HR-EELS study of hydrogen bonding configuration, chemical and thermal stability of detonation nanodiamond films

Abstract : Nano-diamond films composed of 3–10 nm grains prepared by the detonation method and deposited onto silicon substrates by drop-casting were examined by high resolution electron energy loss spectroscopy (HR-EELS), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and secondary ion mass spectroscopy (SIMS). The impact of (i) ex-situ ambient annealing at 400 °C and (ii) ex-situ hydrogenation on hydrogen bonding and its thermal stability were examined. In order to clarify the changes in hydrogen bonding configuration detected on the different surfaces as a function of thermal annealing, in-situ hydrogenation by thermally activated atomic hydrogen was performed and examined. This study provides direct evidence that the exposure to ambient conditions and medium temperature ambient annealing have a pronounced effect on the hydrogen-carbon bonding configuration onto the nano-diamond surfaces. In-situ 1000 °C annealing results in irreversible changes of the film surface and partial nano-diamond silicidation.
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https://hal-cea.archives-ouvertes.fr/cea-01841441
Contributor : Marie-France Robbe <>
Submitted on : Tuesday, July 17, 2018 - 12:15:12 PM
Last modification on : Wednesday, September 4, 2019 - 1:40:15 PM

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Sh. Michaelson, R. Akhvlediani, T. Petit, H.A. Girard, J.C. Arnault, et al.. HR-EELS study of hydrogen bonding configuration, chemical and thermal stability of detonation nanodiamond films. Applied Surface Science, Elsevier, 2014, 305 (46-9), pp.160 - 166. ⟨10.1016/j.apsusc.2014.03.031⟩. ⟨cea-01841441⟩

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