One-Pot Synthesis of Cu₂O/Cu Self-Assembled Hollow Nanospheres with Enhanced Photocatalytic Performance

Figure 2

The effect of reaction time on the formation of Cu₂O/Cu hollow nanospheres: (a) 2 h; (b) 4 h; (c) 10 h; and (d) 20 h.

(a)

(b)

(c)

(d)