Transition metal atom doping of the basal plane of MoS₂ monolayer nanosheets for electrochemical hydrogen evolution.

ABSTRACT: Surface sites of extensively exposed basal planes of MoS₂ monolayer nanosheets, prepared via BuLi exfoliation of MoS₂, have been doped with transition metal atoms for the first time to produce 2D monolayer catalysts used for the electrochemical hydrogen evolution reaction (HER). Their HER activity is significantly higher than the corresponding thin and bulk MoS₂ layers. HAADF-STEM images show direct proof that single transition metal atoms reside at the surface basal sites, which subtly modify the electro-catalytic activity of the monolayer MoS₂, dependent on their electronic and stereospecific properties. It is found that these dopants play an important role in tuning the hydrogen adsorption enthalpies of the exposed surface S atoms and M

SUBMITTER: Lau THM 

PROVIDER: S-EPMC5975547 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature