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Solid-state synthesis of MoS2 nanorod from molybdenum-organic framework for efficient hydrogen evolution reaction

  • Jun-Dong Yi (伊俊东)
  • Tao-Tao Liu (刘陶陶)
  • Yuan-Biao Huang (黄远标)Email author
  • Rong Cao (曹荣)Email author
Articles
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Abstract

MoS2 is a promising candidate for catalyzing hydrogen evolution reaction (HER) due to its low cost and high activity. However, the poor conductivity and the stack of active sites of bulk MoS2 hinder its application. Herein, a new facile solid-state synthesis strategy was developed to fabricate MoS2 nanorods by one-step pyrolysis of molybdenum-organic framework (Mo-MOF) in the presence of thiourea. The obtained MoS2 keeps the Mo-MOF nanorod structure with more active sites, while the residual carbon left in the nanorod enhances the conductivity. The as-prepared MoS2 nanorods exhibit superior stability and excellent activity towards HER with a small onset potential of 96 mV and a low Tafel slope of 93 mV decade−1.

Keywords

metal-organic framework MoS2 nanorod hydrogen evolution reaction 

钼基金属有机框架为模板合成二硫化钼纳米棒用于高效电解水产氢

摘要

在电解水产氢反应(HER)中, 为了替代传统使用的价格高昂的铂基催化剂, 开发含量丰富、高效的非贵金属催化剂是近年来的研究 热点. 这其中, 二硫化钼(MoS2)由于其低廉的成本和良好的活性受到了广泛的关注. 目前, 大多数报导均使用水热法合成MoS2, 很少使用固 相法合成MoS2. 本文, 我们使用一种钼基金属有机框架作为牺牲模板, 通过一步高温固相合成得到尺寸均匀的MoS2纳米棒. 所得棒状形貌 能够有效暴露MoS2边缘活性位点, 提升HER活性. 同时, 固相合成后, 材料中仍有少量碳残留, 这些残余的碳提升了催化剂的导电性, 加速 了HER过程中的电子转移,提升了催化剂的反应活性. 因此我们合成的MoS2纳米棒表现出优异的HER性能, 拥有很小的起始电位(96 mV) 以及很低的塔菲尔斜率(93 mV dec−1). 本工作为固相合成基于MoS2的复合材料提供了一种新的思路.

Notes

Acknowledgements

We acknowledge the financial support from the National Key Research and Development Program of China (2017YFA0700100 and 2018YFA0208600), Strategic Priority Research Program of the Chinese Academy of Sciences (XDB20000000), National Natural Science Foundation of China (21671188, 21871263 and 21331006), Key Research Program of Frontier Science, CAS (QYZDJSSW- SLH045) and Youth Innovation Promotion Association, CAS (2014265).

Supplementary material

40843_2018_9393_MOESM1_ESM.pdf (4.4 mb)
Solid-state synthesis of MoS2 nanorod from molybdenum-organic framework for efficient hydrogen evolution reaction

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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Jun-Dong Yi (伊俊东)
    • 1
  • Tao-Tao Liu (刘陶陶)
    • 1
    • 2
  • Yuan-Biao Huang (黄远标)
    • 1
    • 2
    Email author
  • Rong Cao (曹荣)
    • 1
    • 2
    Email author
  1. 1.State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouChina
  2. 2.University of Chinese Academy of SciencesBeijingChina

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