• 专利标题:   Preparing graphene oxide aerogel fiber fabric by dispersing graphene oxide, mixing, ultrasonically treating, injecting for coagulation, washing to obtain graphene oxide gel fiber, filtering to obtain gel fiber fabric and freeze drying.
  • 专利号:   CN111676591-A
  • 发明人:   HU X, ZHOU J, SHI K
  • 专利权人:   UNIV NANJING INFORMATION SCI TECHNOLOG
  • 国际专利分类:   B01D046/00, D01F009/14, D04H001/4242, D04H001/4382
  • 专利详细信息:   CN111676591-A 18 Sep 2020 D04H-001/4242 202081 Pages: 9 Chinese
  • 申请详细信息:   CN111676591-A CN10528201 11 Jun 2020
  • 优先权号:   CN10528201

▎ 摘  要

NOVELTY - Method for preparing a graphene oxide aerogel fiber fabric involves (i) dispersing graphene oxide into a solvent, shaking and uniformly mixing for 2-15 minutes and performing ultrasonic treatment for 4-30 minutes to obtain a graphene oxide solution with a concentration of 2-13 mg/ml, (ii) injecting the graphene oxide solution at a rate of 10-1000 mu l/minute into a rotary coagulation bath with a rotating speed of 5-50 rpm through a spinning head with a diameter of 50-500 mu m and obtaining graphene oxide gel fiber by washing with deionized water after solidifying for 1-900 seconds and (iii) obtaining a gel fiber fabric by suction filtration and freeze drying for 24-72 hours. USE - The method is useful for preparing a graphene oxide aerogel fiber fabric used in a preparation of a PM2.5 filter device (claimed) and in air filtration. ADVANTAGE - The method adopts environmentally-friendly preparation process, room temperature operation and low energy consumption and provides the product with a multi-stage pore structure formed by nano-level voids and micron-sized pores, high filtration efficiency and excellent PM2.5 capture performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the graphene oxide aerogel fiber fabric prepared by the method.