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

页码：939 / 942

页数：4

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