▎ 摘　　要

NOVELTY - Preparing heteropoly acid-graphene oxide composite catalytic material comprises (i) heating the ammonium heptamolybdate tetrahydrate aqueous solution to boiling, drop wisely adding an aqueous solution of iron (III) nitrate hexahydrate, then filtering while hot and cooling to room temperature, naturally precipitating the crystal to obtain a (FeIIIMo6)-Anderson type polyacid; (ii) ultrasonically dispersing the graphene oxide in ethanol, then adding ethylenediamine, heating the reaction and removing the solvent by vacuum drying; and (iii) soaking the functionalized graphene oxide prepared in the step (ii) in (FeIIIMo6)-Anderson type polyacid aqueous solution for 0.5-2 hours, heating under refluxing for 12-24 hours, filtering and drying under vacuum. USE - The material is useful for treating organic contaminants, preferably methylene blue in water body. ADVANTAGE - The material uses easily available raw materials, has high catalytic activity and recyclability. The method is simple. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for heteropoly acid-graphene oxide composite catalytic material is obtained by the method as mentioned above.