Generalized molybdenum oxide surface chemical state XPS determination via informed amorphous sample model

Design of Mixed‐Metal Silver Decamolybdate Nanostructures for High Specific Energies at High Power Density

“…Field-emission scanning electron microscopy (FESEM) analysis, Figure 1d, revealed that the as-annealed (at 455 °C) product stabilizes in nanorodlike morphology; a magnified view of the nanorods can be seen in the inset of Figure 1d (Figure 2d), which is attributed to oxygen in MoO 3 at 530.42 eV, fits nicely to the expected value of this species at 530.45 eV. This is in accordance to a very recent and detailed XPS analysis of Baltrusaitis et al on molybdenum oxides and this was used as an energy reference, [44] and corresponds to similar results from Scanlon et al [45] Due to spin-orbit splitting, the high-resolution spectrum of Mo (Figure 2b) contains three pairs of peaks separated by the splitting energy of 3.14 eV. [45] The strongest signal at a 3d 5 .…”

Novel Pt Electrocatalysts: Multifunctional Composite Supports for Enhanced Corrosion Resistance and Improved CO Tolerance

“…As it was described in our earlier works [40,41] [55]) and as a broad band with leading peak at 230.0 eV (Mo 4+ , [56,57]), respectively. In this work, the Mo 3d core level spectrum from Mo 4+ species was modelled by a complex line shape consisting of a combination of a narrower and a broad spinorbit splitted doublet representing differently screened final states, with the most intense contribution between 229-230 eV [56,57].…”

Effect of Mo incorporation on the electrocatalytic performance of Ti–Mo mixed oxide–carbon composite supported Pt electrocatalysts

“…3 the Mo 3d spectra of the three samples are compared. All spectra are dominated by a strong peak pair located around 232.5 and 235.6 eV binding energy; these contributions arise from the Mo 3d 5/2 -3/2 spin-orbit doublet of Mo 6+ (MoO 3 ) [32]. Apart from this, a pronounced asymmetry on the low binding energy side of the spectra indicate the presence of Mo ions in lower oxidation state as well.…”

“…According to the literature, the Mo 5+ ionic state is expected to give a peak pair around 231 eV [32]. The Mo 4+ ionic state, on the other hand, is characterized by a more complex 3d spectrum consisting of a combination of a narrower and a broad spin-orbit splitted doublet with the most intense contribution between 229-230 eV [33,34]; the two peak pairs represent differently screened final states.…”