система Фентона

The influence of the structure of the SiO₂ layer on the adsorption properties of magnetosensitive CoFe₂O₄/SiO₂/CuO nanocomposites created as catalysts for the Fenton system was studied. For this, the formation of the SiO₂ layer was carried out by the sol-gel method using surfactants of synthetic and natural origin. To determine the process parameters, a previously proposed mathematical model of the dye adsorption process from an aqueous solution was used.

Nanostructured “shell-shell” type catalysts, which consist of a magnetically sensitive core of cobalt ferrite and a protective layer of porous SiO₂, have been synthesized. On the surface of porous SiO₂ clusters of copper oxide are situated playing the role of catalytic centers. The structure of CoFe₂O₄ / SiO₂ / CuO catalyst was confirmed by thermogravimetric analysis (TGA), X-ray diffraction (XRD) and scanning electron microscopy (SEM).