Shape-Dependent Catalytic Properties of Pt Nanoparticles

    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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