937265.fig.005a
(a)
937265.fig.005b
(b)
937265.fig.005c
(c)
Figure 5: (a) CVs of Cyt c/ZnO NPs/CPE electrode in PBS at various scan rates, from inner to outer; 50, 100, 200, 300,400, 500, and 600 mV s−1, the relationship between the peak currents (ipa, ipc) versus (b) the sweep rates and (c) the square root of sweep rates.