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One parameter control of the size of iron oxide nanoparticles synthesized in reverse micelles

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4 Author(s)
Shultz, M.D. ; Virginia Commonwealth University, Richmond, Virginia 23284, USA ; Braxton, W. ; Taylor, C. ; Carpenter, E.E.

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Iron oxide nanoparticles were synthesized via reverse micelle methods. The initial iron concentration was varied, while maintaining all other parameters constant, in order to investigate the effect of the iron concentration on the resultant iron oxide nanoparticle size. Increasing the iron concentration from 0.125M to 0.5M yielded an increase in average nanoparticle diameter from 4.71 to 7.95 nm, as measured by transmission electron microscopy. Three other concentrations between 0.125M and 0.5M showed corresponding size variations, all with statistical significance. Magnetic characterization by vibrating sample magnetometry and powder x-ray diffraction was performed to verify proper phase and material. Further insight into the reverse micelle method was acquired along with the ability to tune the nanoparticle size.

Published in:

Journal of Applied Physics  (Volume:105 ,  Issue: 7 )