Structure of gold nanoparticles suspended in water studied by x-ray diffraction and computer simulations

被引：102

作者：

Petkov, V ^{[1
]}

Peng, Y

Williams, G

Huang, BH

Tomalia, D

Ren, Y

机构：

[1] Cent Michigan Univ, Dept Phys, Mt Pleasant, MI 48859 USA

[2] Cent Michigan Univ, Dept Biol, Mt Pleasant, MI 48859 USA

[3] Dendrit NanoTechnol, Mt Pleasant, MI 48858 USA

[4] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW B | 2005年 / 72卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.72.195402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Gold nanoparticles with an average size of 3 nm, 15 nm, and 30 nm suspended in water have been studied by x-ray diffraction and computer simulations. The atomic pair distribution function approach was employed to determine the three-dimensional structure because of the limited structural coherence in these nanostructured materials. The nanoparticles possess a well-defined atomic arrangement resembling the face-centered cubic (fcc) structure occurring with bulk gold. The fcc-type features of this arrangement become more prominent with increasing nanoparticle size. The study provides a clear picture of the nanoparticles' size-structure relationship and can help open up the route for calculating and predicting of their useful properties.

引用

页数：8

共 40 条

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