Abstract

In this research, the existence of Ce-ZnO and g-C3N4 was confirmed by XRD, FTIR, SEM, and TEM tests, and EDAX analysis approved the synthesized nanocomposite components as well. Also, BET analysis specified the g-C3N4/Ce-ZnO surface area = 181.08 m2/g and pore size = 35.858 nm, and the bandgap = 2.59 eV was determined by DRS test. The central composite design method optimized the components of nanoparticles, Zinc Nitrate = 280.2 mg, Cerium Nitrate = 17.5 mg, and g-C3N4 = 232.4 mg. The wastewater COD decreased 88 %, and 52 % under sunlight simulated irradiation and direct sunlight irradiation, respectively, by g-C3N4/Ce-ZnO at optimum conditions.

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