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Updated: Apr 23, 2026

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Active guests in the MoS2/MoSe2 host lattice: efficient hydrogen evolution using few-layer alloys of
Vankayala Kiran1, Debdyuti Mukherjee, Ramesh Naidu Jenjeti
1Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India. sampath@ipc.iisc.ernet.in.
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.
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