LAUSR

Considering its potential photoactivity, zinc ferrite has been extensively used as a photocatalytic material. In the present investigation, zinc ferrite powder synthesized using mechanical alloying of hematite and zinc oxide powder at molar ratio of 1:1 was sintered and crushed for deposition by flame spraying on 316 stainless-steel plate. Surface characteristics, microstructure, and phase composition of the flame-sprayed zinc ferrite film were evaluated by Fourier-transform infrared spectroscopy, scanning electron microscopy, and x-ray diffraction analysis, respectively, while aqueous methylene blue solutions were employed to study the photocatalytic activity of the coating. It was concluded that zinc ferrite coating deposited by flame spraying not only possesses high photoabsorption ability, but can also exhibit sufficient photoactivity under visible-light irradiation.