Article ID Journal Published Year Pages File Type
598512 Colloids and Surfaces A: Physicochemical and Engineering Aspects 2006 4 Pages PDF
Abstract

Different amounts of tetramethylammonium hydroxide (TMA) were employed to peptize the Fe3O4 magnetic nanoparticles. Electrophoresis measurements show that the stability of the magnetic nanoparticles is dependent on the amount of TMA used. After growth of the silica protection layer on the nanoparticle surface, Fe3O4/SiO2 composite core/shell particles with different number of cores were synthesized. Under the optimal amount of TMA used, uniform Fe3O4/SiO2 composite core/shell nanoparticles with a poly-dispersivity of 10.8% were prepared.

Related Topics
Physical Sciences and Engineering Chemical Engineering Colloid and Surface Chemistry
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