Supported metal NPs on magnesium using SCFs for hydrogen storage: Interface and interphase characterization
| Autor: | Samuel Marre, A. Denis, E. Sellier, J.-L. Bobet, Y. Roig, M. Iturbe, Cyril Aymonier, François Cansell |
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| Přispěvatelé: | Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), Centre de Ressources en Microscopie Electronique et Microanalyse, Université de Bordeaux (UB) |
| Rok vydání: | 2010 |
| Předmět: |
Supercritical fluids Supported metal NPs
Materials science Hydrogen General Chemical Engineering Composite number chemistry.chemical_element 02 engineering and technology 010402 general chemistry 01 natural sciences Catalysis Advanced nanostructured materials Hydrogen storage X-ray photoelectron spectroscopy Physical and Theoretical Chemistry High-resolution transmission electron microscopy Interphase Magnesium Metallurgy [CHIM.MATE]Chemical Sciences/Material chemistry Interface 021001 nanoscience & nanotechnology Condensed Matter Physics Supercritical fluid 0104 chemical sciences chemistry Chemical engineering 0210 nano-technology |
| Zdroj: | Journal of Supercritical Fluids Journal of Supercritical Fluids, Elsevier, 2010, 53 (1-3), pp.102-107. ⟨10.1016/j.supflu.2010.02.012⟩ |
| ISSN: | 0896-8446 |
| DOI: | 10.1016/j.supflu.2010.02.012 |
| Popis: | International audience; Mixing catalyst NPs with magnesium was proved to be an efficient way to improve the sorption kinetics of hydrogen. Recently, as an alternative to conventional ball milling process, we have reported the interest of using the supercritical fluid chemical deposition process to deposit catalyst metal NPs on the surface of Mg crystals in order to improve significantly the material cyclability for hydrogen storage. Through a detailed characterization of the obtained composite nanostructured materials (SEM, XPS, HRTEM), we demonstrate hereafter the creation of a chemical link, through the formation of metallic interphases between the supported metal catalyst NPs and the magnesium particles, explaining potentially the improvements previously reported. Additionally, this work opens new routes towards the development of more complex materials, with a possible control of the interface between the supported NPs and their support, opening interesting perspectives, for instance in the field of catalysis. |
| Databáze: | OpenAIRE |
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