RETRACTED ​ARTICLE: Synthesis of Magnetic Composites Based on Waste Low Density Polyethylene Wax and Iron Oxide Nanoparticles for Methyl Green Adsorption

Abstract

Magnetic nanoparticle composites were prepared from iron oxide (magnetite) (Fe3O4) and waste low density polyethylene wax (WLDPEW) via gamma irradiation technique using 60Co source, followed by anchoring Fe3O4 on the surface of WLDPEW samples to produce WLDPEW–Fe3O4 nanoparticle magnetic composite pellets. The outcome WLDPEW and WLDPEW–Fe3O4 nanoparticle magnetic composite pellets were characterized by Fourier transform infrared spectroscopy, X-ray diffraction (XRD), scanning electron microscope-energy dispersive X-ray spectrometry, high resolution transmission electron microscopy (HR-TEM) and electron spinning resonance (ESR). The results of HR-TEM and XRD showed that the presence of Fe3O4 nanoparticles. HR-TEM photomicrographs of the Fe3O4 into WLDPEW showed that the nanoparticles of Fe3O4 have the average diameter ranged from ~30 to ~50 nm. The EDS spectra showed strong peaks of Fe and O. The ESR spectra exposed the paramagnetic properties of WLDPEW–Fe3O4 nanoparticle magnetic composite pellets. The WLDPEW–Fe3O4 nanoparticle magnetic composite pellets were exploited in adsorption of methyl green dye from aqueous solutions at various conditions. The kinetics and the adsorption isotherms were studied. Through results it was observed that the adsorption capacity of WLDPEW–Fe3O4 nanoparticle magnetic composite pellets is 18.5 mg g−1. Therefore, WLDPEW–Fe3O4 nanoparticle magnetic composite pellets could be used in removing dyes from their aqueous solutions.