Figure 3

FESEM images at different magnifications of: (a,b) Inset CuO_MIE, (c,d) Inset CuO–ZnO_MIE_1 and (e,f) Inset CuO–ZnO_MIE_2.

FESEM images at different magnifications of: (a,b) Inset CuO_MIE, (c,d) Inset CuO–ZnO_MIE_1 and (e,f) Inset CuO–ZnO_MIE_2.