Structural, BET, ESR, magnetic, electrochemical and cytotoxicity study of CeO2/NiFe2O4 nanocomposites

Abstract

The synthesized CeO2/NiFe2O4 nanocomposites through an auto-combustion technique, followed by a comprehensive exploration of their electrochemical characteristics and cytotoxicity. A thorough set of characterizations, including X-ray diffraction (XRD), Field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) analysis, vibrating sample magnetometry (VSM), and electron spin resonance (ESR), were performed to evaluate the effect of calcination temperature (CT). The material employed in this work, which demonstrates excellent qualities in terms of specific capacitance and current density, was utilized as an electrode material for a supercapacitor. Through experimental analysis, it was discovered that the CeO2/NiFe2O4 (at 600 °C) nanocomposite specific capacitance was 106 Fg−1 at 0.5 A/g (current density). These findings unmistakably demonstrate that CeO2/NiFe2O4 nanocomposite electrodes perform at 600 °C admirably in supercapacitor applications. The prepared CeO2/NiFe2O4 nanocomposites showed remarkable biocompatibility behavior, according to the cytotoxicity investigation. These studies deepen our knowledge of the characteristics and potential uses of these nanocomposites.