Magnetic CuO@Fe3O4 nanocomposite as a highly active heterogeneous catalyst of persulfate for 2,4-dichlorophenol degradation in aqueous solution

Fe3O4@CuO nanocomposite was fabricated through a novel impregnation method. Both sulfate radicals and hydroxyl radicals can be produced effectively in the activated persulfate system by the composite to degrade the 2,4-dichlorophenol.