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Description
Dual-site loaded cobalt-ferrite spinel nanostructures with chemical formula Co1-2xNixMnxFe2-yCeyO4, where 0 ≤ x = y ≤ 0.3, were successfully prepared via glycolthermal route. The final products of the appropriate sites loading are CoFe2O4 (dried naturally), CoFe2O4 (dried with Infrared lamp), Co0.8Ni0.1Mn0.1Fe1.9Ce0.1O4, Co0.6Ni0.2Mn0.2Fe1.8Ce0.2O4, and Co0.4Ni0.3Mn0.3Fe1.9Ce0.3O4. The structure, surface morphology, surface area, elemental composition and optical analysis were carried out by X-ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET), X-ray photoelectron spectroscopy (XPS), and UV–vis spectroscopy (UV). XRD results showed the cubic crystal structure and spinel formation of the samples; HRTEM confirms the crystallinity of the samples. SEM revealed the nano-spherical nature of the samples. BET results showed that the samples are mesoporous. The presence of the constituent elements of the Co1-2xNixMnxFe2-yCeyO4 spinel was verified by XPS. The band gaps of the samples estimated from the Tauc plot were found to be between 1.88 and 2.55 eV.
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