MoS2/carbon heterostructured catalysts for the hydrogen evolution reaction: N-doping modulation of substrate effects in acid and alkaline electrolytes

Unraveling the Ion Uptake Capacitive Deionization of Sea- and Highly Saline-Water by Sulfur and Nitrogen Co-Doped Porous Carbon Modified with Molybdenum Sulfide

“…The relative intensity of the D bands compared to the G bands is worthy of investigating the crystalline nanostructure of carbons. The I D /I G ratio, as a whole, was estimated to compare the degree of graphitization . As provided in Figure d, an I D /I G ratio of 0.82 was obtained for N–Cs, confirming the successful synthesis of well-ordered carbon networks.…”

“…This characteristic peak is assigned to the existence of disorders and amorphous carbons in the carbonaceous networks. The G band, arising from the in-plane E 2g stretch, emerges in the wavenumber ranging from 1560 to 1700 cm –1 . Being deeply influenced by symmetry-breaking disorders, Raman spectroscopy is a highly efficient tool for exploring defects in carbonaceous networks.…”

“…The G band, arising from the in-plane E 2g stretch, emerges in the wavenumber ranging from 1560 to 1700 cm −1 . 49 Being deeply influenced by symmetrybreaking disorders, Raman spectroscopy is a highly efficient tool for exploring defects in carbonaceous networks. The relative intensity of the D bands compared to the G bands is 51,52 The diffraction peaks observed in the spectra of MoS 2 / S,N-pCs are well-matched with the hexagonal MoS 2 layered morphology, in which the characteristic bands located at 367 and 401 cm −1 correspond to the 1 E 2g and A 1g vibration modes.…”

MXene composite with Ni/Co sulfide for enhanced hydrogen evolution reaction

“…18 The electrocatalytic activity of TMDs can be enhanced by adding a conductive material to them, which leads to variations in the DGH* and the electrical conductivity, as determined using density functional theory (DFT) calculations. 16,19 In this regard, a variety of catalyst supports, such as reduced graphene oxide, 20 multi-walled carbon nanotubes, 21 and other carbonbased materials, 22 have been investigated. However, the majority of these materials exhibit relatively low electrochemical activity and are hydrophobic, which precludes their use in aquatic conditions.…”