Influence of the Precipitation Medium and Ultrasonic Wave on the Synthesis of Iron Oxide

Synthesis of Iron oxides by air oxidation of FeSO4 solutions in the presence of NaOH, Diethylenetriamine (DETA), Butylamine (BA) and influence of ultrasonic wave were investigated by XRD, SEM and particle size analyzer. As the DETA addition increased to 0.05 mol, Fe3O4 was formed with goethite(alpha-FeOOH) and Fe3O4 single phase was formed above 0.18mol of DETA. As the BA addition increased, the XRD peak intensity of (020) face of lepidocrocite(gamma-FeOOH) was developed until the formation of Fe3O4 and reduced the size of the iron oxide particles formed. Ultrasonic wave reduced the size of the iron oxide particles but gave little effects on the iron oxide particles synthesized by amine.