Facet-Dependent Catalytic Activities of Au Nanoparticles Enclosed by High-Index Facets
ACS Catalysis2014Vol. 4(11), pp. 4027–4033
Citations Over TimeTop 10% of 2014 papers
Abstract
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.
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