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Issue 14, 2018
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Stable methylammonium-intercalated 1T′-MoS2 for efficient electrocatalytic hydrogen evolution

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Abstract

Two-dimensional layered structures have recently drawn worldwide attention because of their intriguing catalytic properties. Herein, we report 1T′-phase ammonium (A)- and methylammonium (MA)-intercalated MoS2 layered structures, synthesized by a one-step hydrothermal reaction. The MA-intercalated MoS2 exhibits excellent stability, as well as higher catalytic activity toward the hydrogen evolution reaction than the A-intercalated MoS2. First-principles calculations were used to assess the relative stabilities of the 2H and 1T′ phases, showing a trend of 2H → 1T′ phase conversion with increasing concentrations of A or MA. The calculations consistently predicted a higher stability of the MA-intercalated complex, due to reduced repulsion between the positively charged MA moieties, which underlies the excellent catalytic performance.

Graphical abstract: Stable methylammonium-intercalated 1T′-MoS2 for efficient electrocatalytic hydrogen evolution

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Publication details

The article was received on 22 Jan 2018, accepted on 07 Mar 2018 and first published on 09 Mar 2018


Article type: Communication
DOI: 10.1039/C8TA00700D
Citation: J. Mater. Chem. A, 2018,6, 5613-5617
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    Stable methylammonium-intercalated 1T′-MoS2 for efficient electrocatalytic hydrogen evolution

    I. H. Kwak, I. S. Kwon, H. G. Abbas, G. Jung, Y. Lee, J. Park and H. S. Kang, J. Mater. Chem. A, 2018, 6, 5613
    DOI: 10.1039/C8TA00700D

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