Fe3O4@Nico-Ag magnetically recyclable nanocatalyst for azo dyes reduction

- Fe3O4@Nico@Ag magnetic recyclable nanocatalyst (MRC) is more effective for the reduction of azo dyes consisting of MB and MO.
- It could be reused several times without significant loss in catalytic activity.
- Fe3O4@Nico@Ag (MRCs) has been successively used for colour reduction of MO, MB, EY, RhB and their mixtures.