Active guests in the MoS2/MoSe2 host lattice: efficient hydrogen evolution using few-layer alloys of MoS2(1−x)Se2x

Vankayala Kiran; Debdyuti Mukherjee; Ramesh Naidu Jenjeti; Srinivasan Sampath

doi:10.1039/C4NR03716B

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

Vankayala Kiran,^a Debdyuti Mukherjee,^a Ramesh Naidu Jenjeti^a and Srinivasan Sampath*^a

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^a Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
E-mail: sampath@ipc.iisc.ernet.in
Fax: +91 80 23600085
Tel: +91 80 22933315

Abstract

Few-layer transition metal dichalcogenide alloys based on molybdenum sulphoselenides [MoS_2(1−x)Se_2x] 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 MoS_1.0Se_1.0 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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Article information

DOI: https://doi.org/10.1039/C4NR03716B
Article type: Paper
Submitted: 03 Jul 2014
Accepted: 15 Aug 2014
First published: 22 Aug 2014

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Nanoscale, 2014,6, 12856-12863

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

V. Kiran, D. Mukherjee, R. N. Jenjeti and S. Sampath, Nanoscale, 2014, 6, 12856 DOI: 10.1039/C4NR03716B

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