Synthesis of iron oxide nanoparticles via sonochemical method and their characterization

Preparation of iron oxide (α-Fe2O3) nanoparticles was carried out via a sonochemical process. The process parameters such as temperature, sonication time and power of ultrasonication play important roles in the size and morphology of the final products. The iron oxide nanoparticles were characterized by transmission electron microscopy, X-ray powder diffraction, and thermogravimetric and differential thermal analyses. From transmission electron microscopy observations, the size of the iron oxide nanoparticles is estimated to be significantly smaller than 19 nm. X-ray diffraction data of the powder after annealing provide direct evidence that the iron oxide was formed during the sonochemical process.

Graphical abstractSonochemically synthesized α-Fe2O3nanoparticles. Preparation of α-Fe2O3 nanoparticles was carried out via a sonochemical process. TEM shows the size of the iron oxide nanoparticles smaller than 19 nm. XRD data of the powder after annealing provide direct evidence that the iron oxide was formed during the sonochemical process.Figure optionsDownload full-size imageDownload as PowerPoint slide