Activation of nitrogen species mixed with Ar and H₂S plasma for directly N-doped TMD films synthesis.

ABSTRACT: Among the transition metal dichalcogenides (TMD), tungsten disulfide (WS₂) and molybdenum disulfide (MoS₂) are promising sulfides for replacing noble metals in the hydrogen evolution reaction (HER) owing to their abundance and good catalytic activity. However, the catalytic activity is derived from the edge sites of WS₂ and MoS₂, while their basal planes are inert. We propose a novel process for N-doped TMD synthesis for advanced HER using N₂ + Ar + H₂S plasma. The high ionization energy of Ar gas enabled nitrogen species activation results in efficient N-doping of TMD (named In situ-MoS₂ and In situ-WS₂). In situ-MoS₂ and WS₂ were characterized by various techniques (Raman spectro

SUBMITTER: Cho J 

PROVIDER: S-EPMC9209500 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature