FLOREA, Ileana; FÉRAL-MARTIN, Cédric; MAJIMEL, Jérôme; IHIAWAKRIM, Dris; HIRLIMANN, Charles; ERSEN, Ovidiu

doi:10.1021/cg301445h

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

FLOREA, Ileana
Institut de Physique et Chimie des Matériaux de Strasbourg [IPCMS]

FÉRAL-MARTIN, Cédric
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

MAJIMEL, Jérôme
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

Langue

Article de revue

Ce document a été publié dans

Crystal Growth & Design. 2013, vol. 13, n° 3, p. 1110-1121

American Chemical Society

Résumé en anglais

A detailed morphological and structural analysis of CeO2 nanoparticles has been performed using electron tomography in scanning transmission mode in high angle annular dark field. The nanoparticles have been prepared through a solvothermal synthesis assisted by microwave heating. An adequate choice of the synthesis parameters leads to particles with various well-defined morphologies: cubes, octahedrons, and nanorods. In the case of cubic CeO2 nanoparticles, the three-dimensional analysis allowed us to precisely calculate the type and the proportion of the minor facets exposed at the nanoparticle surface. For the CeO2 nanoparticles with an octahedron shape, it has been demonstrated that the ambiguous interpretation of the objects giving triangular views in classical transmission electron microscopy can be prevented; furthermore, precise assignments of their external shape, surface crystallography, and type of minor facets were realized. In the case of nanorods, it was shown that the external shape and the transversal symmetry are strongly dependent on the nanorod sizes. The presence of a well-defined porosity inside the rods was also evidenced thanks to the ability of the electron tomography to solve the internal structure of a nano-object.< Réduire

Métadonnées

Licence d’utilisation du document

Three-dimensional tomographic analyses of CeO2 nanoparticles

Langue

Ce document a été publié dans

Résumé en anglais

DOI

Origine

Unités de recherche