Synthesis and characterization of iron-based spinel nanoparticles with different coatings and their ability in photocatalytic degradation of methylene blue

Abstract

In this research, nanoparticles of NiFe2O4, Zn0.5Ni0.5Fe2O4, TiO2-Zn0.5Ni0.5Fe2O4 and TiO2-Zn0.5Ni0.5Fe2O4-rGO were synthesized respectively by combustion sol-gel method, co-precipitation and two nanocomposite samples by physical mixing method. For the characterization of nanoparticles from Fourier transform infrared (FT-IR) analysis, X-ray diffraction pattern (XRD), Scanning electron microscopy (SEM), vibrating sample magnetometer (VSM), Diffuse Reflectance Spectroscopy (DRS) and porosimetry measurements. Adsorption and desorption have been used with BET. The results show that the synthesized particles are nanoscale ,and the absorption process takes place inside the holes. Also, the advanced oxidation process (AOP) was evaluated using photocatalyst for nanoparticles and the best performance was TiO2-Zn0.5Ni0.5Fe2O4-rGO nanocomposite with saturation magnetism (emu/g) of 65.88 with It showed a destruction of 95%.

Keywords

• nano composite
• combustion sol-gel
• co-precipitation
• advanced oxidation process
• photocatalyst