Thermal decomposition of surfactant coatings on Co and Ni nanocrystals
Autor: | J. L. McChesney, V. Perez-Dieste, C. B. Murray, J.-L. Lin, A. Kirakosian, Mark A. Eriksson, J. N. Crain, O. M. Castellini, F. J. Himpsel, Charles T. Black |
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Rok vydání: | 2003 |
Předmět: | |
Zdroj: | Applied Physics Letters. 83:5053-5055 |
ISSN: | 1077-3118 0003-6951 |
DOI: | 10.1063/1.1633971 |
Popis: | The pathway for thermal decomposition of an oleic acid surfactant protecting Co and Ni nanocrystals is identified by probing the relevant molecular orbitals with x-ray absorption spectroscopy. The two steps observed previously in thermogravimetric measurements are identified with thermal desorption of entire molecules at ≈200 °C and dehydrogenation at ≈400 °C, which leaves a graphitic surface with alkane fragments underneath. |
Databáze: | OpenAIRE |
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