| HAL : hal-00688807, version 1 |
| DOI : 10.1007/s11051-011-0672-9 |
| Fiche détaillée | Récupérer au format |
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| Journal of Nanoparticle Research 14 (2012) 672 |
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| Cluster organization in co-sputtered carbon-platinum films as revealed by grazing incidence X-ray scattering |
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| Mathieu Mougenot 1, 2Pascal Andreazza 3 |
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| (25/01/2012) |
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| Nanostructured platinum-carbon thin films were prepared by magnetron co-sputtering method for designing efficient catalytic thin films, like fuel cells electrodes. The in-depth morphology of composite films was studied using surface sensitive X-ray techniques (grazing incidence small-angle scattering and reflectivity), consolidated by electron microscopy investigations. This study elucidates the growth mode of co-sputtered platinum-carbon thin film: 2-nm-sized platinum clusters are growing in surrounding simultaneously growing carbon columns (20-nm diameter range). In particular, the platinum cluster growth and distribution in the plane of the substrate surface are driven by surface diffusion and coalescence phenomena. Finally, this anisotropic distribution of platinum clusters correlated to the textured morphology of carbon matrix leads to a catalytic thin film morphology very suitable for electrochemical processes in fuel cell electrodes. |
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| 1 : | Groupe de recherches sur l'énergétique des milieux ionisés (GREMI) |
| CNRS : UMR6606 – Université d'Orléans | |
| 2 : | MID Dreux Innovation (MID) |
| Communauté d'Agglomération du Drouais | |
| 3 : | Centre de Recherche sur la Matière Divisée (CRMD) |
| CNRS : UMR6619 – Université d'Orléans | |
| 4 : | Conditions Extrêmes et Matériaux : Haute Température et Irradiation (CEMHTI) |
| CNRS : UPR3079 – Université d'Orléans | |
| 5 : | Synchrotron SOLEIL (SSOLEIL) |
| CNRS : UR1 | |
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| Domaine | : | Sciences de l'ingénieur/Plasmas |
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| Liste des fichiers attachés à ce document : | |||||
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| hal-00688807, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00688807 | |
| oai:hal.archives-ouvertes.fr:hal-00688807 | |
| Contributeur : Pascal Brault | |
| Soumis le : Mercredi 18 Avril 2012, 15:02:32 | |
| Dernière modification le : Mercredi 18 Avril 2012, 15:32:51 | |