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Nano Research 2018, 11(9): 4587-4598 https://doi.org/10.1007/s12274-018-2040-x
Research Article | Issue | Published: 20 March 2018

1T@2H-MoSe2 nanosheets directly arrayed on Ti plate: An efficient electrocatalytic electrode for hydrogen evolution reaction

Show Author's Information Jingtong Zhang1,  Yalan Chen1,  Ming Liu1,  Kun Du1,  Yan Zhou1,2( ),  Yanpeng Li1,  Zhaojie Wang2,  Jun Zhang1( )
State Key Laboratory of Heavy Oil Processing China University of Petroleum (East China)Qingdao266580China
College of Science China University of Petroleum (East China)Qingdao266580China
Keywords:
nanosheets, electrocatalyst, hydrogen evolution, Ti plate
Cite this article:
Zhang J, Chen Y, Liu M, et al. 1T@2H-MoSe2 nanosheets directly arrayed on Ti plate: An efficient electrocatalytic electrode for hydrogen evolution reaction. Nano Research, 2018, 11(9): 4587-4598. https://doi.org/10.1007/s12274-018-2040-x
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Abstract Full text Electronic supplementary material About this article

Few-layered MoSe2 nanosheets with mixed 1T/2H phase were successfully arrayed on a Ti substrate (forming 1T@2H-MoSe2/Ti) through a facile one-step solvothermal process. After testing different synthesis conditions, it was found that the optimal process involves a temperature of 200 ℃ and a reaction time of 12 h. Structural characterizations reveal that the morphology of 1T@2H-MoSe2 consists of edge-terminated nanosheets with one to five layers, composed of a mixed 1T/2H phase dominated by the 1T one. The 1T@2H-MoSe2/Ti electrode shows excellent HER catalytic activity, with a small onset potential (-120 mV vs. reversible hydrogen electrode, RHE) and an electrode potential of only -133 mV (vs. RHE) to achieve a current density of 20 mA·cm-2. This excellent electrocatalytic activity is due to the synergistic effects of 1T metallic phase, few-layered nanosheet morphology, and direct growth of 1T@2H-MoSe2on the Ti substrate. In addition, the 1T@2H-MoSe2/Ti electrode shows excellent stability towards long-term electrolysis. This is due to the long-term stability of the valence states of Mo and Se, as shown by post-electrolysis X-ray photoelectron spectroscopy analysis.


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About this article

1T@2H-MoSe2 nanosheets directly arrayed on Ti plate: An efficient electrocatalytic electrode for hydrogen evolution reaction

Show Author's information Jingtong Zhang1, Yalan Chen1, Ming Liu1, Kun Du1, Yan Zhou1,2( ), Yanpeng Li1, Zhaojie Wang2, Jun Zhang1( )
State Key Laboratory of Heavy Oil Processing China University of Petroleum (East China)Qingdao266580China
College of Science China University of Petroleum (East China)Qingdao266580China

Abstract

Few-layered MoSe2 nanosheets with mixed 1T/2H phase were successfully arrayed on a Ti substrate (forming 1T@2H-MoSe2/Ti) through a facile one-step solvothermal process. After testing different synthesis conditions, it was found that the optimal process involves a temperature of 200 ℃ and a reaction time of 12 h. Structural characterizations reveal that the morphology of 1T@2H-MoSe2 consists of edge-terminated nanosheets with one to five layers, composed of a mixed 1T/2H phase dominated by the 1T one. The 1T@2H-MoSe2/Ti electrode shows excellent HER catalytic activity, with a small onset potential (-120 mV vs. reversible hydrogen electrode, RHE) and an electrode potential of only -133 mV (vs. RHE) to achieve a current density of 20 mA·cm-2. This excellent electrocatalytic activity is due to the synergistic effects of 1T metallic phase, few-layered nanosheet morphology, and direct growth of 1T@2H-MoSe2on the Ti substrate. In addition, the 1T@2H-MoSe2/Ti electrode shows excellent stability towards long-term electrolysis. This is due to the long-term stability of the valence states of Mo and Se, as shown by post-electrolysis X-ray photoelectron spectroscopy analysis.

Keywords: nanosheets, electrocatalyst, hydrogen evolution, Ti plate

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Acknowledgements

Publication history

Received: 26 September 2017
Revised: 10 February 2018
Accepted: 02 March 2018
Published: 20 March 2018
Issue date: September 2018

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

Acknowledgements

Acknowledgements

The authors thank the financial supports provided by Fundamental Research Funds for the Central Universities (No. 16CX05016A), Shandong Provincial Natural Science Foundation, China (No. ZR2017QB015), and the National Natural Science Foundation of China (Nos. 51402362 and 21471160). J. Z. gratefully acknowledges the financial support from Taishan Scholar Project.

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