Research on the Preparation and Characterization of Magnetic Nanoparticles (MNPs) By Chemical Co-precipitation

Guizhong Zhou, Shuo Xu, Wenqian Li, Qian Yao, Dayi Zhang
2016 Proceedings of the 6th International Conference on Information Engineering for Mechanics and Materials   unpublished
The synthesis and characterization of magnetic nanoparticles (MNPs) are attracting more and more attention in recent years. By chemical co-precipitation, NH 3 ·H 2 O as precipitant, reaction with the mixed solution of Fe 2+ and Fe 3+ , then obtain the nanometer magnetite. The sizesof the products are affected by temperature, stirring speed, the concentration of ferric salt, precipitant concentration, the amount of reactants, and the addition with PAAH which makes its good dispersion. The
more » ... persion. The results showed that the best reaction conditions as follows: reactant ratio is Fe 2+ :Fe 3+ :NH 3 · H 2 O=1:1:10; precipitant concentration of ammonia is 0.25mol/L; iron concentration (the same solution concentration of Fe 2+ and Fe 3+ ) is 0.5mol/L; the temperature control at 25℃; the stirring speed of 1000r/min. The XRD and SEM had carried on the preliminary characterization to MNPs analysis which showed the particle size of MNPs is about 20nm. The magnetic properties of MNPs had also tested by VSM.
doi:10.2991/icimm-16.2016.36 fatcat:lk3iwlwkizdwte2xwl7qsngnlu