Synthèse Verte Et Caractérisation Des Nanoparticules Hybrides À Base De Fe2o3 -cuo Et Leur Application En Photocatalyse (élimination De Bleu De Méthylène)

Résumé: Due to the physical, biological and chemical properties of nanoparticles (NPS). this last decade is characterized by an increase in their production and their use in industry and research. The essential objective of our work consisted in biosynthesizing stable iron and copper oxide nanoparticles (Fe2O3-CuONPs), under appropriate experimental conditions for applications in photocatalysis. The strategy adopted is based on the use of the biological process based on the extract of the plant (Mentha pulegium) as a method of green synthesis. The nanoparticles obtained were characterized by UV-Vis, FT-IR and XRD techniques. UV-Vis spectra showed maximum absorption in the range of 190-300 nm. Fourier transform infrared (FTIR) spectroscopy has been used to confirm the existence of various functional groups responsible for reduction and stabilization during the process of biosynthesis. The result of the spectra shows a weak peak at 457cm¹ attributed to the vibration of the (Fe2O3-CuO) Nps, confirming the formation of nanoparticles. X-ray diffraction (XRD) analysis confirmed the crystalline nature of the (Fe2O3-CuO) Nps with an average size between 22.93 and 30.00 nm. We were also able to show that it is possible to apply nanoparticles formed in the degradation of organic pollutants (methylene blue) where the (Fe2O3- CuO) Nps, with a concentration of 0.8 g showed more photocatalytic activity high

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