Speciation of Gold Nanoparticles by Ex Situ Extended X-ray Absorption Fine Structure and X-ray Absorption Near Edge Structure

被引：10

作者：

Giorgetti, Marco ^{[1
]}

Aquilanti, Giuliana ^{[2
]}

Ballarin, Barbara ^{[1
]}

Berrettoni, Mario ^{[1
]}

Cassani, Maria Cristina ^{[1
]}

Fazzini, Silvia ^{[1
]}

Nanni, Daniele ^{[1
]}

Tonelli, Domenica ^{[1
]}

机构：

[1] Univ Bologna, Dept Ind Chem Toso Montanari, Viale Risorgimento 4, I-40136 Bologna, Italy

[2] Elettra Sincrotrone Trieste SCpA, Ss 14 Km 163-5, I-34149 Trieste, Italy

来源：

ANALYTICAL CHEMISTRY | 2016年 / 88卷 / 13期

关键词：

BODY DISTRIBUTION-FUNCTIONS; IN-SITU; SYNCHROTRON-RADIATION; METAL NANOPARTICLES; AU NANOPARTICLES; CONDENSED MATTER; SPECTROSCOPY; EXAFS; XANES; NANOCLUSTERS;

D O I：

10.1021/acs.analchem.6b01524

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A combined X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) methodology is here presented on a series of partially and fully reduced Au-III samples. This allows monitoring the relative fraction of Au-III and Au-0 in the studied samples, displaying a consistent and independent outcome. The strategy followed is based, for the first time, on two structural models that can be fitted simultaneously, and it evaluates the correlation among strongly correlated parameters such as coordination number and the Debye-Waller factor. The results of the present EXAFS and XANES approach can be extended to studies based on X-ray absorption spectroscopy experiments for the in situ monitoring of the formation of gold nanoclusters.

引用

收藏

页码：6873 / 6880

页数：8

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