Synthesis of titanium nanoplate decorated by Pd and Fe3O4 nanoparticles immobilized on graphene oxide as a novel photocatalyst for degradation of parathion pesticide

Abstract In this research, the photocatalytic degradation of the pesticide pollutant was investigated using titanium nanoplates decorated by Pd and Fe3O4 nanoparticles immobilization on graphene oxide nanosheets (TNP-Pd-Fe3O4/GO). This nanocatalyst was characterized by XRD, FESEM-EDS-Mapping techniques. As-synthesized TNP-Pd-Fe3O4/GO was tested for photocatalytic activity by the degradation of the pesticide pollutant, parathion under visible light irradiation. The effect of catalyst amount, initial parathion concentration and pH were studied on photocatalytic degradation of parathion by the design of the experimental method in presence of TNP-Pd-Fe3O4/GO nanocomposite. The central composite design modeling, based on response surface methodology, was used for this object. In addition, the kinetics of parathion degradation was studied by the Langmuir- Hinshelwood equation.