Probing the chemical interaction between iridium nanoparticles and ionic liquid by XPS analysis

被引：63

作者：

Bernardi, F. ^{[1
]}

Scholten, J. D. ^{[2
]}

Fecher, G. H. ^{[3
]}

Dupont, J. ^{[2
]}

Morais, J. ^{[1
]}

机构：

[1] Univ Fed Rio Grande do Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil

[2] Univ Fed Rio Grande do Sul, Lab Mol Catalysis, Inst Quim, BR-91501970 Porto Alegre, RS, Brazil

[3] Johannes Gutenberg Univ Mainz, Inst Anorgan & Analyt Chem, D-55099 Mainz, Germany

来源：

CHEMICAL PHYSICS LETTERS | 2009年 / 479卷 / 1-3期

关键词：

TRANSITION-METAL NANOPARTICLES; CATALYTIC-PROPERTIES; RUTHENIUM DIOXIDE; HYDROGENATION; STABILIZATION; PRECURSOR; SURFACE; NANOCLUSTERS; DISTILLATION; CHEMISTRY;

D O I：

10.1016/j.cplett.2009.07.110

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 situ X-ray photoelectron spectroscopy analysis of Ir(0) nanoparticles (1.6 +/- 0.3 nm) dispersed in imidazolium ionic liquid (EMI,EtSO4) shows evidences of the effective interaction between the metallic clusters and the surrounding liquid. By monitoring the C 1s signal of the ionic liquid one observes a change of the binding energy in one of its components (C2) when in the presence of Ir nanoparticles. This result was corroborated by isotope labeling experiments. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：113 / 116

页数：4

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