Optimal Method for Preparation of Magnetite Nanoparticles

Abstract

This paper deals with the synthesis and characterization of magnetite nanoparticles via the controlled modified chemical coprecipitation method using ferrous and ferric salt solution in alkaline medium with out any surfactant addition. The nanoparticles of 9–14 nm in size were prepared under non-oxidized environment and characterized by transmission electron microscopy, energy dispersive X-rays spectrometry, X-ray diffraction and BET surface area analyzer. The reaction temperature and the stirring rate during the precipitation were found to be crucial in limiting their size and size distribution. Low temperature and high stirring rate are the appropriate conditions for the synthesis of these particles.