The nickel–copper mixed ferrite nanoparticles [Cu1−xNixFe2O4 (x = 0, 0.5, 1)] NPs were prepared a by combustion method using Aloe barbadensis extract as a green reducing agent. The structural, functional, morphological, optical, magnetic, electrochemical properties of the sample were investigated using x-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, energy-dispersive x-ray spectroscopy, ultraviolet–visible (UV–Vis) spectrophotometry, photoluminescence, vibrating sample and cyclic voltammetry. The XRD patterns showed that all compositions with a cubic spinel structure and a crystallite size of 52 nm were reduced to 29 nm after nickel addition in copper ferrite and 35.85 nm for nickel ferrite. The UV–Vis absorption spectrum shows that the nickel-substituted copper ferrite band energy (Eg) increases as the crystallite size decreases. Measurements of magnetization obtained at room temperature revealed a soft ferromagnetic behaviour and saturation magnetization, coercivity value increased with the substitution of nickel. The maximum specific capacitance of 114 F g−1 was obtained at the scan rate of 5 mV s−1 for copper–nickel mixed ferrite NPs. A study of antibacterial activity against Escherichia coli, Klebsilla pneumonia, Staphylococcus aureus, and Bacillus subtilis using a well-diffusion method was performed. Nickel substitution on the copper spinel ferrite NPs revealed a major influence on structural, optical, magnetic, electrochemical and magnetic properties of the product obtained.
Sol–gel Aloe veraelectrochemical magnetic properties
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The authors are grateful for the financial support given by the Management of Mepco Schlenk Engineering
College. The authors are also thankful to Thiru. A. Tenzing, Correspondent; Dr. S. Arivazhagan, Principal; and Dr. A. Marikani, Senior
Professor and Head, Department of Physics, Mepco Schlenk Engineering College, Sivakasi, for their constant support and encouragement.
Conflict of interest
There is no conflict of interest in the submission.
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