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Abstract
This chapter reports on magnetically separable Ni0.25Cu0.55Zn0.20Fe2O4 ferrite as a photocatalyst synthesized via a simple molten salt method. It also characterizes the as-synthesized Ni0.25Cu0.55Zn0.20Fe2O4 nanostructures by various physicochemical characterization techniques including XRD, FESEM, EDX, SQUID, and FTIR. The phase identification and impurity investigation were confirmed by XRD and FTIR. The morphological analysis demonstrated irregularly shaped counter-like nanostructures. The as-synthesized nanostructures size ranged from 25 to 145nm. Further, photocatalytic activities of Ni0.25Cu0.55Zn0.20Fe2O4 nanostructures for 4-nitrophenol reduction and MB dye degradation were investigated under sunlight irradiation. The magnetically separable Ni0.25Cu0.55Zn0.20Fe2O4 ferrite exhibited enhanced photocatalytic performance with degradation efficiency up to 95% within 50min for methylene blue (MB) dye. The results revealed that the as-synthesized Ni0.25Cu0.55Zn0.20Fe2O4 nanostructures extended their photocatalytic activity for reduction of 4-nitrophenol. The heightened photocatalytic activity is due to Ni0.25Cu0.55Zn0.20Fe2O4 ferrite morphology and crystallinity. The stable efficiency of Ni0.25Cu0.55Zn0.20Fe2O4 has been observed for six cycles, clearly showing stability.
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