194183.fig.004
Figure 4: Cyclic voltammetric curves of nano-CuO/GCE in 0.01 M NaOH + 0.09 M KCl solution containing 0.1 mM H2O2 at different scan rates. Scan rates: 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.10, 0.12, 0.14, 0.16, and 0.18, Vs−1, respectively.