Optimization of Facile Synthesized ZnO/CuO Nanophotocatalyst for Organic Dye Degradation by Visible Light Irradiation Using Response Surface Methodology

In this study, we aimed to observe how different operating parameters influenced the photocatalytic degradation of rhodamine B (RhB, cationic dye) and bromophenol Blue (BPB, anionic over ZnO/CuO under visible light irradiation. This further corroborated optimization study employing response surface methodology (RSM) based on central composite design (CCD). The synthesis nanocomposite was carried out using co-precipitation method. synthesized samples were characterized via XRD, FT-IR, FE-SEM, Raman, BET techniques. characterization revealed that nanostructured formulation showed highest area (83.13 m2·g?1). Its much higher than pure ZnO CuO, thereby inheriting activity. To substantiate action, investigative analysis at room temperature, associating first-order kinetics a rate constant 0.0464 min?1 for BPB 0.07091 RhB. We examined assessed binary interactions catalyst dosage, concentration dye, irradiation time. suggested equation, with high regression R2 value 0.99701 0.9977 RhB, accurately matched experimental results. Through ANOVA found most relevant individual parameter time, followed by dose dye concentration. validation experiment, RSM CCD be suitable RhB photocatalysts, 98% efficiency.