Characterization of iron oxide nano particles prepared by sonochemical method

Nanoparticles have achieved large attention in the last decade due to their large applications in many fields, Iron oxide nanopowder is one of the promising material due to their unique properties, many methods have been used to synthesize iron oxide nanopowder. in this research, Iron Oxide nanopowder is synthesized by Sonochemical method by using precursors of ferric chloride and ferrous sulfate. Many studies of iron oxide nanopowder has been studies, including Surface morphology, Structural morphology and optical studies. The synthesis of iron oxide’s surface morphology was investigated using SEM and AFM. The SEM analyses indicates the formation of the nanoparticles with a mean size below 100 nm, image processing is used to calculate particle size of some iron oxide nanopowder and its showed that all measured particles are in the Nano range. The 2 Dimension and 3 Dimension of Atomic Force Microscopy (AFM) images of iron oxide particles show a uniformly average size ranging from 51-100 nm, with a spherical shape, which confirmed the SEM results. Structural characteristics of the XRD pattern show very thin peaks indicating small crystalline size and the fine nature of the particles with a cubic spinal structure, the peaks of the XRD visible at 2θ≈30.640, 36.030, 43.310, 58.040 and 63.150. The crystallite size has been calculated using Scherer equation and its found between 40 to 78 nm and the cell parameters of IONPs has been calculated using Bragg’s equation, The EDS spectra shows only the peaks of Oxygen and Iron, the Fe percent was (80.75 %) by weight. In contrast, the percent of O is (19.25%) by weight; the optical properties of the iron oxide sample show a broad absorption band around 520 nm. This broadening may be attributed to adsorbed molecules. So, all studies showed the formation of Iron oxide nanopowder with high purity and small particle size.