Figure 4

The (a,b) Nyquist plots, (c,d) bode plots, and phase angle plots for st-37 with different concentrations of Dracocephalum based on bulk, and nano size, in 1.0 M HCl.

The (a,b) Nyquist plots, (c,d) bode plots, and phase angle plots for st-37 with different concentrations of Dracocephalum based on bulk, and nano size, in 1.0 M HCl.