Reactions at the interface of ultrathin Fe films deposited on ZnO(0 0 0 1) and ZnO(0 0 0−1) single crystal substrates

Effect of the Specific Surface Sites on the Reducibility of α-Fe2O3/Graphene Composites by Hydrogen

“…707 eV, significantly shifted with respect to the iron oxide peaks. 48 Therefore, we assume that the NAP-XPS and XAS signals mainly derive from the HS and the shell of the S-CS iron oxide particles because the signal of Sm-CS is attenuated by the carbon layer. Second, the oxidation state of iron deduced from the TEM experiments might be influenced by the air exposure during the transfer of the sample from the NAP-XPS to the microscope chamber.…”

“…Metallic Fe should be easily detected in the Fe 2p XPS peak, since it appears at ca. 707 eV, significantly shifted with respect to the iron oxide peaks . Therefore, we assume that the NAP-XPS and XAS signals mainly derive from the HS and the shell of the S-CS iron oxide particles because the signal of Sm-CS is attenuated by the carbon layer.…”

Characterization of Carbon-Encapsulated Nickel and Iron Nanoparticles by Means of X-ray Absorption and Photoelectron Spectroscopy

“…Figure shows the Fe 2p, Ni 2p, and C 1s X-ray photoelectron spectra of Fe@C and Ni@C. For comparison, the spectra of pure metals and oxides are shown. The spectrum of Fe metal is reproduced from the paper of Wett et al One can see that the Fe 2p and Ni 2p spectra are similar to those of pure metals. Therefore the Fe and Ni nanoparticles are characterized by the metallic state.…”

“…The spectra of metals and oxides are measured at the excitation energy of 1486.6 eV. The spectrum of the Fe metal is reproduced from the paper of Wett et al ( Microchimica Acta 156, p. 57-60; D. Wett, A. Demund, and R. Szargan; “Reactions at the interface of ultrathin Fe films deposited on ZnO(0001) and ZnO (000 21) single crystal substrates”, 2007) with permission from Springer-Verlag.…”