Title

Shape-Dependent Catalytic Properties of Pt Nanoparticles

Authors

Authors

S. Mostafa; F. Behafarid; J. R. Croy; L. K. Ono; L. Li; J. C. Yang; A. I. Frenkel;B. R. Cuenya

Comments

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Abbreviated Journal Title

J. Am. Chem. Soc.

Keywords

GAS SHIFT CATALYSTS; MICELLE ENCAPSULATION; GOLD NANOPARTICLES; ACTIVE-SITE; OXIDATION; PLATINUM; COMBUSTION; NOBLE; DECOMPOSITION; GAMMA-AL2O3; Chemistry, Multidisciplinary

Abstract

Tailoring the chemical reactivity of nanomaterials at the atomic level is one of the most important challenges in catalysis research. In order to achieve this elusive goal, fundamental understanding of the geometric and electronic structure of these complex systems at the atomic level must be obtained. This article reports the influence of the nanoparticle shape on the reactivity of Pt nanocatalysts supported on gamma-Al(2)O(3). Nanoparticles with analogous average size distributions (similar to 0.8-1 nm), but with different shapes, synthesized by inverse micelle encapsulation, were found to display distinct reactivities for the oxidation of 2-propanol. A correlation between the number of undercoordinated atoms at the nanoparticle surface and the onset temperature for 2-propanol oxidation was observed, demonstrating that catalytic properties can be controlled through shape-selective synthesis.

Journal Title

Journal of the American Chemical Society

Volume

132

Issue/Number

44

Publication Date

1-1-2010

Document Type

Article

Language

English

First Page

15714

Last Page

15719

WOS Identifier

WOS:000283955600055

ISSN

0002-7863

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