Raman and X-ray photoelectron spectroscopy study of carbon nitride thin films

CO2 activation and promotional effect in the oxidation of cyclic olefins over mesoporous carbon nitrides

“…Deconvolution of the N1s XPS signals also reveals a weak additional signal at 402.7 eV, indicative of amino functions carrying hydrogen (C-N-H). [34][35] The EELS spectra (Figure S4 ‡) of MCNs revealed the presence of ionization edges at ca. 284 and 401 eV corresponding to the C-K and N-K shells, respectively.…”

Nitrogen plasma pressure influence on the composition of TiNxOy sputtered films

“…The second one, at 399.25 eV, can be related to C-N bonds. 24,25 The peak centred at 401.15 eV disappears totally with Ar C and is usually assigned to chemically adsorbed nitrogen. 26,27 The last component, labelled TiN x>1 and located at ¾395.8 eV, may be attributed to nitrogen in the super-stoichiometric TiN structure.…”

Effect of nitrogen pressure on structure and optical properties of pulsed laser deposited BCN thin films

“…In spite of some discrepancy related to the hybridization between C and N discussed above, the high energy peak at ∼ 400 eV (or above) attributed to the N=C double bonds is widely accepted [8,25,28]. Moreover, the smaller component peak centered at about 399 eV can be attributed to the formation of N-C bond [8,24].…”

“…The peak C2 centered at 284.6 eV is identified as an amorphous carbon phase (C=C) or adventitious carbon in the film [14,23]. C 1s bonding energy N 285 eV is assigned to C bonded to N. However, the interpretation of the peak C3, which has been attributed to C-N bond with sp 2 hybridization [24], C-N or C≡N [25] and carbon coordinated nitrogen bonds (C-N and C=N) [26] by different authors, is controversial. Because XPS core-level shifts are not sufficient to identify hybridization of C and N, only the fact that C is bonded to N is clear.…”