Local structural characterization of Au/Pt bimetallic nanoparticles

被引：27

作者：

Chen, HM

Peng, HC

Liu, RS

Hu, SF

Jang, LY

机构：

[1] Natl Taiwan Univ, Dept Chem, Sect 4, Taipei 106, Taiwan

[2] Natl Nano Device Labs, Hsinchu 300, Taiwan

[3] Natl Synchrotron Radiat Res Ctr, Hsinchu 300, Taiwan

来源：

CHEMICAL PHYSICS LETTERS | 2006年 / 420卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2005.12.086

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, we examined the amount-dependent change in morphology for a series of Au/Pt bimetallic nanoparticles synthesized using chemical reduction. The Au/Pt molar ratio was varied from 1/1 to 1/4 to synthesize Pt shell layers with different thicknesses. We have obtained that these bimetallic nanoparticles can form flower-like nanoparticles. Moreover, an extended X-ray absorption fine structure (EXAFS) analysis was used to demonstrate the structure of Au/Pt bimetallic nanoparticles. The EXAFS results confirmed the formation of a core-shell structure and inter-diffusion between Au and Pt atoms. The composition of the shell layer was found to be Pt-enriched Au/Pt alloy. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：484 / 488

页数：5

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