Issue 28, 2013
From the journal:

Physical Chemistry Chemical Physics

An in situXAFS study—the formation mechanism of gold nanoparticles from X-ray-irradiated ionic liquid†

Jingyuan Ma,ab   Yang Zou,*ab   Zheng Jiang,ab   Wei Huang,ab   Jiong Li,ab   Guozhong Wu,ab   Yuying Huang*ab  and  Hongjie Xu*ab  

* Corresponding authors

a Shanghai Institute of Applied Physics, Chinese Academy of Sciences, No. 2019, Jia Luo Road, Jiading District, Shanghai, China
E-mail: zouyang@sinap.ac.cn, xuhongjie@sinap.ac.cn

b Shanghai Institute of Applied Physics, Chinese Academy of Sciences, No. 239, Zhangheng Road, Pu Dong District, Shanghai 201204, China
E-mail: huangyuying@sinap.ac.cn

Abstract

An in situ X-ray absorption fine structure (XAFS) experiment has been performed to observe the evolution of gold nanoparticles in the ionic liquid [BMIM][AuCl4], by hard X-ray irradiation. The ionic liquid acts as both a reducing agent and a protective ligand. A synchrotron-based X-ray plays the role of the irradiation source, which induces the reduction of the gold species, as well as being a real time probe for XAFS measurements. From the extended X-ray absorption fine structure (EXAFS) fitting results for a series of spectra of gold L3-edge, it can be seen clearly that there is a single Au–Cl bond breaking process before the formation of Au–Au bonds, which is different from previous reports on the formation of Au nanoparticles by several chemical methods.

Graphical abstract: An in situ XAFS study—the formation mechanism of gold nanoparticles from X-ray-irradiated ionic liquid

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Article information

DOI
https://doi.org/10.1039/C3CP51743H
Article type
Paper
Submitted
24 Apr 2013
Accepted
21 May 2013
First published
21 May 2013

Phys. Chem. Chem. Phys., 2013,15, 11904-11908

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An in situ XAFS study—the formation mechanism of gold nanoparticles from X-ray-irradiated ionic liquid

J. Ma, Y. Zou, Z. Jiang, W. Huang, J. Li, G. Wu, Y. Huang and H. Xu, Phys. Chem. Chem. Phys., 2013, 15, 11904 DOI: 10.1039/C3CP51743H

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