1. Low temperature catalytic reactivity of nanodiamond in molecular hydrogen.
- Author
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Ahmed, Ashek-I-, Mandal, Soumen, Gines, Laia, Williams, Oliver A., and Cheng, Chia-Liang
- Subjects
- *
NANODIAMONDS , *LOW temperatures , *CATALYSIS , *REACTIVITY (Chemistry) , *HYDROGENATION , *DESORPTION - Abstract
In this paper, the reaction dynamics of hydrogen termination of nanodiamond annealed at low temperature (500 °C) in molecular hydrogen atmosphere is reported. In-situ residual gas analysis of nanodiamond particles (4–5 nm) during annealing/hydrogenation indicates C 3 -radical desorption which incites a free radical reaction through the reduction of molecular hydrogen to atomic hydrogen. Consequently, as released atomic hydrogen facilitates C H adsorption on the surface of nanodiamond which was confirmed using infrared spectroscopy. This explains how nanodiamond particles can play a key role in hydrogen (H 2 ) dissociation and be terminated by the hydrogen (H) at relatively low temperature. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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