TY - JOUR
T1 - Studying the size/shape separation and optical properties of silver nanoparticles by capillary electrophoresis
AU - Liu, Fu Ken
AU - Ko, Fu-Hsiang
AU - Huang, Pei Wen
AU - Wu, Chien Hou
AU - Chu, Tieh Chi
PY - 2005/1/7
Y1 - 2005/1/7
N2 - This paper describes the feasibility of employing capillary electrophoresis (CE) to separate silver particles in nanometer regimes. We have found that the addition of an anionic surfactant, sodium dodecyl sulphate (SDS), to the running electrolyte prevents coalescence of the silver particles during the process, which improves the separation performance; the concentration of SDS required for optimal silver nanoparticle separation is ca. 20 mM. By monitoring the electropherograms using a diode-array detection (DAD) system, we have also investigated the separation of suspended silver nanorods with respect to their shapes. Our results demonstrate that the combination of CE and DAD is a powerful one for the separation and characterization of various silver nanoparticles.
AB - This paper describes the feasibility of employing capillary electrophoresis (CE) to separate silver particles in nanometer regimes. We have found that the addition of an anionic surfactant, sodium dodecyl sulphate (SDS), to the running electrolyte prevents coalescence of the silver particles during the process, which improves the separation performance; the concentration of SDS required for optimal silver nanoparticle separation is ca. 20 mM. By monitoring the electropherograms using a diode-array detection (DAD) system, we have also investigated the separation of suspended silver nanorods with respect to their shapes. Our results demonstrate that the combination of CE and DAD is a powerful one for the separation and characterization of various silver nanoparticles.
KW - Capillary electrophoresis
KW - Silver nanoparticles
KW - Size and shape separation
UR - http://www.scopus.com/inward/record.url?scp=10644257693&partnerID=8YFLogxK
U2 - 10.1016/j.chroma.2004.11.010
DO - 10.1016/j.chroma.2004.11.010
M3 - Article
C2 - 15679152
AN - SCOPUS:10644257693
SN - 0021-9673
VL - 1062
SP - 139
EP - 145
JO - Journal of Chromatography A
JF - Journal of Chromatography A
IS - 1
ER -