X-ray photoelectron spectroscopy studies of laterite standard reference material

Structure and composition of the surface layer of Zr-containing fiberglass materials

“…This is quite different from the Si2p and O1s binding energies of silica. According to the literature, the Si2p and O1s binding energies for silica are in the range of 103.2-103.8 eV and 532.8-533.0, respectively [33][34][35]. For zirconium silicate, the Si2p and O1s binding energies are 101.8 and 531.8 eV, respectively [36].…”

Design of micro-shell Cu–Al porous ceramometals as catalysts for the water–gas shift reaction

“…This statement is evidenced by the binding energy of Cu 2p 3/2 equal to 935.9 eV, the intensity ratio of the main peak to shake-up satellite (0.46), and the Auger parameter equal to 1851.4 eV. [33][34][35] CuO oxide is usually characterized by a lower binding energy of Cu 2p 3/2 , in the range of 933.6-934.6 eV. 34,[36][37][38][39][40][41][42][43] This phenomenon can be attributed to the presence of subnanosized Cu-O clusters in the surface layers of ceramometals.…”

“…This position of the peak is typical for Al 3+ ions in Al 2 O 3 oxide (74.2-74.6 eV). [31][32][33][34] Additional peaks in the region of high binding energies correspond to the Cu 3p 3/2 -Cu 3p 1/2 doublet. A shi of the Cu 3p 3/2 -Cu 3p 1/2 doublet to lower binding energies and increase in their relative intensity indicate reduction of copper cations on the surface.…”

Ni–Cu High-Loaded Sol–Gel Catalysts for Dehydrogenation of Liquid Organic Hydrides: Insights into Structural Features and Relationship with Catalytic Activity

“…Note that, in this case, it is difficult to determine the chemical state of silicon via XPS. Indeed, according to the literature data, silicon in SiO 2 and in silicate structures is characterized by similar values of the Si 2p binding energy at 103.3–103.8 and 103.0–103.5 eV, respectively [ 51 , 52 , 53 , 54 , 55 ]. In contrast, the Ni 2p spectra undoubtedly indicate that nickel in the reduced catalysts is mainly in the metallic state: the spectra contain two intense narrow peaks at 853.0 and 870.2 eV, corresponding to the Ni 2p 3/2 –Ni 2p 1/2 spin–orbital doublet that is typical of metallic nickel [ 56 ].…”