A New Method for Separation of Hydrophobic Au Nanoparticles in the Reversal Micelle
Fu Yun Zhi
Du Yu Kou
Journal of Dispersion Science and Technology, 2007, 28(4): 633-637.
In this article, a new method which not only can separate hydrophobic Au nanoparticles (NPs), but also obtain highly monodisperse NPs is discussed. A self-made device of two same burettes, one of which was inserted into the other, was used for separating the nanoparticles by washing the reversal micelle. The effects of separation were characterized and analyzed by micrograph of transmission electron microscope (TEM), UV-vis spectra, quartz crystal microbalance (QCM), and energy dispersive x-ray analysis (EDX). It has been shown that, the smaller nanoparticles are, the easier they are to stay at the reversal micelle and the narrower the sizes are. This method can be applied to synthesize highly monodisperse Au NPs.
Self-made device; monodisperse Au NPs; washing separation