Résumé

The purpose of this work was to investigate the photocatalytic activity of CuFe2O4/α Fe2O3 heterojunction toward Methyl green (MG) under sun light irradiation. Structural and textural properties were characterized using
X ray diffraction (XRD), Fourier Transform infrared (FTIR) spectroscopy, Scanning electronic microscopy (SEM) and Brunauer, Emmet and Teller (BET) methods. UV–vis diffuse reflectance was used to evaluate the optical band
gap energy (Eg = 1.83 eV) which confirmed the semiconductor character of the prepared material. To construct the energy band diagram, conducting and valence bands positions were determined using the predicted flat band
potential (Vfb) of CuFe2O4 (0.51 V/SCE) and α-Fe2O3 (- 0.18 V/SCE) from Mott-Schottky plots. The adsorption study of Methyl green was carried out using kinetic models and adsorption isotherms. The kinetic data were well
fitted by pseudo-second order model and Langmuir isotherm was used as the best model to describe the adsorption of MG dye. The photocatalytic activity of the catalyst under solar light irradiation was followed by
UV–vis spectroscopy. The photodegradation results showed the efficient of the CuFe2O4/α Fe2O3 heterojunction toward Methyl green with a yield of 91 % within 120 min

Information

Item Type:	Journal
Divisions:
ePrint ID:	3845
Date Deposited:	2023-05-03
Further Information:	Google Scholar
URI:	https://www.univ-soukahras.dz/fr/publication/article/3845

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