• 专利标题:   Preparing nano-silver amino-modified reduction graphene oxide frame material comprises e.g. dispersing the multilayer graphene oxide in potassium hydroxide solution, stirring, freezing and drying, calcining, washing, freezing and drying.
  • 专利号:   CN113060723-A, CN113060723-B
  • 发明人:   PAN H, CHANG D, DAI J, JIA D
  • 专利权人:   UNIV SHANGHAI MEDICINE HEALTH SCI
  • 国际专利分类:   B01J020/22, B82Y030/00, B82Y040/00, C01B032/184, C01B032/194, C01B032/198
  • 专利详细信息:   CN113060723-A 02 Jul 2021 C01B-032/194 202160 Pages: 7 Chinese
  • 申请详细信息:   CN113060723-A CN10290428 18 Mar 2021
  • 优先权号:   CN10290428

▎ 摘  要

NOVELTY - Preparing nano-silver amino-modified reduction graphene oxide frame material comprises (i) dispersing the multilayer graphene oxide in potassium hydroxide solution, stirring, allowing to stand for 10-12 hours, freezing and drying at -20 degrees C to -195.8 degrees C, calcining at 600-800 degrees C for 2 hours under the protection of argon gas, washing, freezing and drying to obtain the reducing graphene oxide frame material, (ii) adding the reducing graphene oxide frame material obtained in the step (i) into toluene, ultrasonically dispersing, adding 3- amino propyl triethoxy silane, stirring, centrifuging, washing by toluene, vacuum drying, preparing the aminated modified graphene oxide frame material, (iii) the aminated modified reducing graphene oxide frame material obtained in the step (ii), silver nitrate into deionized water, ultrasonically dispersing, adding sodium borohydride and stirring, centrifuging the precipitate with methanol and deionized water to wash and vacuum drying. USE - The method is useful for preparing nano-silver amino-modified reduction graphene oxide frame material. ADVANTAGE - The method: is economical. The prepared material has mesoporous passage, stable physical and chemical properties, frame material structure, and large specific surface area, strong loading capacity, good electrical conductivity and electrochemical catalytic ability. DETAILED DESCRIPTION - Preparing nano-silver amino-modified reduction graphene oxide frame material comprises (i) dispersing the multilayer graphene oxide in potassium hydroxide solution, stirring, allowing to stand for 10-12 hours, freezing and drying at -20 degrees C to -195.8 degrees C, calcining at 600-800 degrees C for 2 hours under the protection of argon gas, washing, freezing and drying at -20 degrees C to -195.8 degrees C to obtain the reducing graphene oxide frame material, where the mass mol ratio of the multilayer graphene oxide and potassium hydroxide is 5:1-12.5 1g/mol, (ii) adding the reducing graphene oxide frame material obtained in the step (i) into toluene, ultrasonically dispersing for 20-40 minutes, adding 3- amino propyl triethoxy silane, stirring for 12 hours, centrifuging, washing by toluene, vacuum drying at 60 degrees C, preparing the aminated modified graphene oxide frame material, (iii) the aminated modified reducing graphene oxide frame material obtained in the step (ii), silver nitrate into the deionized water, ultrasonically dispersing, adding sodium borohydride and stirring for 1 hours in the air at room temperature, centrifuging the precipitate with methanol and deionized water to wash and vacuum drying to obtain the nano-silver amino-modified reduction graphene oxide frame material, where the aminated modified reducing graphene oxide frame material, silver nitrate, and sodium borohydride in mass mol ratio of (2.5-7.5):1:1.5g/mol. An INDEPENDENT CLAIM is also included for nano-silver amino-modified reduction graphene oxide frame material prepared by above mentioned method.