Synthesis of Binary Bi₂S₃/ZnO Nanorod Array Heterostructure and Their Photoelectrochemical Performance

Figure 4

FE-SEM images of bare ZnO NRAs (a) at lower and higher magnification and ZnO nanorods decorated with Bi₂S₃ nanoparticles at lower and higher magnification, for (b) 3 cycles, (c) 7 cycles, and (d) 11 cycles. Cross-sectionals of the samples (a, c) are shown in the insets of the figures.

(a)

(b)

(c)

(d)