Tunable Cu₂O Nanocrystals Fabricated by Free Dealloying of Amorphous Ribbons

Figure 4

Morphology evolution of Cu₂O octahedron. (a) Octahedra, dealloyed in 0.05 mol/L HCl solutions for 14 h and (b) hexapods, dealloyed in 0.05 mol/L HCl solutions for 20 h. (c) and (d) dealloyed in 0.05 mol/L HCl solutions for 24 h: (c) dendrite and (d) octahedron-detached hexapods.

(a)

(b)

(c)

(d)