Dye pollution removal in aqueous solution using novel photochemically synthesized CoZnFe2O5 nanocomposite

Dyes pollution is a major problem in the water, especially since the main factor is textile factories. The treatments for this problem through nanomaterials have taken a broad scope and many studies. In this study, trinary novel metal oxide [CoZnFe2O5] nanocomposite is successfully synthesized by UV irradiation presses with a maximum wavelength of 365 nm. The nanocomposite was investigated by scanning and transmission electron microscopy measurements, and their crystal structure is obtained by the X-ray diffraction technique. The sample’s percentage of elements was determined by energy-dispersive X-ray spectroscopy and X-ray mapping. The energy gap is equal to 2.48 eV calculated by photoluminescence spectroscopy. Incorporating CoZnFe2O5 nanoparticles enhanced the uptake of Direct blue. The faster Direct blue adsorption onto CoZnFe2O5 nanocomposite at a contact time of 60 min. Two adsorption isotherms were used in this study: Freundlich and Langmuir, and this adsorption were fitted with The Freundlich (R2 > 0.95) model with the highest adsorption efficiency 75%. The pseudo-second-order (R2 > 0.95) model was most appropriate in the description of the adsorption process. In addition, a thermodynamic study was performed to calculate the ΔG, ΔH, and ΔS parameters of –144 kJ/mol, 8.2 J/mol K, and 28 J/mol. Finally, the novel synthesized nanocomposite is a good adsorbate surface for Direct blue dyes.