▎ 摘　　要

The water-dispersible ZnO/COFe2O4/graphene (ZnO/COFe2O4/GN-SO3H) nanocomposites were synthesized and applied as efficient photocatalyst for the organic dye degradation. The results indicate that the nanocomposites exhibited good water-dispersibility, convenient magnetic separation and high photocatalytic activity. Moreover, the novel photocatalysts could be repeatedly recycled for 15 consecutive trials without noticeable decrease in its effectiveness and have a great potential application in water treatment.