In situ EXAFS investigation of carbon-supported Pt clusters under potential control
The transformation of carbon supported Pt clusters under potential control in 1M HClO4 solution was investigated by in-situ X-ray absorption spectroscopy measurements. Both XANES and EXAFS data are used to show the structure evolution of the Pt clusters at various potentials. It showed that the whit...
| Publié dans: | Journal of synchrotron radiation. - 1994. - 8(2001), Pt 2 vom: 01. März, Seite 484-6 |
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| Auteur principal: | |
| Autres auteurs: | , , , |
| Format: | Article |
| Langue: | English |
| Publié: |
2001
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| Accès à la collection: | Journal of synchrotron radiation |
| Sujets: | Journal Article |
| Résumé: | The transformation of carbon supported Pt clusters under potential control in 1M HClO4 solution was investigated by in-situ X-ray absorption spectroscopy measurements. Both XANES and EXAFS data are used to show the structure evolution of the Pt clusters at various potentials. It showed that the white line area and the edge energy increase with the applied potential in the range 0.1-1.5V. The coordination number of oxygen and platinum on the Pt/C electrode increases and decreases, respectively, with the applied potential. It is found that the size of Pt cluster does not grow during the electrode fabrication. However, the crystallization of Pt cluster occurs during the potential cycling |
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| Description: | Date Completed 06.09.2001 Date Revised 05.06.2019 published: Print Citation Status PubMed-not-MEDLINE |
| ISSN: | 1600-5775 |