Removal enhancement of dielectric barrier discharge reactor using heterogeneous gC3N4 catalyst modified by doping with oxygen and CuO

Abstract

In this study, the hybrid process of the heterogeneous catalyst of CuO/O-gC3N4/dielectric barrier discharge is utilized to destruct aqueous dye solution. To recognize the property of the synthesized catalyst, a range of optical, morphological, electrochemical, and textural experiments were conducted. The experimental lab phase is comparatively completed between sole dielecteric barrier discharge reactor and combined with catalyst process for tartrazine aqueous dye removal. The variations of initial pH, pollutant concentration, catalyst concentration and flow regime were investigated. The research findings represent the best result for both processes obtained at a pH = 3, catalyst dosage of 800 mg/L, intensity power of 13.5 kV, and initial dye concentration of 10 mg/L. The addition of nanocomposite into the dielectric barrier discharge reactor strengthens the charge flux and increase radical generation within plasma medium for the degradation improvement. The radical scavenger investigation of process mechanism introduces OH as the key degradation radical for the dielectric barrier discharge reactor alone and combined with catalyst that are effectively involved through the entire processes, respectively.