Catalytic Hydrogen Evolution by Tungsten Disulfide at Liquid-Liquid Interfaces

WS2, which is composed of cheap and earth‐abundant elements, catalyzes the hydrogen‐evolution reaction efficiently using the organic electron‐donor decamethylferrocene. This catalytic activity has been investigated at liquid–liquid interfaces (water–1,2‐dichloroethane) by voltammetry and biphasic reactions observed by UV/Vis spectroscopy and GC. It's all about HER: WS2 is an efficient catalyst for the hydrogen‐evolution reaction using organic electron donors such as decamethylferrocene. This catalytic effect is proven by GC, UV/Vis, and cyclic voltammetry. DCE=1,2‐dichloroethane; DMFc=decamethylferrocene.