Synthesis, characterization and morphology of new magnetic fluorochromate hybrid nanomaterials with triethylamine surface modified iron oxide nanoparticles

Magnetic fluorochromate Fe3O4@SiO2@TEA@[CrO3F] was synthesized by ethylene glycol route. The structures, morphologies and properties of the catalyst were characterized by using X-ray diffraction (XRD), Fourier transform infrared (FT-IR), elemental analysis, X-ray fluorescence (XRF), solid state UV–vis, transmission electron microscopy (TEM), scanning electron microscope (SEM), N2 adsorption–desorption (BET and BJH) and vibrating sample magnetometer (VSM). The quantity of chromium is approximately 0.32%, which confirms the immobilization amount of [CrO3F]− which is equal with 0.006 mol/100 g.