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Synthesis and Characterization of N- Doped ZnO-γAl2O3 Nanoparticles for Photo-catalytic Application

  • M. Mansouri EMAIL logo , A. Hosseinvand , T. Kikhavani and N. Setareshenas
Published/Copyright: December 21, 2019

Abstract

In this study, photo-catalytic degradation of methyl orange (MO) azo dye was examined by undoped and Ce2O3/ CuO/ N doped ZnO nanoparticles stabilized on γAl2O3. Highest photo-catalytic activity was observed for the N-doped 10 wt. % ZnO-γAl2O3 sample. One of the optimal points with the complete MO decomposition was determined at an initial concentration of 8.25 ppm, pH 3.25, catalyst loading of 0.36 g/L and 12.56 W UV-light irradiation after 120 min. Physical and chemical properties of materials were investigated by X-ray diffraction analysis (XRD), Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) and UV–visible diffuse reflectance spectroscopy (DRS) method. The experimental data were best fitted by a Langmuir-Hinshelwood approach photo-catalysis developed kinetic reaction rate in the form of r=0.2797I0.5[Cat.]0.5[Dye] /1+0.1079[Dye]0+0.4086I0.5[Cat.]0.5.

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Received: 2019-06-12
Revised: 2019-08-08
Accepted: 2019-10-05
Published Online: 2019-12-21

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