Evolution of dendritic platinum nanosheets into ripening-resistant holey sheets.
Nano Lett
; 9(4): 1534-9, 2009 Apr.
Article
en En
| MEDLINE
| ID: mdl-19317480
ABSTRACT
Under electron-beam irradiation, dendritic platinum nanosheets structurally evolve into metastable "holey" nanosheets. Monte Carlo simulations of this structural transformation agree well with electron microscope images detailing the ripening process. The experiments and simulations show that nanoscale holes of a critical size are persistent and give holey sheets their morphological stability and sustained high surface area. Platinum nanostructures composed of these holey nanosheets exhibit improved durability in electrocatalytic reactions due to their remarkable ripening resistance.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Nano Lett
Año:
2009
Tipo del documento:
Article
País de afiliación:
Estados Unidos