Figure 7.
(a) Photodegradation kinetic plot of RhB as a function of the illumination time over P-TiO2 and RP-TiO2-12 h nanohybrid photocatalyst, (b) proposed schematic diagram of the photoexcited electrons-holes generation, separation, and their transport process over the RP-TiO2-12 h photocatalyst interface under visible light illumination, and (c) Nyquist plots.