XPS studies of supported tungsten carbide(s)

Hydrogen generation from alkaline NaBH 4 solution using electroless-deposited Co–W–P supported on γ-Al 2 O 3

“…It is interesting to note that the W 4f 7/2 peaks around 30.0 eV for the CoeWeP/g-Al 2 O 3 catalysts can also be observed in the appearance of a shoulder in the low energy side of the valence band. This has been observed in other reports [37,38]. Fig.…”

Atomic Layer Deposition of W:Al2O3 Nanocomposite Films with Tunable Resistivity

“…The W 4f spectral region (Fig. 6b) shows peaks at 31.8 and 33.8 eV characteristic of metallic W and only a weak shoulder at ∼37 eV indicating minimal WO x 46–48. From this we conclude that the W is mostly metallic in the composite films.…”

Tungsten Carbide Microspheres as a Noble‐Metal‐Economic Electrocatalyst for Methanol Oxidation

“…13 Carbon microspheres prepared without the tungsten salt AMT, and the commercial WC (Alfa‐JM) did not chemisorb CO molecules. XPS of the W 4f doublet (4f 5/2 and 4f 7/2 ) showed peaks at 31.6 eV and 32.5 eV, arising from the presence of tungsten carbide (see Supporting Information) 14. Peaks observed at higher binding energies indicate that a part of the tungsten is present as an oxide, which probably arises from surface oxidation of W 2 C in air after preparation 15…”