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Magnetite Nanoparticle-Linked Immunosorbent Assay
The Journal of Physical Chemistry C, 2008Using chitosan-modified magnetite nanoparticles (CS-MNPs) as a replacement of enzymes in conventional ELISA configurations, a magnetic nanoparticle-linked immunosorbent assay is developed. The CS-MNPs are synthesized by using a one-step solvothermal process, where chitosan in the reaction system is used both as a ligand and as a surface modification ...
Lizeng Gao +5 more
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Mössbauer studies of magnetite nanoparticles
Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques, 2014Magnetite Fe3O4 samples with different levels of dispersion (“bulk” and nanoscale particles with an average diameter of 24, 14 and 7 nm) are studied using Mossbauer spectroscopy. It is shown that this method of analysis makes it possible to obtain important information about the features of magnetic states of iron-containing nanoparticles and, more ...
M. A. Shipilin +3 more
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Magnetotransport of magnetite nanoparticle arrays
Physical Review B, 2006We combine a material self-assembly with conventional lithographic processes in order to fabricate magnetoelectronic devices composed of ordered three-dimensional arrays of magnetite $({\mathrm{Fe}}_{3}{\mathrm{O}}_{4})$ nanoparticles. The device magnetoresistance reaches 35% at 60 K, corresponding to an electron spin polarization of 73 ...
Hao Zeng +5 more
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Extrinsic magnetoresistance in magnetite nanoparticles
Journal of Applied Physics, 2003Magnetite (Fe3O4) nanoparticles, 8 to 9 nm in size, have been synthesized using an aqueous precipitation technique. X-ray diffraction and chemical titration confirm a single cubic spinel phase with expected stoichiometry. Superparamagnetic behavior has been observed in pressed pellets of the nanoparticles above 200 K.
Kai Liu +4 more
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Strong adsorption of chlorotetracycline on magnetite nanoparticles
Journal of Hazardous Materials, 2011In this work, environmentally friendly magnetite nanoparticles (Fe(3)O(4) MNPs) were used to adsorb chlorotetracycline (CTC) from aqueous media. Fe(3)O(4) MNPs exhibit ultrahigh adsorption ability to this widely used antibiotic. The adsorption behavior of CTC on Fe(3)O(4) MNPs fitted the pseudo-second-order kinetics model, and the adsorption ...
Di, Zhang +4 more
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Mechanochemical Activation of Magnetite Nanoparticles
Journal of Nanoparticle Research, 2000Using Mossbauer spectroscopy as a function of ball milling time, it was found that nanomagnetite behaves differently than magnetite during mechanochemical activation. The phase sequence is determined by the original particle size of the powder.
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