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Nanostructured Magnetically Sensitive Catalysts for the Fenton System: Obtaining, Research, Application

Olena Makido1, Galyna Khovanets’1, Viktoria Kochubei2, Iryna Yevchuk1
1 Department of Physical Chemistry of Fossil Fuels L.M. Lytvynenko Institute of Physico-organic Chemistry and Coal Chemistry NAS of Ukraine 3а Naukova St., Lviv 79060, Ukraine; 2 Lviv Polytechnic National University, 12 S. Bandera St., Lviv 79013, Ukraine;
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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). Studies of the catalytic activity of the obtained catalysts were performed in the Fenton system on a model solution of methylene blue (MB). The catalytic activity of the composite in MB destruction reaches 99%. The high magnetic sensitivity of the obtained catalysts ensures their easy removal from the reaction medium. The catalysts demonstrated the possibility of reusability without loss of activity.

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