Optimizing effective experimental parameters on the size of magnetic samarium nanoparticles

Magnetic nanoparticles have received much attention in the biomedical research due to their unique magnetic properties and their ability in responding to external magnetic fields. Iron and samarium as the most abundant organic metal element and the rare earth element belonging to lanthanides, respectively, show magnetic properties. Considering the importance of size on the physical and chemical properties of materials, the present study was conducted to investigate the effect of laboratory factors on the size of magnetic nanoparticles containing samarium and iron. Green synthesis of magnetic samarium nanoparticles was performed by hydrothermal method using ginger extract. To this end, the effect of different parameters such as reactants ratio, solution pH, and hydrothermal process time on the size of synthesized nanoparticles was evaluated. To do this, samples were synthesized at pHs of ۱۰ and ۱۱ for ۲, ۴, ۹, and ۱۷ hours at ۲۰۰ °C. The structure and size of the resulting nanoparticles were investigated by X-ray diffraction (XRD) and dynamic light scattering (DLS)analyses. The size of the synthesized nanoparticles at a constant pH was about ۱۱ and the different durations of ۲, ۴, and ۹ hours were determined to be ۱۷۸, ۱۶۸ and ۱۴۴ nm, respectively. Based on the laboratory data, it can be predicted that under optimal conditions (pH of ۱۱, duration of more than ۹ hours and deoxygenation of the reaction solution), nanoparticles with the size of less than ۱۰۰ nm can be obtained which are useful for biomedical applications.

کلیدواژه ها:

Magnetic ، nanoparticles ، synthesis