Chemical and magnetic properties characterization of magnetic nanoparticles

Abstract

This paper deals with the characterization of magnetic iron oxide nanoparticles. Pure magnetite (Fe3O4) and noble metal doped magnetite were synthesized following a new sustainable microwave-assisted method. Furthermore, an experimental analysis was carried out to investigate the chemical and magnetic properties of these new nanopowders. Morphological and chemical characteristics of the pure magnetite and magnetite modified by noble metals such as palladium, platinum and ruthenium are provided together with the relevant B-H magnetic curve. Among the adopted measurement techniques, the purity of magnetite phase was analyzed via Fourier Transform Infrared Spectroscopy (FT-IR) and X-Ray Diffraction (XRD), while a Vibrating Sample Magnetometer (VSM) characterized the magnetic behavior of the nanopowder samples

Synthesis of Fe3O4/ZnO nanoparticles and their application for the photodegradation of anionic and cationic dyes

“…The XRD pattern of iron oxide samples also showed that the material had good crystallinity. Peaks at 2Θ of 30.20, 35.60, 43.20, 54.00 and 57.35 corresponding to (220), (311), (400), (422) and (511), were in the accordance with Fe 3 O 4 structures (Bertolucci et al 2015). The peaks at 2Θ of 24.10, 33.10, 40.80 and 50.15 corresponded to (012), (104), (440) and (024) and were characteristic for the Fe 2 O 3 phase (Aliahmad and Nasiri Moghaddam 2013;Han et al 2014).…”

Green Synthesis of FexOy Nanoparticles with Potential Antioxidant Properties

“…The peaks observed between 630 and 580 cm −1 could be assigned to the stretching vibration of the Fe-O bond in the crystalline lattice of magnetite (Fe 3 O 4 ). Furthermore, although the literature shows no bonds above 600 cm −1 [ 74 ], new absorption bands with noticeable intensity located around 1627 and 1390 cm −1 , in addition to other peaks at 1285 and 1085 cm −1 with lower intensity, appear in the Fe 3 O 4 FTIR spectra [ 75 ]. In addition, the stretching vibration of Fe-O of the tetrahedral iron atom in Fe 3 O 4 appears around 620 cm −1 [ 76 ].…”

“…In addition, the stretching vibration of Fe-O of the tetrahedral iron atom in Fe 3 O 4 appears around 620 cm −1 [ 76 ]. However, the presence of peculiar bonds in the range of 740–620 cm −1 could be attributed to the maghemite phase (γ-Fe 2 O 3 ) [ 74 ].…”

Surface Magnetic Properties and Magnetization Dynamics of Magnetite Nanoparticles Doped with Platinum Ions

“…So, the superparamagnetic magnetite particles doped with precious metals, including platinum, may be used as an effective agent for diagnostic and anticancer therapy [1]. The formation of magnetite particles in the presence of noble metal cations results in the changes of magnetic characteristics of the samples, their morphology, physical and chemical properties as well [2].…”