Preparation and properties of various magnetic nanoparticles.

Sensors
Jana DrbohlavovaJaromir Hubalek

Abstract

The fabrications of iron oxides nanoparticles using co-precipitation and gadolinium nanoparticles using water in oil microemulsion method are reported in this paper. Results of detailed phase analysis by XRD and Mössbauer spectroscopy are discussed. XRD analysis revealed that the crystallite size (mean coherence length) of iron oxides (mainly γ-Fe(2)O(3)) in the Fe(2)O(3) sample was 30 nm, while in Fe(2)O(3)/SiO(2) where the ε-Fe(2)O(3) phase dominated it was only 14 nm. Gd/SiO(2) nanoparticles were found to be completely amorphous, according to XRD. The samples showed various shapes of hysteresis loops and different coercivities. Differences in the saturation magnetization (MS) correspond to the chemical and phase composition of the sample materials. However, we observed that MS was not reached in the case of Fe(2)O(3)/SiO(2), while for Gd/SiO(2) sample the MS value was extremely low. Therefore we conclude that only unmodified Fe(2)O(3) nanoparticles are suitable for intended biosensing application in vitro (e.g. detection of viral nucleic acids) and the phase purification of this sample for this purpose is not necessary.

References

Aug 4, 2004·Journal of Biotechnology·Andreas HüttenGareth Thomas
Jun 2, 2006·Journal of Nanoscience and Nanotechnology·Jirí TucekDimitris Petridis
Feb 6, 2007·Angewandte Chemie·An-Hui LuFerdi Schüth
Apr 4, 2007·The Journal of Physical Chemistry. B·Libor MachalaAharon Gedanken
Jan 8, 2008·Chemistry of Materials : a Publication of the American Chemical Society·Jin XieShouheng Sun
Jun 20, 2008·Biotechnology and Bioengineering·Hironori IidaTetsuya Osaka

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Citations

Mar 7, 2012·Pharmaceutical Research·Christine RümenappAxel Haase
Sep 3, 2013·Journal of Pharmaceutical and Biomedical Analysis·Kristyna SmerkovaRene Kizek
Aug 4, 2010·Analytica Chimica Acta·K Aguilar-ArteagaE Barrado
Feb 13, 2010·Pharmacological Research : the Official Journal of the Italian Pharmacological Society·Jana ChomouckaJaromir Hubalek
Dec 15, 2015·Nanomedicine : Nanotechnology, Biology, and Medicine·Roland AgostonRohan Steel
Dec 4, 2012·Sensors·Marketa RyvolovaRene Kizek
Feb 8, 2019·Journal of Nanobiotechnology·Anastasiia GaraninaRustem Uzbekov
Sep 1, 2016·Journal of Nanobiotechnology·Irina B AlievaRustem E Uzbekov
Oct 3, 2018·Journal of Colloid and Interface Science·Venkatesh S Guruprasad, Vivek Maheshwari

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Methods Mentioned

BETA
Scanning Electron Microscopy
X-ray
biosensing

Software Mentioned

HighScore

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