Superparamagnetic Fe3O4SiO2 nanocomposites: enabling the tuning of both the iron oxide load and the size of the nanoparticles.

@article{Stjerndahl2008SuperparamagneticFN,
  title={Superparamagnetic Fe3O4SiO2 nanocomposites: enabling the tuning of both the iron oxide load and the size of the nanoparticles.},
  author={Maria Stjerndahl and Martin G I Andersson and Holly E Hall and Daniel M. Pajerowski and Mark W. Meisel and Randolph S Duran},
  journal={Langmuir : the ACS journal of surfaces and colloids},
  year={2008},
  volume={24 7},
  pages={3532-6}
}
Using a water-in-oil microemulsion system, silica nanoparticles containing superparamagnetic iron oxide (SPIO) crystals have been prepared and characterized. With this method, the loading of iron oxide crystals, the thickness of the silica shells, and the overall particle sizes are tunable. Moving from low to high water concentration, within the microemulsion region, resulted in a gradual shift from larger particles, ca. 100 nm and fully loaded with SPIOs, to smaller particles, ca. 30 nm… CONTINUE READING

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