Facet-Dependent Catalytic Activities of Au Nanoparticles Enclosed by High-Index Facets

被引：132

作者：

Zhang, Qingfeng ^{[1
]}

Wang, Hui ^{[1
]}

机构：

[1] Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA

来源：

ACS CATALYSIS | 2014年 / 4卷 / 11期

基金：

美国国家科学基金会;

关键词：

nanocatalysis; high-index facets; Au-nanoparticles; plasmon resonances; suface-enhanced Raman spectroscopy; TRISOCTAHEDRAL GOLD NANOCRYSTALS; ENHANCED RAMAN-SPECTROSCOPY; NANOPOROUS GOLD; OXIDATION REACTIONS; CO ADSORPTION; NANOSTRUCTURES; HYDROGENATION; WAVELENGTH; RESONANCES; SCATTERING;

D O I：

10.1021/cs501445h

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：

We employed surface-enhanced Raman scattering as a noninvasive in situ spectroscopic tool to quantitatively study the intrinsic facet-dependent catalytic activities of colloidal subwavelength Au nanoparticles enclosed by various types of well-defined high-index facets using the catalytic hydrogenation of 4-nitrothiophenol as a model reaction. Our results provide compelling experimental evidence on the crucial roles of undercoordinated surface atoms in Au-based heterogeneous catalysis and shed light on the underlying relationship between the atomic-level surface structures and the intrinsic catalytic activities of Au nanocatalysts.

引用

页码：4027 / 4033

页数：7

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