Table 3.

The comparative study of Co₃O₄@mSiO₂/IL-Pd with former catalysts in the reduction of nitrobenzenes.

Entry	Catalyst	Conditions	Recovery times	References
1	MMT@Fe3O4@Cu	H2O, 60 °C	5	90
2	Pd NPs/C@ Fe3O4	H2O, EtOH, 70 °C	5	91
3	Fe3O4@SiO2/EP.EN.EG@Cu	H2O, 60 °C	4	92
4	Fe3O4‐Glu‐Ag	H2O, 60 °C	4	93
5	Fe3O4@C@Ag-Au	H2O, RT	5	94
6	Co3O4@mSiO2/IL-Pd	H2O, RT	7	This work

^a Isolated yields.