Effect of Alkali addition procedure on preparation of Fe۳O۴ nanoparticles by co-precipitation method

Nano-sized materials due to their mesoscopic effect, small object effect, quantum size effect and surfaceeffect ratio owe very good physical and chemical properties. Fe۳O۴ nanoparticles represent one of themost promising materials in medical applications In this work, coprecipitation route was used tosynthesize of Fe۳O۴ nanoparticles. The effect of alkali addition procedure on preparation of Fe۳O۴nanoparticles was studied. The products were characterized by X-ray diffraction (XRD), Dynamic lightscattering (DLS) and Transmission electron microscopy (TEM) techniques. For the first procedure,ammonia was added to the salts mixture and for the second one the mixture of salts was added to theammonia. Results demonstrated that when ammonia is added et the mixture of salts, the smaller particlesis obtained in comparison to the case of the addition of the salts to ammonia. All used techniques werein good agreement and that the obtained nanoparticles are about ۱۲ nm for the first procedure and about۱۷ nm for the second one.

کلیدواژه ها:

Fe۳O۴ ، co-precipitation ، alkali ، salt