Figure 1

Schematic illustration for the preparation of Au@hmC-FeCo/GC, catalytic reduction of 4-nitroarene to 4-aminoarene by the Au@hmC-FeCo/GC, and separation of the Au@hmC-FeCo/GCs by using a magnet.

Schematic illustration for the preparation of Au@hmC-FeCo/GC, catalytic reduction of 4-nitroarene to 4-aminoarene by the Au@hmC-FeCo/GC, and separation of the Au@hmC-FeCo/GCs by using a magnet.