info:eu-repo/semantics/article
Ultra-small rhenium clusters supported on graphene
Fecha
2015-03Registro en:
Miraflores, Orlando; Bonafé, Franco Paúl; Santiago, Ulises; Larios Rodriguez, Eduardo; Velázquez Salazar, Jesús J.; et al.; Ultra-small rhenium clusters supported on graphene; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 17; 12; 3-2015; 7898-7906
1463-9076
CONICET Digital
CONICET
Autor
Miraflores, Orlando
Bonafé, Franco Paúl
Santiago, Ulises
Larios Rodriguez, Eduardo
Velázquez Salazar, Jesús J.
Mariscal, Marcelo
Yacaman, Miguel José
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.