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Nano Research 2019, 12(6): 1301-1305 https://doi.org/10.1007/s12274-018-2212-8
Research Article | Issue | Published: 29 May 2019

Synthesis of MoX2 (X = Se or S) monolayers with high-concentration 1T' phase on 4H/fcc-Au nanorods for hydrogen evolution

Show Author's Information Zhengqing Liu1,2,  Xiao Zhang2,  Yue Gong3,4,  Qipeng Lu2,  Zhicheng Zhang2,  Hongfei Cheng2,  Qinglang Ma2,  Junze Chen2,  Meiting Zhao2,  Bo Chen2,  Ye Chen2,  Xue-Jun Wu2,  Pengfei Yin2,  Lin Gu3,4,5( ),  Yaping Du1( ),  Hua Zhang2( )
School of Materials Science and Engineering & National Institute for Advanced Materials,Nankai University,Tianjin,300350,China;
Center for Programmable Materials,School of Materials Science and Engineering, Nanyang Technological; University, 50 Nanyang Avenue,Singapore,639798,Singapore;
Beijing National Laboratory for Condensed Matter Physics,Institute of Physics, Chinese Academy of Sciences,Beijing,100190,China;
School of Physical Sciences,University of Chinese Academy of Sciences,Beijing,100190,China;
Collaborative Innovation Center of Quantum Matter,Beijing,100190,China;
Keywords:
hydrogen evolution, MoS2 monolayers, semimetallic 1Tx phase, 4H/face-centered cubic (fcc)-Au nanorods
Topics:
Electrocatalysis HydrogenLayered semiconductorsMolybdenum compoundsMonolayersNanocompositesNanorodsSeleniumSelenium compoundsTransition metals
Cite this article:
Liu Z, Zhang X, Gong Y, et al. Synthesis of MoX2 (X = Se or S) monolayers with high-concentration 1T' phase on 4H/fcc-Au nanorods for hydrogen evolution. Nano Research, 2019, 12(6): 1301-1305. https://doi.org/10.1007/s12274-018-2212-8
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Abstract Full text Electronic supplementary material About this article

Controlled synthesis of transition metal dichalcogenide (TMD) monolayers with unusual crystal phases has attracted increasing attention due to their promising applications in electrocatalysis. However, the facile and large-scale preparation of TMD monolayers with high-concentration unusual crystal phase still remains a challenge. Herein, we report the synthesis of MoX2 (X = Se or S) monolayers with high-concentration semimetallic 1Tx phase by using the 4H/face-centered cubic (fcc)-Au nanorod as template to form the 4H/fcc-Au@MoX2 nanocomposite. The concentrations of 1Tx phase in the prepared MoSe2 and MoS2 monolayers are up to 86% and 81%, respectively. As a proof-of-concept application, the obtained Au@MoS2 nanocomposite is used for the electrocatalytic hydrogen evolution reaction (HER) in acid medium, exhibiting excellent performance with a low overpotential of 178 mV at the current density of 10 mA/cm2, a small Tafel slope of 43.3 mV/dec, and excellent HER stability. This work paves a way for direct synthesis of TMD monolayers with high-concentration of unusual crystal phase for the electrocatalytic application.


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About this article

Synthesis of MoX2 (X = Se or S) monolayers with high-concentration 1T' phase on 4H/fcc-Au nanorods for hydrogen evolution

Show Author's information Zhengqing Liu1,2, Xiao Zhang2, Yue Gong3,4, Qipeng Lu2, Zhicheng Zhang2, Hongfei Cheng2, Qinglang Ma2, Junze Chen2, Meiting Zhao2, Bo Chen2, Ye Chen2, Xue-Jun Wu2, Pengfei Yin2, Lin Gu3,4,5( ), Yaping Du1( ), Hua Zhang2( )
School of Materials Science and Engineering & National Institute for Advanced Materials,Nankai University,Tianjin,300350,China;
Center for Programmable Materials,School of Materials Science and Engineering, Nanyang Technological; University, 50 Nanyang Avenue,Singapore,639798,Singapore;
Beijing National Laboratory for Condensed Matter Physics,Institute of Physics, Chinese Academy of Sciences,Beijing,100190,China;
School of Physical Sciences,University of Chinese Academy of Sciences,Beijing,100190,China;
Collaborative Innovation Center of Quantum Matter,Beijing,100190,China;

Abstract

Controlled synthesis of transition metal dichalcogenide (TMD) monolayers with unusual crystal phases has attracted increasing attention due to their promising applications in electrocatalysis. However, the facile and large-scale preparation of TMD monolayers with high-concentration unusual crystal phase still remains a challenge. Herein, we report the synthesis of MoX2 (X = Se or S) monolayers with high-concentration semimetallic 1Tx phase by using the 4H/face-centered cubic (fcc)-Au nanorod as template to form the 4H/fcc-Au@MoX2 nanocomposite. The concentrations of 1Tx phase in the prepared MoSe2 and MoS2 monolayers are up to 86% and 81%, respectively. As a proof-of-concept application, the obtained Au@MoS2 nanocomposite is used for the electrocatalytic hydrogen evolution reaction (HER) in acid medium, exhibiting excellent performance with a low overpotential of 178 mV at the current density of 10 mA/cm2, a small Tafel slope of 43.3 mV/dec, and excellent HER stability. This work paves a way for direct synthesis of TMD monolayers with high-concentration of unusual crystal phase for the electrocatalytic application.

Keywords: hydrogen evolution, MoS2 monolayers, semimetallic 1Tx phase, 4H/face-centered cubic (fcc)-Au nanorods

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Publication history
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Acknowledgements

Publication history

Received: 27 July 2018
Revised: 14 September 2018
Accepted: 21 September 2018
Published: 29 May 2019
Issue date: June 2019

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Acknowledgements

Acknowledgements

This work was supported by MOE under AcRF Tier 2 (Nos. MOE2014-T2-2-093, MOE2015-T2-2-057, MOE2016-T2-2-103, and MOE2017-T2-1-162) and AcRF Tier 1 (Nos. 2016-T1-001-147, 2016-T1-002-051, 2017-T1-001-150, and 2017-T1-002-119), and NTU under Start-Up Grant (No. M4081296.070.500000) in Singapore. We would like to acknowledge the Facility for Analysis, Characterization, Testing and Simulation, Nanyang Technological University, Singapore, for use of their electron microscopy (and/or X-ray) facilities.

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