Issue 8, 2019

Facile microwave assisted synthesis of vastly edge exposed 1T/2H-MoS2 with enhanced activity for hydrogen evolution catalysis

Abstract

Energy technologies of the near future will heavily rely on electrochemical systems; hence, the importance of research on electrocatalytically active materials can never be emphasized enough. For hydrogen evolution, precious metal catalysts (e.g. platinum) are the acclaimed performers, but recently, two-dimensional transition metal dichalcogenides (TMDs) have been receiving immense interest due to their noteworthy catalytic activity and earth-abundance. In particular, molybdenum disulfide (MoS2) in its metallic 1T-phase is known to exhibit outstanding performance; thus, utilizing 1T-MoS2 is of high interest. Here, MoS2 is synthesized via a microwave-assisted solvothermal method (MoS2-MW). Remarkably, the MoS2-MW film revealed randomly oriented flake-like grains; thus, highly active edge-sites are vastly exposed to the surface. Moreover, investigations of the film exposed the highly stable structural hybrid of the 1T- and 2H-phases, which remarkably exhibits electrocatalytic attributes of pure 1T-MoS2 with superb catalytic activity. The method allows synthesis of MoS2-MW over morphologically complex conducting substrates to increase both the number and catalytic activity of active sites for hydrogen evolution.

Graphical abstract: Facile microwave assisted synthesis of vastly edge exposed 1T/2H-MoS2 with enhanced activity for hydrogen evolution catalysis

Supplementary files

Article information

Article type
Communication
Submitted
14 Dec 2018
Accepted
25 Jan 2019
First published
28 Jan 2019

J. Mater. Chem. A, 2019,7, 3563-3569

Facile microwave assisted synthesis of vastly edge exposed 1T/2H-MoS2 with enhanced activity for hydrogen evolution catalysis

Y. B. Lee, S. K. Kim, S. Ji, W. Song, H. Chung, M. K. Choi, M. Lee, S. Myung, J. Lim, K. An and S. S. Lee, J. Mater. Chem. A, 2019, 7, 3563 DOI: 10.1039/C8TA12080C

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