Abstract
The formation of iron oxide nanoparticles in course of a sol-gel preparation process was traced by UV/Vis and 57Fe Mössbauer absorption spectroscopy. Samples were extracted at different stages of the reaction. While spectra measured on samples extracted at low reactor temperatures showed the starting materials Fe(acac)3 diluted in benzyl alcohol undergoing slow paramagnetic relaxation, a sample extracted at a reactor temperature of 180 °C gave clear evidence for emerging iron oxide nanoparticles. A prolonged stay at 200 °C results in a complete transformation from Fe(acac)3 to maghemite nanoparticles.
Thirteenth Latin American Conference on the Applications of the Mössbauer Effect, LACAME 2012, Medelín Columbia, 11–16 November 2012.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Frey, N.A., Peng, S., Cheng, K., Sun, S.: Magnetic nanoparticles: synthesis, functionalization, and applications in bioimaging and magnetic energy storage. Chern. Soc. Rev. 38, 2532–2542 (2009)
Grabs, I.-M., Bradtmöller, C., Menzel, D., Garnweitner, G.: Formation mechanism of iron oxide nanoparticles in different nonaqueous media. Cryst. Growth Des. 12, 1469–1475 (2012)
Muhammad, A: Lewis Acidity of Tris(acetylacetonate) iron (III) Interactions with some Phosphine Derivative in Methylene Chloride Solution. J. Chern. Soc. Pale 14, 88 (1992)
Wignall, J.W.G.: Mössbauer line broadening in trivalent iron compounds. J. Chern. Phys. 44, 2462(1966)
Wickman, H.H., Wertheim, G.K.: Spin relaxation in solids and aftereffects of nuclear transforma tions. In: Goldankii, V.I., Herber, R.H. (eds.) Chemical Applications of Mössbauer Spectroscopy, chapter 12. Academic Press, London (1968)
Serna, C.J., Bødker, F., Mørup, S., Morales, M.P., Sandiumenge, F., Veintemillas-Verdaguer, S.: Spin frustration in maghemite nanoparticles. Solid State Commun. 118, 437–440 (2001)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2013 Springer Science+Business Media Dordrecht
About this paper
Cite this paper
Kraken, M., Masthoff, IC., Borchers, A., Litterst, F.J., Garnweitner, G. (2013). Formation of magnetic nanoparticles studied during the initial synthesis stage. In: Meneses, C.A.B., Caetano, E.P., Torres, C.E.R., Pizarro, C., Alfonso, L.E.Z. (eds) LACAME 2012. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-6482-8_7
Download citation
DOI: https://doi.org/10.1007/978-94-007-6482-8_7
Published:
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-007-6481-1
Online ISBN: 978-94-007-6482-8
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)