This study aims to synthesize a nanomagnetic composite of NiFe2O4-SiO2-ZnO and to characterize it using VSM, XRD, SEM-EDS and DRS as well as to evaluate the degradation ability of NiFe2O4-SiO2-ZnO composites against Congo red dye in various pH, dye concentration, and contact time through degradation percent value. XRD characterization results showed the highest intensity at 2θ angle of 36,24o …