Ultra-small rhenium clusters supported on grapheneElectronic supplementary information (ESI) available. See DOI: 10.1039/c4cp05660d

The adsorption of very small rhenium clusters (2-13 atoms) supported on graphene was studied by high-angle annular dark field-scanning transmission electron microscopy (HAADF-STEM). The atomic structure of the clusters was fully resolved with the aid of density functional theory calculations and STE...

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Main Authors: Miramontes, Orlando, Bonafé, Franco, Santiago, Ulises, Larios-Rodriguez, Eduardo, Velázquez-Salazar, Jesús J, Mariscal, Marcelo M, Yacaman, Miguel José
Format: Article
Language:English
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Summary:The adsorption of very small rhenium clusters (2-13 atoms) supported on graphene was studied by high-angle annular dark field-scanning transmission electron microscopy (HAADF-STEM). The atomic structure of the clusters was fully resolved with the aid of density functional theory calculations and STEM simulations. It was found that octahedral and tetrahedral structures work as seeds to obtain more complex morphologies. Finally, a detailed analysis of the electronic structure suggested that a higher catalytic effect can be expected in Re clusters when adsorbed on graphene than in isolated ones. In this work, the adsorption of very small rhenium clusters (2-13 atoms) supported on graphene was studied by high-angle annular dark field-scanning transmission electron microscopy (HAADF-STEM) in combination with density functional theory calculations.
ISSN:1463-9076
1463-9084
DOI:10.1039/c4cp05660d