Size-dependent stability of supported gold nanostructures onto ceria : an HRTEM study
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | MAJIMEL, Jérôme | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | MAJIMEL, Mélanie | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | MOOG, Iona | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | FÉRAL-MARTIN, Cédric | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | TRÉGUER-DELAPIERRE, Mona | |
| dc.date.issued | 2009 | |
| dc.identifier.issn | 1932-7447 | |
| dc.description.abstractEn | Gold nanoparticles of various sizes, supported onto ceria, were synthesized using both deposition−precipitation and coprecipitation methods. Whatever the size, the study of the Au/CeO<sub>2</sub> interface confirms the existence of two preferential orientation relationships with a dislocation network which compensates the 25% interfacial lattice mismatch. Behaviors of supported gold nanostructures under the electron beam were examined by high-resolution transmission electron microscopy (HRTEM). The thermal stability of the gold nanostructures was found to be strongly affected by the particle size. For small nanostructures (<5 nm), reversible shrinkage of gold layer by layer onto ceria surface was observed. For larger ones, a progressive and irreversible encapsulation by a CeO<sub>2−<i>x</i></sub> layer was found and a four-step process was experimentally underlined. | |
| dc.language.iso | en | |
| dc.publisher | American Chemical Society | |
| dc.subject.en | Gold | |
| dc.subject.en | Nanoparticles | |
| dc.subject.en | HRTEM | |
| dc.subject.en | Size | |
| dc.title.en | Size-dependent stability of supported gold nanostructures onto ceria : an HRTEM study | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1021/jp9001115 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Physical Chemistry C | |
| bordeaux.page | 9275-9283 | |
| bordeaux.volume | 113 | |
| bordeaux.issue | 21 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00388519 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00388519v1 | |
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