Refinement of Magnetite Nanoparticles by Coating with Organic Stabilizers
AbstractMagnetite nanoparticles are of great importance in nanotechnology and nanomedicine and have found manifold applications. Here, the effect of coating of magnetite nanoparticles with organic stabilizers, such as O-phosphoryl ethanolamine, glycerol phosphate, phospho-l-ascorbic acid, phospho-d,l-serine, glycolic acid, lactic acid, d,l-malic acid, and d,l-mandelic acid was studied. Remarkably, this procedure led to an improvement of saturation magnetization in three cases rather than to an unfavorable decrease as usually observed. Detailed X-ray powder diffraction investigations revealed that changes in the average crystallite occurred in the coating process. Surprisingly, changes of the average crystallite sizes in either direction were further observed, when the exposure time to the stabilizer was increased. These results imply a new mechanism for the well-known coating of magnetite nanoparticles with stabilizers. Instead of the hitherto accepted simple anchoring of the stabilizers to the magnetite nanoparticle surfaces, a more complex recrystallization mechanism is likely, wherein partial re-dispersion of magnetite moieties from the nanoparticles and re-deposition are involved. The results can help producers and users of magnetite nanoparticles to obtain optimal results in the production of core shell magnetite nanoparticles. View Full-Text
- Supplementary File 1:
Supplementary (PDF, 923 KB)
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Cîrcu, M.; Nan, A.; Borodi, G.; Liebscher, J.; Turcu, R. Refinement of Magnetite Nanoparticles by Coating with Organic Stabilizers. Nanomaterials 2016, 6, 228.
Cîrcu M, Nan A, Borodi G, Liebscher J, Turcu R. Refinement of Magnetite Nanoparticles by Coating with Organic Stabilizers. Nanomaterials. 2016; 6(12):228.Chicago/Turabian Style
Cîrcu, Monica; Nan, Alexandrina; Borodi, Gheorghe; Liebscher, Jürgen; Turcu, Rodica. 2016. "Refinement of Magnetite Nanoparticles by Coating with Organic Stabilizers." Nanomaterials 6, no. 12: 228.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.