Table 4.

Photocatalysis performances of some nanocatalysts.

Sample	MB Photodegradation Efficiency (%)	Time (min.)	Rate Constant, k (min−1)	Reference
Fe3O4	89	140	k0 = 0.0085	[81]
Fe3O4-SiO2	97	140	k0 = 0.102	[81]
Fe3O4@Ag@TiO2	79.9	120	k1 = 0.0120	[80]
Fe3O4@ZnO	88.5	120		[63]
Fe3O4@SiO2@ZnO cubes	55	90	k1 = 0.0074	[82]
Ag-Ag2O-ZnO (VIS light)	97.3	60	k1 = 0.057	[83]
Ag-Fe3O4@SiO2/ZnO	90.47	120	k2 = 0.07112	This work