Abstract
Magnetite and copper spinel ferrites were prepared by co-precipitation method and characterized by X-ray powder diffraction, 57Fe Mössbauer spectroscopy and scanning electron microscopy. XRD data showed the formation of cubic structure with particle sizes ranging from 30 to 23 nm. According to 57Fe Mössbauer data the obtained magnetite as well as copper ferrites were partially oxidized. The occupancy of Cu2+ changes from tetrahedral to octahedral sites with the increase of copper content, as observed by the analysis of 57Fe hyperfine parameters and XAS data. Catalytic behavior of the obtained samples were investigated towards methylene blue dye degradation using photo-Fenton reactions.
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