Adsorption of direct red 79 in wastewater on Fe2Fe1-xMnxO4 (x = 0 - 1) nanoparticles prepared by co-precipitation method

Magnetic spinel ferrite nanoparticles Fe2Fe1-xMnxO4 were synthesized by a simple co-precipitation method. The morphology and structures of the samples characterized X-ray diffraction (XRD), field-emission scanning electron microscope (FE-SEM), Raman spectroscopy, infrared spectroscopy (FTIR). magnetic properties materials studied using VMS measurement. results showed that formed single phase packed face-centered cubic structure. When replacing Mn2+ ions with Fe2+, crystal structure shifted from Fe3O4 to MnFe2O4 assigned an increased lattice constant 6.30 nm 26.33 nm. FTIR spectrum analysis when Mn-O Fe-O bonds changed significantly. Specifically, intensity spectrum's reflection absorption decreased gradually. All exhibited uniform spherical shapes, particle size varied 9.8 30 nm, depending strongly on substituted concentration. magnetization curves confirm soft ferromagnetic behavior close superparamagnetic nanoparticles. material used study adsorption Direct Red 79 (DR79) in water has good capacity. process obeys pseudo-second-order kinetics also shows compliance Langmuir, Freundlich Temkin isotherms.