Fig. 13

The detailed mechanism of FeCu nanoalloy Formation: (a) gradual addition of NaBH₄ to the alkaline solution containing CuSO₄ and FeSO₄, (b) reduction of Cu(II) precursor, (c) reduction of Fe(II) and the generation of Fe(0) atoms, and (d) core-shell structure formation of FeCu through the crystal growth process, completing the nanoalloy formation.