Hydrogen-graphite interaction: Experimental evidences of an adsorption barrier
| العنوان: | Hydrogen-graphite interaction: Experimental evidences of an adsorption barrier |
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| المؤلفون: | Jean-Marc Layet, Thierry Angot, E. Aréou, Gilles Cartry |
| المصدر: | The Journal of Chemical Physics. 134:014701 |
| بيانات النشر: | AIP Publishing, 2011. |
| سنة النشر: | 2011 |
| مصطلحات موضوعية: | Hydrogen, Surface Properties, Kinetics, Analytical chemistry, General Physics and Astronomy, chemistry.chemical_element, High resolution electron energy loss spectroscopy, 02 engineering and technology, Kinetic energy, 01 natural sciences, Adsorption, 0103 physical sciences, Graphite, Physical and Theoretical Chemistry, 010306 general physics, Electron energy loss spectroscopy, 021001 nanoscience & nanotechnology, Adsorption desorption kinetics, 3. Good health, chemistry, Chemical physics, 0210 nano-technology |
| الوصف: | The interaction of H atoms having relatively low average kinetic energy (∼0.025 eV) with both perfectly clean and D-covered HOPG surfaces is investigated using high resolution electron energy loss spectroscopy. From this study we confirm, in a controlled fashion, the presence of the theoretically predicted adsorption barrier since no adsorption is detected for such H atoms on HOPG. Moreover, we demonstrate that the exposure of a D saturated HOPG surface to these H atoms results in the complete removal of adatoms, with no further adsorption despite the prediction of the adsorption barrier to vanish for H dimers in para configuration. Therefore, the recombinative abstraction mechanism which competes with the adsorption process is more efficient. |
| تدمد: | 1089-7690 0021-9606 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3f39a0578a28f25050ecf6785691b8eTest https://doi.org/10.1063/1.3518981Test |
| رقم الانضمام: | edsair.doi.dedup.....e3f39a0578a28f25050ecf6785691b8e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10897690 00219606 |
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