Photoelectron spectroscopy of MoS2 at the sulfur 2p absorption edge

Single-Atom Vacancy Defect to Trigger High-Efficiency Hydrogen Evolution of MoS2

“…Moreover, considering that the HER process mainly takes place on the MoS 2 nanosheet surface due to the difficulty in electron and reactive ion transport from the surface to the inner space, we take the surface S-vacancy concentration as the effective indicator. In addition, the pre-edge characteristic of the X-ray absorption near edge structure (XANES) spectra of the S L-edge in Figure e exhibits three varied peaks, which could be fitted with components of a spin–orbit split, indicative of the existence of three main transitions, with S 2p 3/2 component transition energies of 162.6, 163.8, and 164.5 eV for P-MoS 2 , respectively. , In comparison with the peaks of the P-MoS 2 , the three peaks of MoS 2 -60 s show a small shift to the lower energy side, indicating that the residual S atoms exist in an electron oversaturated form, which is in good agreement with the above-mentioned XPS results.…”

Lithium ion battery applications of molybdenum disulfide (MoS2) nanocomposites

“…These are a combination of the 4d, 5s, and 5p orbitals. 129,133,134,143 This type of orbital combination has been described as d 4 sp hybridization by the work of Pauling 147 and Hultgren. 148 On the molybdenum atom, four valence electrons primarily from the 4d orbital are responsible for the bonding to the sulfur atoms, and the remaining two valence electrons of molybdenum reside in non-bonding orbitals.…”