• 专利标题:   Preparing graphene air filter core in large quantity, comprises e.g. mixing graphite and potassium permanganate, adding concentrated sulfuric acid and concentrated phosphoric acid, and reacting under condition of vacuum heating distillation.
  • 专利号:   CN111591978-A
  • 发明人:   TANG B, LI T, MEI D, DENG M, LUO Z, QIAO G, ZHANG B, XU W, MU Z, LIN Y, DENG J, XIONG R, MENG L, YE C
  • 专利权人:   UNIV CHENGDU TECHNOLOGY, CHENGDU YIKE TECHNOLOGY CO LTD
  • 国际专利分类:   B01D046/00, C01B032/184, C01B032/198
  • 专利详细信息:   CN111591978-A 28 Aug 2020 C01B-032/184 202075 Pages: 7 Chinese
  • 申请详细信息:   CN111591978-A CN10474585 29 May 2020
  • 优先权号:   CN10474585

▎ 摘  要

NOVELTY - Preparing graphene air filter core in large quantity, comprises, (i) mixing graphite and potassium permanganate, then adding concentrated sulfuric acid and concentrated phosphoric acid, and reacting under heating condition of 60-90 degrees C for 5-8 hours, (ii) adding ice cubes into the mixed solution prepared in step (i), (iii) adding hydrogen peroxide solution into the reaction product prepared in step (ii), (iv) repeatedly centrifuging and rinsing the product prepared in step (iii) with water and ethanol for 3-5 times, (v) forcibly cooling the solution by using liquid nitrogen or solid carbon dioxide, and (vi) reacting the product prepared in step (v) under conditions of the vacuum heating distillation method to obtain final product. USE - The method is useful for preparing graphene air filter core. ADVANTAGE - The method: solves the problem of single source of related filter products while ensuring the quality of air filtration; has simple process, and low production cost; and is environmentally friendly.