629802.fig.004a
(a)
629802.fig.004b
(b)
629802.fig.004c
(c)
629802.fig.004d
(d)
629802.fig.004e
(e)
629802.fig.004f
(f)
Figure 4: Electrochemical tests plots in the pH 3 solution, (a) at room temperature for 48 hours, (b) at room temperature for 48 hours, (c) at 70°C for 48 hours, (d) at 70°C for 48 hours, (e) EIS Nyquist plot at room temperature and 70°C, and (f) polarization curves at room temperature and 70°C.