• 专利标题:   Preparing graphene oxide/silica composite filter membrane with ultra-high water flux with selective permeability, comprises e.g. mixing water and absolute ethanol, adding graphene oxide and buffer, adjusting pH, performing ultrasonic treatment, and hydrolyzing.
  • 专利号:   CN115178101-A
  • 发明人:   WANG C, CHEN P, TANG J, FU H, QIAN W
  • 专利权人:   UNIV WUHAN TECHNOLOGY
  • 国际专利分类:   B01D067/00, B01D069/02, B01D069/10, B01D069/12, B01D071/02
  • 专利详细信息:   CN115178101-A 14 Oct 2022 B01D-067/00 202290 Chinese
  • 申请详细信息:   CN115178101-A CN10364163 04 Apr 2021
  • 优先权号:   CN10364163

▎ 摘  要

NOVELTY - Preparing a graphene oxide/silica composite filter membrane with ultra-high water flux with selective permeability, comprises providing water and absolute ethanol, and mixing to obtain a mixed solvent of water and ethanol, adding graphene oxide to the mixed solvent and stir to obtain a suspension, adding buffer to the suspension, stirring, and adjusting the pH of the suspension, adding silane into the suspension, adjusting the pH, and performing ultrasonic treatment, stirring and mixing, hydrolyzing the silane to obtain a graphene oxide/silica composite solution, providing a substrate, and preparing a graphene oxide/silica composite filter membrane with selective permeability and ultra-high water flux on the substrate by using the graphene oxide/silica composite solution. USE - The method for preparing graphene oxide/silica composite filter membrane with ultra-high water flux with selective permeability. ADVANTAGE - The method enables to prepare graphene oxide/silica composite filter film with selective permeability of ultra-high water flux by in-situ hydrolysis of graphene oxide surface large amount of silane, which realizes the full coverage of the silica nano-particles of graphene oxide surface, and increases the aperture in the filter membrane, which can obviously improve the water flux of filter membrane and improves the filtering efficiency. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for membrane with selective permeability of ultra-high water flux, obtained by the method as mentioned above.