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Article dans une revue
Surface chemical modifications and surface reactivity of nanodiamonds hydrogenated by CVD plasma
Abstract : The present study focuses on the interaction of hydrogen microwave CVD plasma with nanodiamonds (NDs). Hydrogen treated NDs (H-NDs) were characterized using electron spectroscopies (XPS, AES) without air exposure. A surface temperature higher than 700 °C is needed to remove the oxygen present on raw NDs. The kinetics of oxygen removal were investigated. Moreover, UHV annealings of H-NDs after ageing in ambient air clearly underline that 75% of the oxygen is related to physisorbed species. Finally, H-NDs were efficiently grafted using photochemical reaction with alkenes and a spontaneous coupling of aryldiazonium salts. These results confirm similar electronic surface properties between bulk and nano diamond materials.
https://hal-mines-paristech.archives-ouvertes.fr/hal-01271867
Contributeur : Bibliothèque Umr7633 <>
Soumis le : mardi 9 février 2016 - 17:03:54
Dernière modification le : jeudi 24 septembre 2020 - 18:30:07
Contributeur : Bibliothèque Umr7633 <>
Soumis le : mardi 9 février 2016 - 17:03:54
Dernière modification le : jeudi 24 septembre 2020 - 18:30:07