Analytical separation of Au/Ag core/shell nanoparticles by capillary electrophoresis

This paper demonstrates that capillary electrophoresis (CE) can be employed for characterizing the sizes of a series of Au/Ag core/shell nanoparticles (NPs). We effected the CE separation of Au/Ag core/shell NPs using a mixed buffer of sodium dodecyl sulphate (SDS) (40 mM) and 3-(cyclohexylamino)pro...

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Bibliographic Details
Published in:Journal of Chromatography A 2006-11, Vol.1133 (1), p.340-346
Main Authors: Liu, Fu-Ken, Tsai, Ming-Huei, Hsu, Ya-Chuan, Chu, Tieh-Chi
Format: Article
Language:English
Subjects:
Analytical chemistry
Au/Ag
Capillary electrophoresis
Chemistry
Chromatographic methods and physical methods associated with chromatography
Core/shell
Electrophoresis, Capillary - methods
Exact sciences and technology
Gold - chemistry
Hydrogen-Ion Concentration
Microscopy, Electron, Scanning - methods
Nanoparticles
Nanostructures - analysis
Nanostructures - chemistry
Nanotechnology - methods
Other chromatographic methods
Reproducibility of Results
Separation
Silver - chemistry
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Summary:This paper demonstrates that capillary electrophoresis (CE) can be employed for characterizing the sizes of a series of Au/Ag core/shell nanoparticles (NPs). We effected the CE separation of Au/Ag core/shell NPs using a mixed buffer of sodium dodecyl sulphate (SDS) (40 mM) and 3-(cyclohexylamino)propanesulfonic acid (10 mM) at pH 9.7 and an applied voltage of 20 kV. A linear relationship ( R 2 > 0.99) existed between the electrophoretic mobilities and the sizes of the Au/Ag core/shell NPs within the diameter range from 25 to 90 nm; the relative standard deviations of these electrophoretic mobilities were
ISSN:0021-9673
DOI:10.1016/j.chroma.2006.08.033