Improving the Photo Electro Catalytic Degradation of Methylene Blue by Modified TiO₂/ITO Photo Anodes

Figure 7

Nyquist plots for (a) photoanode A and (b) photoanode AB at an amplitude of 10 mV at the open circuit potential within a frequency range between 10 Hz and 100 KHz with a decreasing scanning frequency order in the dark, then under illumination UVA. (c) A simplified equivalent circuit model.

(a)

(b)

(c)