Alloyed RexMo1 - xS2 Nanoflakes with Enlarged Interlayer Distances for Hydrogen Evolution

Research output: Contribution to journalResearch articleContributedpeer-review



Molybdenum sulfide (MoS2) has attracted significant attention due to its great potential as a low-cost and efficient catalyst for the hydrogen evolution reaction. Developing a facile, easily upscalable, and inexpensive approach to produce catalytically active nanostructured MoS2 with a high yield would significantly advance its practical application. Colloidal synthesis offers several advantages over other preparation techniques to overcome the low reaction yield of exfoliation and drawbacks of expensive equipment and processes used in chemical vapor deposition. In this work, we report an efficient synthesis of alloyed RexMo1-xS2 nanoflakes with an enlarged interlayer distance, among which the composition Re0.55Mo0.45S2 exhibits excellent catalytic performance with overpotentials as low as 79 mV at 10 mA/cm2 and a small Tafel slope of 42 mV/dec. Density functional theory calculations prove that enlarging the distance between layers in the RexMo1-xS2 alloy can greatly improve its catalytic performance due to a significantly reduced free energy of hydrogen adsorption. The developed approach paves the way to design advanced transition metal dichalcogenide-based catalysts for hydrogen evolution and to promote their large-scale practical application.


Original languageEnglish
Pages (from-to)9475-9483
Number of pages9
JournalACS applied nano materials
Issue number11
Publication statusPublished - 9 Jun 2023

External IDs

WOS 001012183000001


ASJC Scopus subject areas


  • colloidal synthesis, enlarged interlayer distance, hydrogen evolution reaction, improved catalytic performance, nanoflakes, ReMoS alloys, Hydrogen evolutionreaction, Nanoflakes, Re x Mo1-x S2 alloys, Improved catalytic performance, Colloidal synthesis, Enlarged interlayerdistance