Fig. 5

(a) Determination of the point of zero charge (PZC) of TiO2–clay nanocomposite using the pH drift method, (b) Evaluation of active species involved in BR46 degradation using radical scavenger experiments, Pseudo-first-order kinetic plots for BR46 photodegradation under variations of (c) initial concentration, (d) lamp position, (e) rotational speed, and (f) clay content.