Steps, Ledges, and Kinks on the Surfaces of Platinum Nanoparticles of Different Shapes.

Platinum nanoparticles with a high percentage of cubic-, tetrahedral- and octahedral-like shapes, respectively, have been synthesized by a shape-controlling technique that we developed recently [Ahmadi et al., Science 272 (June 1996) 1924]. High resolution transmission electron microscopy (HRTEM) is used here to directly image the atomic scale structures of the surfaces of these particles with different shapes. The truncated shapes of these particles are mainly defined by the {100}, {111}, and {110} facets, on which numerous atom-high surface steps, ledges and kinks have been observed. This atomic-scale fine structure of the surfaces of these particles is expected to play a critical role in their catalytic activity and selectivity. (C) 1997 Elsevier Science B.V.

Main Author: Wang, Z. L.
Other Authors: Ahmad, T. S., El-Sayed, M. A.
Language: English
Published: 1997
Online Access: http://ezproxy.villanova.edu/login?url=https://digital.library.villanova.edu/Item/vudl:173020
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dc_source_str_mv Surface Science 380(2-3), May 15, 1997, 302-310.
author Wang, Z. L.
author_facet_str_mv Wang, Z. L.
Ahmad, T. S.
El-Sayed, M. A.
author_or_contributor_facet_str_mv Wang, Z. L.
Ahmad, T. S.
El-Sayed, M. A.
author_s Wang, Z. L.
spellingShingle Wang, Z. L.
Steps, Ledges, and Kinks on the Surfaces of Platinum Nanoparticles of Different Shapes.
author-letter Wang, Z. L.
author_sort_str Wang, Z. L.
author2 Ahmad, T. S.
El-Sayed, M. A.
author2Str Ahmad, T. S.
El-Sayed, M. A.
dc_title_str Steps, Ledges, and Kinks on the Surfaces of Platinum Nanoparticles of Different Shapes.
title Steps, Ledges, and Kinks on the Surfaces of Platinum Nanoparticles of Different Shapes.
title_short Steps, Ledges, and Kinks on the Surfaces of Platinum Nanoparticles of Different Shapes.
title_full Steps, Ledges, and Kinks on the Surfaces of Platinum Nanoparticles of Different Shapes.
title_fullStr Steps, Ledges, and Kinks on the Surfaces of Platinum Nanoparticles of Different Shapes.
title_full_unstemmed Steps, Ledges, and Kinks on the Surfaces of Platinum Nanoparticles of Different Shapes.
collection_title_sort_str steps, ledges, and kinks on the surfaces of platinum nanoparticles of different shapes.
title_sort steps, ledges, and kinks on the surfaces of platinum nanoparticles of different shapes.
description Platinum nanoparticles with a high percentage of cubic-, tetrahedral- and octahedral-like shapes, respectively, have been synthesized by a shape-controlling technique that we developed recently [Ahmadi et al., Science 272 (June 1996) 1924]. High resolution transmission electron microscopy (HRTEM) is used here to directly image the atomic scale structures of the surfaces of these particles with different shapes. The truncated shapes of these particles are mainly defined by the {100}, {111}, and {110} facets, on which numerous atom-high surface steps, ledges and kinks have been observed. This atomic-scale fine structure of the surfaces of these particles is expected to play a critical role in their catalytic activity and selectivity. (C) 1997 Elsevier Science B.V.
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dc.title Steps, Ledges, and Kinks on the Surfaces of Platinum Nanoparticles of Different Shapes.
dc.creator Wang, Z. L.
Ahmad, T. S.
El-Sayed, M. A.
dc.description Platinum nanoparticles with a high percentage of cubic-, tetrahedral- and octahedral-like shapes, respectively, have been synthesized by a shape-controlling technique that we developed recently [Ahmadi et al., Science 272 (June 1996) 1924]. High resolution transmission electron microscopy (HRTEM) is used here to directly image the atomic scale structures of the surfaces of these particles with different shapes. The truncated shapes of these particles are mainly defined by the {100}, {111}, and {110} facets, on which numerous atom-high surface steps, ledges and kinks have been observed. This atomic-scale fine structure of the surfaces of these particles is expected to play a critical role in their catalytic activity and selectivity. (C) 1997 Elsevier Science B.V.
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