• 专利标题:   Preparing reduced graphene oxide (RGO)-based magnetic lithium-ion imprinted polymer with high anti-agglomeration, involves dissolving reduced graphene oxide in deionized water, then adding ferrous sulfate heptahydrate and ferric trichloride hexahydrate, and then shaking in water bath in shaker.
  • 专利号:   CN114984926-A
  • 发明人:   CHEN Z, ZHANG L, PENG Y, BI J, LEE J
  • 专利权人:   UNIV NORTHEAST DIANLI
  • 国际专利分类:   B01J020/26, B01J020/28, B01J020/30
  • 专利详细信息:   CN114984926-A 02 Sep 2022 B01J-020/26 202295 Chinese
  • 申请详细信息:   CN114984926-A CN10508305 11 May 2022
  • 优先权号:   CN10508305

▎ 摘  要

NOVELTY - Preparing reduced graphene oxide (RGO)-based magnetic lithium-ion imprinted polymer with high anti-agglomeration, involves dissolving the reduced graphene oxide in deionized water, then adding ferrous sulfate heptahydrate (FeSO4.7H2O) and ferric trichloride hexahydrate (FeCl3.6H2O), and then shaking in a water bath in a shaker and adding to the solution sodium hydroxde (NaOH) solution dropwise under the condition of feeding nitrogen, adjusting pH of the system, and finally oscillating reaction in a water bath in a shaker under the protection of nitrogen atmosphere to obtain reaction product I. The reaction product is washed, and then dried to obtain Fe3O4/RGO. The 1-aza-12 -Crown4-ether, anhydrous lithium chloride, 3-aminopropyltriethoxysilane, ethyl orthosilicate and Fe3O4/RGO are added to anhydrous ethanol and stirred well, and then added a mixture of deionized water/ammonia water. USE - Method for preparing reduced graphene oxide (RGO)-based magnetic lithium-ion imprinted polymer with high anti-agglomeration. ADVANTAGE - The high anti-agglomeration RGO-based magnetic lithium-ion imprinted polymer has obvious anti-agglomeration properties, and significantly improves saturated adsorption capacity, and also has an adsorption rate of 99.9% to lithium ions. DETAILED DESCRIPTION - Preparing RGO-based magnetic lithium ion imprinted polymer with high anti-agglomeration, involves dissolving the reduced graphene oxide in deionized water, then adding ferrous sulfate heptahydrate (FeSO4.7H2O) and ferric trichloride hexahydrate (FeCl3.6H2O), and then shaking in a water bath in a shaker and adding to the solution sodium hydroxde (NaOH) solution dropwise under the condition of feeding nitrogen, adjusting pH of the system, and finally oscillating reaction in a water bath in a shaker under the protection of nitrogen atmosphere to obtain reaction product I. The reaction product is washed, and then dried to obtain Fe3O4/RGO. The 1-aza-12 -Crown4-ether, anhydrous lithium chloride, 3-aminopropyltriethoxysilane, ethyl orthosilicate and Fe3O4/RGO are added to anhydrous ethanol and stirred well, and then added a mixture of deionized water/ammonia water, and shaked the reaction in a water bath to obtain the reaction product II. The absolute ethanol is used to clean the reaction product II, then used deionized water to clean the reaction product II, and then used hydrochloric acid to clean the reaction product II, until Li+ is not detected by ICP-AES. The reaction product II is washed with deionized water, and finally vacuum dried to obtain Fe3O4-SiO2-IIP/RGO, which is a high anti-agglomeration RGO based magnetic lithium ion imprinted polymer.