• 专利标题:   Preparing polyvinylpyrrolidone polymerized stannic oxide-graphene aerogel useful in gas detection, by adding graphene oxide aqueous solution to alcohol and deionized water, dispersing, adding reducing agent and modifier, and freeze-drying.
  • 专利号:   CN110918007-A
  • 发明人:   SHEN X, YAN W, ZHU K, CUI S, PENG C
  • 专利权人:   JIANGSU EFFUL NEW MATERIAL IND TECHNOLOG
  • 国际专利分类:   B01J013/00, C01G019/02
  • 专利详细信息:   CN110918007-A 27 Mar 2020 B01J-013/00 202033 Pages: 10 Chinese
  • 申请详细信息:   CN110918007-A CN11064880 04 Nov 2019
  • 优先权号:   CN11064880

▎ 摘  要

NOVELTY - Method for preparing polyvinylpyrrolidone polymerized stannic oxide-graphene aerogel, involves (a) adding graphene oxide aqueous solution to a mixed solution of alcohol and deionized water, ultrasonically dispersing, sequentially adding tin source, reducing agent and modifier, uniformly stirring, adding polyvinylpyrrolidone and heating in stirring state to obtain a stannic oxide-graphene sol, (b) adding obtained stannic oxide-graphene sol to a hydrothermal reaction kettle, and reacting obtain stannic oxide-graphene hydrogel, and soaking the stannic oxide-graphene hydrogel in aging solution until a film is removed, and (c) freeze-drying the demolded stannic oxide-graphene hydrogel to obtain the stannic oxide-graphene hydrogel. USE - The method is used for preparing polyvinylpyrrolidone polymerized stannic oxide-graphene aerogel useful in gas detection (all claimed). ADVANTAGE - The aerogel ensures density of 0.12-0.23 g/cm3, hydrophobic angle of 108-127 degrees , gas response time for 61-127 seconds and response degree of 28-41%.