Iron oxide (II,III), Fe3O4 magnetic nanoparticles

Iron Oxide Fe3O4 magnetic nanoparticles Particular Materials
Iron Oxide Fe3O4 magnetic nanoparticles Particular Materials

Iron Oxide nanoparticles in their magnetite crystal form (Fe3O4) are the most explored magnetic nanoparticles, due to their extensive application within catalysis, biomedicine, photonic crystals, microfluidics, data storage, environmental remediation and optical filters,

We at Particular Materials synthesize nano magnetic Fe3O4 and we produce dispersions with excellent stability, monodispersity and fully disaggregated state.

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Technical Information

Our Iron oxide Fe3O4 nanoparticles portfolio consist of magnetite (Fe3O4) particles with diameters ranging from 4 to 70 nanometer and find applications in several industries.

Magnetic NPs, with sizes between 2 and 20 nm display superparamagnetism, i.e. their magnetization is zero, in the absence of an external magnetic field and they can be magnetized by an external magnetic source. This property provides additional stability for magnetic nanoparticles in solutions.

In order to be able to take advantage of the various properties of iron oxide (Fe3O4) nanoparticles, significant care needs to be taken in controlling size, monodispersity and crystalline structure.

We at Particular Materials synthesize nano magnetic Fe3O4 and we produce dispersions with excellent stability, monodispersity, crystalline purity and fully disaggregated state.

Please download our Technical Data Sheet for complete information.

The Fe3O4 nanoparticles are available in four different size:

  • 3.6 ± 1.2 nm
  • 5.4 ± 1.2 nm
  • 7.8 ± 2.9 nm
  • 14 ± 6 nm

Typical concentration in water are, by weight (w/w%):

  • 1%
  • 5%
  • 20%

Iron Oxide nanoparticles surface can be modified, and can be carbon coated, coated with organic acids, polymers, amines or any stabilizer of interest. Fe3O4 can also be provided as nanopowder.

Related Applications and Industries

Fe3O4 nanoparticles have attracted considerable interest due to their superparamagnetic properties and their potential biomedical applications arising from its biocompatibility and non-toxicity.

Among other industries, Iron oxide Fe3O4 nanoparticles are used as magnetic data storage, biosensors, drug-delivery, ferrofluids, magnetic coatings, EM-waves absorbing coatings, wastewater purification.

In addition to the applications already mentioned, iron oxide nanoparticles play crucial rules in dozens of other magnetic devices and applications, such as medical imaging, cell separation, and refrigeration.

A peculiar characteristic of all nanoparticles is the high surface area to volume ratio, that allows a considerably higher binding capacity and excellent dispersibility of NPs in solutions.

For more detailed technical information, please download our technical data sheet.


Selected nanotechnology research articles

Efficacy and safety of intratumoral thermotherapy using magnetic iron-oxide nanoparticles combined with external beam radiotherapy on patients with recurrent glioblastoma multiforme. Maier-Hauff, K., Ulrich, F., Nestler, D. et al. J Neurooncol (2011) 103: 317.

Synthesis, Surface Modification and Characterisation of Biocompatible Magnetic Iron Oxide Nanoparticles for Biomedical Applications. Mahdavi, M.; Ahmad, M.B.; Haron, M.J.; Namvar, F.; Nadi, B.; Rahman, M.Z.A.; Amin, J. Molecules 2013, 18, 7533-7548.

Superparamagnetic Iron Oxide Nanoparticle Probes for Molecular Imaging. Thorek, D.L.J., Chen, A.K., Czupryna, J. et al. Ann Biomed Eng (2006) 34: 23.