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
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