▎ 摘　　要

NOVELTY - Preparing reduction-oxidation graphene/nano magnetic ferroferric oxide composite adsorbent involves preparing the reactant system and mixing uniformly to obtain the reactant mixture solution, where the reactant system comprises water/glycol binary solvent, graphene oxide, ferric chloride hexahydrate, sodium citrate and sodium acetate. The volume ratio of water and glycol is 1/5, the adding ratio of graphene oxide and water/ethylene glycol solvent is 3 milligram/mL. The ferric chloride hexahydrate is 2-5 times of mass of graphene oxide. USE - Method for preparing reduction-oxidation graphene/nano magnetic ferroferric oxide composite adsorbent (claimed). ADVANTAGE - The method enables to prepare reduction-oxidation graphene/nano magnetic ferroferric oxide composite adsorbent which improves the traditional solvent thermal method by using water and glycol binary solvent thermal method. DETAILED DESCRIPTION - Preparing reduction-oxidation graphene/nano magnetic ferroferric oxide composite adsorbent involves preparing the reactant system and mixing uniformly to obtain the reactant mixture solution, where the reactant system comprises water/glycol binary solvent, graphene oxide, ferric chloride hexahydrate, sodium citrate and sodium acetate. The volume ratio of water and glycol is 1/5, the adding ratio of graphene oxide and water/ethylene glycol solvent is 3 milligram/mL. The ferric chloride hexahydrate is 2-5 times of mass of graphene oxide, and the mass ratio of ferric chloride hexahydrate, sodium citrate, sodium acetate is 1/0.4/3. The reaction mixed solution is added to the reaction kettle, water/glycol is added and co-heated for preparing composite magnetic adsorbent. The composite magnetic adsorbent is taken out from the reaction kettle, added into muffle furnace and heated at 180-200 degrees C for 8-12 hours. The reaction product is fully washed and vacuum dried to obtain the reduction-oxidation graphene/nano ferroferric oxide composite magnetic adsorbent after magnetic separation.