite material on the cathode electrode as a catalyst (claimed). ADVANTAGE - The composite material: has excellent catalytic activity for oxygen reduction. DETAILED DESCRIPTION - Preparing ionic liquid-modified nitrogen-sulfur co-doped graphene oxide composite material comprises (i) mixing graphene oxide with deionized water to form dispersion, mixing 1-aminopropyl-3-hydrocarbyl imidazole bromide, potassium hydroxide and graphene oxide dispersion, ultrasonically dispersing for 1-2 hours, refluxing the reaction at 40-80 degrees C for 12-36 hours, filtering the obtained solid, washing with ethanol and water respectively, and drying to obtain 1-aminopropyl-3-alkylimidazole bromide and graphene oxide (IL-GO-1), where 100-200 ml deionized water is added for every 0.05-0.1 g graphene oxide, 0.1-0.2 g 1-aminopropyl-3-hydroxyimidazole bromide and 0.2-0.4 g potassium hydroxide are added per 100-200 ml graphene oxide dispersion, the 1-aminopropyl-3-hydrocarbylimidazole bromide salt is 1-aminopropyl-3-methylimidazole bromide salt or 1-aminopropyl-3-vinylimidazole bromide salt, (ii) mixing the obtained product in step (i) with thiourea, adding solvent to dissolve it, magnetically stirring for 0.5-1 hour, placing the solution into a polytetrafluoroethylene-lined hydrothermal reactor, reacting at 160-200 degrees C for 3-6 hours, cooling to room temperature, filtering the obtained solid, washing with ethanol and water respectively, and then drying to obtain composite material, the mass ratio between the obtained product and thiourea is 0.05-0.1:1.5-3, and 1.5-3 g thiourea is added per 50-100 ml of solvent.