Elimination of direct red 264 using magnetic pure and Zn‐doped NiFe₂O₄ nanophotocatalysts under visible light irradiation: Isothermic and kinetic studies

Abstract

Photocatalytic degradation of direct red 264 under visible light using NiFe2O4 and Zn‐doped NiFe2O4 nanoparticles was the primary goal of this work. Hence, NiFe2O4 and Zn‐doped NiFe2O4 nanoparticles were prepared by the sol–gel auto combustion method. The powder X‐ray diffraction pattern unveiled the formation of spinel phase of NiFe2O4 with the average crystallite size determined from the Scherrer equation. The FTIR spectra of the samples revealed the vibration bands of Fe–O and Ni–O. The morphology and size of the synthesized nanoparticles have been observed by scanning electron microscopy. The band gap calculated using Kubelka–Munk function from the UV–visible diffuse reflectance spectra. Finally, removal of azo dye and corresponding kinetic and isothermic studies was examined. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13097, 2019

Photocatalytic treatment of Crystal Violet in aqueous solution: Box–Behnken optimization and degradation mechanism

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Interface Structure and Band Alignment of CZTS/CdS Heterojunction: An Experimental and First-Principles DFT Investigation

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