g-C3N4/TiO2 S-scheme heterojunction photocatalyst with enhanced photocatalytic Carbamazepine degradation and mineralization

In the present work, UVA light-driven g-C3N4/TiO2 photocatalyst was synthesized for photodegradation of Carbamazepine (CBZ) in aqueous medium. The morphological, optical properties and structure TiO2, g-C3N4 prepared composites were analyzed using X-ray diffraction (XRD), Nitrogen adsorption–desorption isotherm based on BET, Raman Spectroscopy, Scanning Electron Microscopy (SEM) with EDX, UV–vis Diffuse Reflectance Spectroscopy (UV–vis DRS). Optical absorption studies revealed a 2.97 2.78 eV band gap developed 10%g-C3N4/TiO2 (A10) 30%g-C3N4/TiO2 (A30), respectively. N2 showed an 80.64 59.67 m2/g specific surface area A10 A30, Photodegradation show that composite photo-catalyst can eliminate 71.41% CBZ 30.38 % mineralization yield within 360 min irradiation at optimum conditions (10 ppm initial concentration 0.1 g loading). kinetic results removal this pollutant nearly followed First-order model regression coefficient (R2) values more than 0.98 high reaction rate constant recorded 0.0034 min?1 A10.