Impact of varying the core–shell structural sequence on the efficiency of cascade reagent-free Fenton-like oxidation: the case of magnetically recycling resorcinol–formaldehyde resins/magnetite composite microspheres

Fe 3 O 4 @RF exhibits superior efficiency to RF@Fe 3 O 4 in photo-assisted cascade Fenton-like oxidation, indicating a key impact of varying the core–shell structural sequence on the intrinsic reactivity of ROS-generating composite catalysts.