Biosynthesis of the Fe3O4 Nanoparticles Using Acacia Nilotica Leaf Extract and their Effect on Degradation of Congo Red Dye in Aqueous Solution

Abstract

Iron oxide magnetic nanoparticles (Fe3O4 MNPs) were synthesized using Acacia nilotica leaf extracts as reducing and capping agent. Their morphology, structure and size were confirmed by UV-visible (UV-vis), Fourier Transform Infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscope (TEM) and vibrating magnetometer sample (VSM). The synthesized Fe3O4 MNPs results in mostly spherical particles with diameters ranging from 16 to 20nm. The catalytic properties of Fe3O4 MNPs for degradation of Congo red (CR) dye in aqueous solution have been studied by UV-vis spectroscopy. The results show that the synthesized high surface area Fe3O4 MNPs has an excellent adsorption performance.