Dynamic Trio: CuWO4@C3N5/Polypyrrole Nanocomposites Combat Chlorpyrifos and Rhodamine B in Waste water

Abstract

In this study, we investigate the photocatalytic degradation of chlorpyrifos pesticide (CPy) and Rh B dye using nanoparticles of C3N5 and CuWO4 dispersed within a PPy matrix. Using a variety of techniques, a composite called PPy@C3N5/CuWO4 was synthesised and thoroughly characterised. These techniques included XRD, SEM/EDS, TEM, BET, DRS, PL, and TOC. The combination displayed remarkable photoactivity and photostability in the degradation of CPy and RhB in aqueous solutions when exposed to visible light. The band gap values of C3N5, CuWO4, and C3N5@CuWO4 are (2.2, 2.0, and 1.9 eV), improved. Several factors were meticulously optimised and adjusted in order to investigate the process of photocatalytic degradation. These factors included pH levels, initial solution concentration, irradiation time, and the amount of photocatalyst used. An optimal photodegradation efficiency of approximately 92.5% was attained by utilising a CPy and Rh B concentration of 5 mg/L, maintaining a pH of 3.5, and employing a photocatalyst dosage of 0.5 g/L. The photocatalyst was also tested for its ability to regenerate and be recycled four times, which showed that it was relatively stable.