Substitution of Zn into the FeFe2O4 spinel structure was achieved via the co-precipitation method. The introduction of Zn cations into FeFe2O4 resulted in the formation of ZnxFe1-xFe2O4 (x: 0-1) with a random distribution, impacting the adsorption capability towards Direct Red 79 dye, particularly notable at x=0.4. The optimal nanomaterial sample exhibited a specific surface area of 161.5 m2/g, a pore volume of approximately 0.281 cm3/g, and a particle size of 10 nm, synthesized via sudden nucleation at high temperatures. XRD and Raman analyses confirmed the formation of a single crystalline phase. Notably, the highest efficiency of Direct Red 79 adsorption occurred at pH 3. The adsorption process adhered to the pseudo-second-order kinetic model and Langmuir isotherm, with a maximum adsorption capacity of 56.85 mg/g at 298K.