▎ 摘　　要

NOVELTY - Preparing composite aerogel functional material based on ferroferric oxide nanowire/graphene oxide interpenetrating structure involves mixing large-diameter graphene oxide suspension and amphiphilic nonionic surfactant aqueous solution uniformly under high-frequency intermittent ice bath ultrasound to obtain large-diameter graphene oxide pretreatment liquid. The size of large-diameter graphene oxide is 30-50 micrometer. The mass ratio of large-diameter graphene oxide to amphiphilic nonionic surfactant is 1:1-4. The weak acid and weak base organic iron salt and monodentate thiosulfate complex are added to the large-diameter graphene oxide pretreatment solution obtained. The vacuum circulating ice bath is used to stir and mix well to obtain large-diameter graphene oxide reaction solution. USE - Method for preparing composite aerogel functional material based on ferroferric oxide nanowire/graphene oxide interpenetrating structure. ADVANTAGE - The method enables to prepare composite aerogel functional material based on ferroferric oxide nanowire/graphene oxide interpenetrating structure that has excellent absorbing performance, realizes the strong absorption of electromagnetic wave broadband, and solves the problems of electromagnetic pollution. DETAILED DESCRIPTION - Preparing composite aerogel functional material based on ferroferric oxide nanowire/graphene oxide interpenetrating structure involves mixing large-diameter graphene oxide suspension and amphiphilic nonionic surfactant aqueous solution uniformly under high-frequency intermittent ice bath ultrasound to obtain large-diameter graphene oxide pretreatment liquid. The size of large-diameter graphene oxide is 30-50 micrometer. The mass ratio of large-diameter graphene oxide to amphiphilic nonionic surfactant is 1:1-4. The weak acid and weak base organic iron salt and monodentate thiosulfate complex are added to the large-diameter graphene oxide pretreatment solution obtained. The vacuum circulating ice bath is used to stir and mix well to obtain large-diameter graphene oxide reaction solution. The mass ratio of weak acid and weak base organic iron salt and monodentate thiosulfate complex is 1:1-3. The multifunctional biomass reducing agent is added to the large-diameter graphene oxide reaction solution obtained. The alkaline solution is added with pH of 8-12. The precursor reaction solution is obtained by mixing thoroughly with high frequency ice bath stirring. The mass ratio of the large-diameter graphene oxide reaction solution to the multifunctional bio-based reducing agent is 1:0.5-2. The precursor reaction solution obtained is added into hydrothermal reaction kettle lined with polytetrafluoroethylene in one-pot method. The hydrothermal reaction is carried out in stepped heating mode to obtain composite hydrogel of ferroferric oxide rice noodle/graphene oxide interpenetrating structure. The composite hydrogel obtained is subjected to post-processing such as dialysis, intermittent cyclic gradient freezing technology, and vacuum-assisted freeze-drying to obtain final product.