Dispersion of magnetic nanoparticles in suspension.

Citation:

Sen T, Magdassi S, Nizri G, Bruce IJ. Dispersion of magnetic nanoparticles in suspension. Micro Nano Lett.Micro & Nano Letters [Internet]. 2006;1 (1) :39 - 42.

Date Published:

2006///

Abstract:

Pure magnetite nanoparticles (Fe3O4) have been synthesized in water by copptn. using two different approaches (from ferrous sulfate and a mixt. of ferrous and ferric chlorides). All materials aggregated in aq. suspension, but their subsequent dispersion on treatment with a variety of agents was obsd. to be different. Magnetite produced using ferrous sulfate could not be disaggregated, whereas magnetite produced from a mixt. of ferrous and ferric chlorides could be disaggregated to a quasi-monodispersed form. The dispersing agents were tetra-Me ammonium hydroxide, Disperbyk 190 and polyacrylic acid. The finding has potentially important implications for the surface activation of superparamagnetic magnetite nanoparticles and their ability to be used in bio/life science applications. [on SciFinder(R)]

Notes:

CAPLUS AN 2008:1135482(Journal; Online Computer File)

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