INFIQC 05475
INSTITUTO DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Unidad Ejecutora - UE
artículos
Título:
Ultra-small rhenium clusters supported on graphene
Autor/es:
O. MIRAFLORES; F. BANAFE; U. SANTIAGO; E. LARIO ; J. VELAZQUEZ-SALAZAR; M. M. MARISCAL; M. J. YACAMÁN
Revista:
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Editorial:
ROYAL SOC CHEMISTRY
Referencias:
Lugar: CAMBRIDGE; Año: 2015 vol. 17 p. 7898 - 7906
ISSN:
1463-9076
Resumen:
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.
