Synthesis of g-C3N4 Derived from Different Precursors for Photodegradation of Sulfamethazine under Visible Light

In this study, a series of g-C3N4 nanosheets were prepared by various thermal oxidative etching times from four different precursors (urea, melamine, dicyandiamide and thiourea). The physicochemical properties these analyzed in detail using scanning electron microscopy (SEM), X-ray diffraction (XRD), photoluminescence emission spectra, Fourier transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET) analysis ultraviolet-visible diffuse reflectance. results revealed that the obtained thinner layer thickness larger specific surface area, with an extension time. Meanwhile, sulfamethazine (SMZ), one most widely used sulfonamides, was to evaluate photocatalyst activity study. Compared other nanosheets, urea-derived under 330 min showed highest photocatalytic for SMZ visible light. conclusion, our study provides detailed insights into synthesis characterization highlights importance time determining materials.