| DOI | Trouver le DOI : https://doi.org/10.1021/ac050076jS0003-2700(05)00076-4 |
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| Auteur | Rechercher : Zhang, Wandong1; Rechercher : Ratcliffe, Christopher2; Rechercher : Moudrakovski, Igor2; Rechercher : Mou, C-Y; Rechercher : Ripmeester, John2 |
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| Affiliation | - Conseil national de recherches Canada. Institut des sciences biologiques du CNRC
- Conseil national de recherches Canada. Institut Steacie des sciences moléculaires du CNRC
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| Format | Texte, Article |
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| Résumé | The distribution of gallium nanocrystals in mesoporous MCM-41 host were analyzed by continuous-flow hyperpolarized 129Xe NMR spectroscopy. In contrast to unclear TEM images for the high metal contents, laser-polarized 129Xe probe can detect the whole distribution of gallium in the MCM-41 host. It is found that gallium nanocrystals are included in the mesochannels of MCM-41; a part of them also remains in the interparticle voids. The distribution of gallium metal in MCM-41 is heterogeneous. Not all the mesochannels host metallic gallium even at a high gallium loading of 65.1 wt %. Variable temperature measurements can provide information on the xenon adsorption parameters. This approach opens a sensitive way to probe the distribution of high content species in porous host materials. |
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| Date de publication | 2005-05-15 |
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| Dans | |
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| Numéro NPARC | 12338345 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 5d02d2b4-57d1-4b6a-a202-cb82b2d522fe |
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| Enregistrement créé | 2009-09-10 |
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| Enregistrement modifié | 2020-04-07 |
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