Spectres de photoélectrons X de composés solides de cuivre Relation entre la présence de raies satellites et l'état d'oxydation du cuivre

Abstract

L'étude comparative des spectres de photoélectrons X de composés de cuivre I et II, ainsi que l'examen des modifications apparaissant au niveau des raies du cuivre et de l'oxygène dans les composés de cuivre I suite à l'action de gaz actifs (O2, H2O), indiquent que la structure satellite adjacente aux raies du cuivre est spécifique de l'ion cuivrique.

Photocatalytic degradation of methylene blue (MB) with Cu1–ZnO single atom catalysts on graphene-coated flexible substrates

“…1e, the 2p 3/2 binding energy of Cu is close to that of the Cu( ii ) oxidation state, as reported before. 34,35 These binding energies are also consistent with the statistically averaged ones of Cu 1+ (932.4 eV) and Cu 2+ (933.3 eV) from the NIST XPS database (Fig. 1e).…”

“…34–36 Therefore, one can deduce that Cu exists as ionic Cu( ii ) single atoms on ZnO, unlike that in bulk copper. 35 The binding energies at around 1020.3 eV and 1043.4 eV correspond to 2p 3/2 and 2p 1/2 levels of Zn 2+ ions (Fig. 1f).…”

Investigation on microwave absorption properties of CuO/Cu2O-coated Ni nanocapsules as wide-band microwave absorbers

“…1d. The shell of the nanocapsules can be determined as CuO from the binding energy peaks of 933.4 eV, 934.1 eV and 935.0 eV [20][21][22] and as Cu 2 O from the binding energy peaks of 932.0 eV and 932.5 eV, 23,24 using the Lorentzian-Gaussian product function. 25 The phenomena above can be ascribed to the formation mechanism of the nanocapsules, i.e., the different evaporating pressures and melting points for the Ni and Cu atoms, during the arc discharging process.…”

Aerosol‐Assisted Chemical Vapour Deposition of a Copper Gallium Oxide Spinel

“…The binding energy of Cu 2p 3/2 was 934.9 and 933.0 eV corresponding to Cu II and Cu I , respectively 39. 40 Furthermore, a satellite peak characteristic of Cu II was observed at 940–946 eV 6. 39 The Cu II /Cu I ratio calculated by comparing the corrected area under the Cu II 2p 3/2 (including satellite area) and Cu I 2p 3/2 peaks was found to be 1:0.6.…”