Preparation method and application of magnetic graphene-based composite aerogel

The invention discloses a preparation method and application of magnetic composite graphene-based aerogel, a reducing agent is added into a graphene oxide solution, sodium carboxymethyl cellulose and ferroferric oxide are heated and dissolved with water and added into the graphene oxide solution for mixing and ultrasonic dispersion to obtain a mixed solution, the mixed solution is subjected to a hydrothermal self-assembly reaction, and the magnetic composite graphene-based aerogel is obtained. The magnetic sodium carboxymethyl cellulose and graphene composite hydrogel is obtained, the composite aerogel is obtained through freeze-drying, the composite aerogel has the good adsorption effect on organic wastewater and heavy metal ions and the good recovery performance in sewage, and self-cleaning, convenience, pollutant separation and recyclability are achieved in the using process. 本发明公开一种磁性复合石墨烯基气凝胶的制备方法及应用，氧化石墨烯溶液中加入还原剂，将羧甲基纤维素钠、四氧化三铁用水加热溶解，并加入到氧化石墨烯溶液中混合，超声分散得到混合液，混合液进行水热自组装反应，得到磁性羧甲基纤维素钠石墨烯复合水凝胶，冻干得到复合气凝胶，复合