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چکیده
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Spinel oxides (AB2O4) have garnered a long-standing reputation due to their intriguing electronic and magnetic properties, making them highly suitable for a wide range of industrial applications. These applications span from magnetic cores and high-frequency devices to medical diagnostics and environmental monitoring [1]. Cobalt ferrite and zinc ferrite, two specific ferrite spinels belonging to the AFe2O4 family, have emerged as subjects of significant interest in the scientific community. These materials exhibit exceptional properties and find numerous applications in fields such as photocatalysis, information storage, electronic devices, magnetic materials, and gas sensing. The remarkable potential and versatility of cobalt ferrite and zinc ferrite contribute to their widespread popularity and ongoing exploration in different industrial sectors [2,3]. In this study, we focus on the synthesis of zinc-cobalt ferrite magnetic nanoparticles using a sol-gel technique with natural gel as the precursor. The synthesized nanoparticles were thoroughly characterized using various analytical techniques, including Fourier transform infrared spectroscopy (FTIR), Brunauer-Emmett-Teller (BET) analysis, X-ray powder diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and vibrating sample magnetometer (VSM). Furthermore, we evaluated the photocatalytic activity of the nanoparticles for the degradation of congo red dye under visible light irradiation. The efficiency of the photocatalytic process was investigated by varying the initial dye concentration, photocatalyst dosage, and irradiation time. The results demonstrated the remarkable ability of zinc- cobalt ferrite magnetic nanoparticles to effectively degrade congo red dye. This method offers various advantages, including cost-effectiveness, simplicity, shorter processing time, environmental friendliness, and the potential for scalable production
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