Studying the size distribution effect on the Photoluminescence properties of Iron oxide nanoparticles

In this research, iron oxide nanoparticles were synthesized by co-precipitation method. Then by solving the nanoparticles in toluene and reducing the solubility of them by acetone as anti-solvent, different sizes of nanoparticles were selected and separated. After selection and separation, the band structure of the nanoparticles was studied by photoluminescence spectroscopy (PL). X-ray diffraction was used for phase and structure determination of nanoparticles and dynamic light scattering (DLS) and transition electron microscopy (TEM) were used for size determination. The results confirmed the possibility of selection and separation of iron oxide nanoparticles of three nanometers (3nm) and also photoluminescence spectroscopy results showed a red-shift by reducing the size of the iron oxide nanoparticles.