The mixed metal oxides, have been used in different environmental and chemical applications in view of their physical and chemical properties. In the field of electrochemistry, particularly electroanalysis, they are extensively used as functional materials due to their high surface area, mass transport, catalytic effect, and control over the local environment. [1] Mixed metal oxides providing a material with different physicochemical and morphological properties, such as, greater surface area, high dispersion, thermal stability, acid/base properties, making its application in various fields of chemistry, mainly as catalysts in various organic reactions. [2]

In this work, mixed metal oxides of CuO-Fe₂O₃ and CoFe₂O₄ ferrite were synthesized by sol–gel combustion route using glycerin as an adjuvant. [3-4] The mixed metal oxides CuO-Fe₂O₃ and CoFe₂O₄ ferrites structure was confirmed by means of X-ray powder diffraction. Scanning electron microscopy were used to investigate the morphology of the sample and the vibrations of the functional groups were determined by Raman and IR-ATR spectroscopy. [3-4]

The electrochemical behavior of mixed metal oxides CuO-Fe₂O₃ and CoFe₂O₄ ferrite were determined by cyclic voltammetry using an Ag/AgCl electrode, platinum wire and a glass carbon electrode (GCE), as reference electrode, counter electrode and working electrode, respectively. It was used a solution of KNO₃ (0,1 mol L^-1) as electrolytic medium. The GCE was modified with mixed metal oxides obtained to analyze their electrochemical behavior.

Bibliographic

1. Kefeni, K.K.; Msagati, T.A.; Mamba, B.B. 2017, Sci. Eng. B. 215, 37–55
2. Veisi, S.S.; Yousefi, M.; Amini, M.M.; Shakeri, A.R.; Bagherzadeh, M. 2019, Alloy. Compd. 773, 1187–1194
3. Basante-Delgado, S.F.; González-Vidal, D.; Morales-Morales, J.A.; Aperador-Chaparro, W.A.; Gómez-Cuaspud, J.A. 2020 Phys. Conf. Ser. 1541, 012013
4. Granja-Banguera CP, Silgado-Cortázar DG, Morales-Morales JA. 2022, Molecules. 2022, 27, 1550.