Some Properties of Iron Oxide Nanoparticles Synthesized in Different Conditions

Iron oxide nanoparticles were synthesized by coprecipitation method using ammonia as precipitation agent. Most researchers usually add ammonia into the iron salt solution but in this work the salt solution drop wise has been added to the ammonia and the results were compared with those of other researches. The effect of reaction temperature, and concentration of reactants on the size of nanoparticles were investigated. The size of particles was calculated by Sherrer formula and compared with the size of nanoparticles obtained by TEM. The size of produced nanoparticles ranged from 8 to 17 nanometer. It was found that increasing reaction temperature affect the properties of nanoparticles, but variation of concentration of ammonia did not change any thing.