Study of the Adsorption of Rose Bengal on a Hybrid Material based on Oxide and Photocatalytic Test

The present work presents the study of the photocatalytic activity of CuAl₂O₄ and CuAl₂O₄/K for the elimination of an acid dye chosen as a model; in this case the Rose Bengale (RB). All the nanoparticles prepared during this study were characterized by X-ray diffraction, infrared spectroscopy. The study of adsorption kinetics has shown that it is very fast from the start of the process (5 min) for kaolin and CuAl₂O₄, equilibrium is quickly reached for kaolin) with a retention rate of 40% for an adsorbed quantity of 8.02 mg/g. On the other hand, for the CuAl₂O₄ catalyst, the evolution continues to reach equilibrium at 120 min, with a retention rate of 80.44% and an adsorbed quantity equal to 16.087 mg/g. for CuAl₂O₄/K equilibrium is quickly reached with a retention rate of 3.05% for an adsorbed quantity of only 0.62 mg/g.