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Título: | Shape selection through epitaxy of supported platinum nanocrystals |
Autor: | Peres, Laurent; Yi, Deliang; Bustos-Rodriguez, Susana; Marcelot, Cécile; Pierrot, Alexandre; Fazzini, Pier-Francesco; Florea, Ileana; Arenal, Raúl CSIC ORCID; Macroix, Lise-Marie; Warot-Fonrose, Bénédicte; Blon, Thomas; Soulantica, Katerina | Fecha de publicación: | 2018 | Editor: | Royal Society of Chemistry (UK) | Citación: | Nanoscale 10(48): 22730-22736 (2018) | Resumen: | Supported nanocrystals of original shapes are highly desirable for the development of optimized catalysts; however, conventional methods for the preparation of supported catalysts do not allow shape control. In this work, we have synthesized concave platinum nanocubes exposing {110} crystallographic facets at 20 °C. In the presence of a crystallographically oriented Pt(111) support in the reaction medium, the concave nanocubes grow epitaxially on the support, producing macroscopic nanostructured surfaces. Higher reaction temperature produces a mixture of different nanostructures in solution; however, only the nanostructures growing along the 111 direction are obtained on the Pt(111) support. Therefore, the oriented surface acts as a template for a selective immobilization of specific nanostructures out of a mixture, which can be regarded as an "epitaxial resolution" of an inhomogeneous mixture of nanocrystals. Thus, a judicious choice of the support crystallographic orientation may allow the isolation of original nanostructures that cannot be obtained in a pure form. | Versión del editor: | https://doi.org/10.1039/c8nr07515h | URI: | http://hdl.handle.net/10261/181255 | DOI: | 10.1039/c8nr07515h | ISSN: | 2040-3364 | E-ISSN: | 2040-3372 |
Aparece en las colecciones: | (ICMA) Artículos |
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shapenano.pdf | 1,22 MB | Adobe PDF | Visualizar/Abrir |
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