Near-edge X-ray absorption fine structure study of carbon nitride films

Lenardi, Cristina; Baker, Mark; Briois, Valérie; Lecis, G. Coccia; Piseri, P.; Gissler, W.

doi:10.1016/s0257-8972(99)00585-x

Cited by 8 publications

(2 citation statements)

References 9 publications

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“…All three materials show different features in the so-called "pre-edge region" between 286 and 288 eV. Surface chemistry-specific absorption features attributed to C=O bonds at 286.5 eV [39,40] and C-H bonds at ≈287.3 eV [41,42] are present in this region. Both hydrogenated samples show an increase in C-H resonance compared to the oxidized starting material, indicating successful surface modification by both techniques.…”

Section: Nexafs Xps and Ftirmentioning

confidence: 93%

Fluorescence and Physico-Chemical Properties of Hydrogenated Detonation Nanodiamonds

Thalassinos

Stacey

Dontschuk

et al. 2020

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Hydrogenated detonation nanodiamonds are of great interest for emerging applications in areas from biology and medicine to lubrication. Here, we compare the two main hydrogenation techniques—annealing in hydrogen and plasma-assisted hydrogenation—for the creation of detonation nanodiamonds with a hydrogen terminated surface from the same starting material. Synchrotron-based soft X-ray spectroscopy, infrared absorption spectroscopy, and electron energy loss spectroscopy were employed to quantify diamond and non-diamond carbon contents and determine the surface chemistries of all samples. Dynamic light scattering was used to study the particles’ colloidal properties in water. For the first time, steady-state and time-resolved fluorescence spectroscopy analysis at temperatures from room temperature down to 10 K was performed to investigate the particles’ fluorescence properties. Our results show that both hydrogenation techniques produce hydrogenated detonation nanodiamonds with overall similar physico-chemical and fluorescence properties.

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Section: Nexafs Xps and Ftirmentioning

confidence: 93%

Fluorescence and Physico-Chemical Properties of Hydrogenated Detonation Nanodiamonds

Thalassinos

Stacey

Dontschuk

et al. 2020

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“…The peak at 286.6 eV is correlated in literature 56,57 with C1s → * ͑C w N͒ resonances, as well as some * resonances from C v O and in some cases with C v N bonding environments. 58 The resonances at 288.2 eV can be correlated with * ͑C-H͒ transitions ͑see Ref. 56͒ and with * ͑C v O͒ originating from amide groups.…”

Section: Nexafs Spectroscopymentioning

confidence: 95%

Formation and material analysis of plasma polymerized carbon nitride nanoparticles

Kovačević

Berndt

Stefanović³

et al. 2009

Journal of Applied Physics

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Structural properties of nitrogenated amorphous carbon films: Influence of deposition temperature and radiofrequency discharge power J. Appl. Phys.The effect of nitrogen incorporation on the bonding structure of hydrogenated carbon nitride films This paper deals with the analysis of nanoparticles polymerized in nitrogen/acetylene and argon/ acetylene gas mixtures in low temperature rf discharges. The polymerization process was monitored by means of mass spectroscopy. The chemical characteristics of the material were obtained in situ by infrared absorption spectroscopy and ex situ by means of near edge x-ray absorption fine structure spectroscopy. These data were supported by complimentary elemental analyses such as deuteron induced gamma emission, Rutherford backscattering, and nuclear reaction analysis. Although morphology showed no differences, further material analysis shows clearly nitrogen incorporation in the nanoparticles, mostly by multiple bonds. In comparison with the nanoparticles from argon/acetylene plasma, the amount of carbon in carbon-nitride nanoparticles remains unchanged, whereas hydrogen content strongly decreases. The results of mass spectroscopy on neutrals and ions lead to the assumption that carbon-nitride nanoparticles are formed by copolymerization of two kinds of precursors: hydrocarbon and nitrogen containing hydrocarbon species.

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