Separation of Nanoparticles in a Density Gradient: FeCo@C and Gold Nanocrystals

被引：129
|
作者：
Sun, Xiaoming [1 ,2 ]
Tabakman, Scott M. [1 ]
Seo, Won-Seok [1 ]
Zhang, Li [1 ]
Zhang, Guangyu [1 ]
Sherlock, Sarah [1 ]
Bai, Lu [2 ]
Dai, Hongjie [1 ]
机构：
[1] Stanford Univ, Dept Chem, Stanford, CA 94305 USA
[2] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2009年 / 48卷 / 05期
关键词：
density gradients; nanoparticles; sedimentation; separation; size distribution; WALLED CARBON NANOTUBES; CDSE NANOCRYSTALS; SIZE; SHAPE; ELECTROPHORESIS; SELECTION;
D O I：
10.1002/anie.200805047
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
(Chemical Equation Presented) The right sort: A post-synthesis, liquid-phase separation method sorts nanoparticles by centrifugation in a medium with a density gradient. The particles are sorted according to particle size, clustering degree, and core density (see picture; d=sedimentation distance). Solid-solid interactions between colloidal particles and stable phases are thus avoided. This versatile method allows for determination of the colloid size distribution in a suspension. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码：939 / 942
页数：4
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