Active guests in the MoS₂/MoSe₂ host lattice: efficient hydrogen evolution using few-layer alloys of MoS_2(1−x)Se_2x

Abstract

Few-layer transition metal dichalcogenide alloys based on molybdenum sulphoselenides [MoS2(1-x)Se2x] possess higher hydrogen evolution (HER) activity compared to pristine few-layer MoS2 and MoSe2. Variation of the sulphur or selenium content in the parent dichalcogenides reveals a systematic structure-activity relationship for different compositions of alloys, and it is found that the composition MoS1.0Se1.0 shows the highest HER activity amongst the catalysts studied. The tunable electronic structure of MoS2/MoSe2 upon Se/S incorporation probably assists in the realization of high HER activity.

Three-dimensional MoS2/rGO hydrogel with extremely high double-layer capacitance as active catalyst for hydrogen evolution reaction

“…The TOF and C dl were measured according to the method reported by previous work [9,24]. All the potentials were calibrated to reversible hydrogen electrode (RHE) according to the previous report [27]. The potential transfer from SCE to RHE was obtained according to the following equation:…”

Solvent-Assisted Oxygen Incorporation of Vertically Aligned MoS2 Ultrathin Nanosheets Decorated on Reduced Graphene Oxide for Improved Electrocatalytic Hydrogen Evolution

“…6,10 All the potentials were calibrated to RHE according to the previous literature. 17 The potential transfer from SCE to RHE was obtained according to the following equation: E(RHE) = E(SCE) + 0.267 V ( Figure S1). Current density referring to the geometric surface area of the GCE was used.…”

Two-dimensional transition metal dichalcogenide alloys: preparation, characterization and applications

“…Alloying of MoS 2 with other materials (such as MoSe 2 , WS 2 ) offers the possibility to engineer H 2 affinity and hence improve the HER performance54,55,80,81 . Pt is so far the best HER catalyst.…”