Figure 6

(a) Differences of removal percentage with contact time as a function at various initial CR concentrations (5, 10, and 15 mg/l) at pH 7 and 10.0 mg rGO-P nanocomposite. (b) Effect of the photocatalyst amount (in mg) on the removal efficiency of CR (50 ml CR solution, 10 mg/l at T = 25 °C and pH 7).