Influence of the synthesis conditions on the size of Fe3O4 nanoparticles obtained by the sonochemical method

The influence of the synthesis conditions (duration and accepted acoustic power, concentration of the precipitator and initial reagents) on the size and size distribution of Fe3O4 nanoparticles was determined. The optimum ultrasonication time with a frequency of 35 kHz and an accepted acoustic power of 3.7 W for the synthesis of the nanoparticles with the narrowest size distribution is 5 min. The synthesized nanoparticles were characterized by scanning electron microscopy and X-ray diffraction analysis.