Novel multifunctional NiFe2O4/ZnO hybrids for dye removal by adsorption, photocatalysis and magnetic separation

- The NiFe2O4 was decorated on ZnO surface by a hydrothermal method.
- NiFe2O4/ZnO hybrids show high adsorption capacity and excellent photostability.
- The main active species in dye decolorization by NiFe2O4/ZnO hybrids are OH and h+.
- NiFe2O4/ZnO hybrids can be easily separated by an external magnet.