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Hydrogen storage in Pd nanocrystals covered with a metal–organic framework

Nature Materials volume 13, pages 802–806 (2014)Cite this article

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Abstract

Hydrogen is an essential component in many industrial processes. As a result of the recent increase in the development of shale gas, steam reforming of shale gas has received considerable attention as a major source of H2, and the more efficient use of hydrogen is strongly demanded. Palladium is well known as a hydrogen-storage metal and an effective catalyst for reactions related to hydrogen in a variety of industrial processes. Here, we present remarkably enhanced capacity and speed of hydrogen storage in Pd nanocrystals covered with the metal–organic framework (MOF) HKUST-1 (copper(II) 1,3,5-benzenetricarboxylate). The Pd nanocrystals covered with the MOF have twice the storage capacity of the bare Pd nanocrystals. The significantly enhanced hydrogen storage capacity was confirmed by hydrogen pressure–composition isotherms and solid-state deuterium nuclear magnetic resonance measurements. The speed of hydrogen absorption in the Pd nanocrystals is also enhanced by the MOF coating.

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Figure 1: The composite material of Pd and HKUST-1.
Figure 2: Hydrogen absorption/desorption behaviour.
Figure 3: Kinetic properties for hydrogen absorption.
Figure 4: Solid-state 2H NMR spectra.

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Acknowledgements

Synchrotron XRD measurements were supported by the Japan Synchrotron Radiation Research Institute (JASRI; Proposal No. 2012B1516). G.L. is grateful for a PhD fellowship donated by the China Scholarship Council (CSC).

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Authors and Affiliations

  1. Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan

    Guangqin Li, Hirokazu Kobayashi, Jared M. Taylor, Ryuichi Ikeda & Hiroshi Kitagawa

  2. JST CREST, 7, Gobancho, Chiyoda-ku, Tokyo 102-0076, Japan

    Hirokazu Kobayashi, Ryuichi Ikeda, Tomokazu Yamamoto, Shoichi Toh, Syo Matsumura & Hiroshi Kitagawa

  3. Department of Physical Science, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan

    Yoshiki Kubota

  4. RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan

    Kenichi Kato & Masaki Takata

  5. Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan

    Kenichi Kato & Masaki Takata

  6. Research Laboratory of High-Voltage Electron Microscope, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan

    Tomokazu Yamamoto, Shoichi Toh & Syo Matsumura

  7. Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan

    Syo Matsumura

  8. INAMORI Frontier Research Center, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan

    Syo Matsumura & Hiroshi Kitagawa

  9. Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan

    Hiroshi Kitagawa

Authors
  1. Guangqin Li
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  2. Hirokazu Kobayashi
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  3. Jared M. Taylor
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  4. Ryuichi Ikeda
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  5. Yoshiki Kubota
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  6. Kenichi Kato
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  7. Masaki Takata
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  8. Tomokazu Yamamoto
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  9. Shoichi Toh
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  10. Syo Matsumura
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  11. Hiroshi Kitagawa
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Contributions

H.Kitagawa and H.Kobayashi designed this study. G.L. synthesized samples and performed TEM, PC isotherms, XRD and solid-state 2H NMR measurements under the supervision of R.I. and H.Kobayashi. Y.K., K.K. and M.T. assisted with the in situ synchrotron XRD measurements. T.Y., S.T. and S.M. conducted HAADF-STEM and EDX mapping. H.Kobayashi, H.Kitagawa, J.M.T. and G.L. co-wrote the manuscript. All authors contributed to writing the manuscript.

Corresponding authors

Correspondence to Hirokazu Kobayashi or Hiroshi Kitagawa.

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The authors declare no competing financial interests.

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Li, G., Kobayashi, H., Taylor, J. et al. Hydrogen storage in Pd nanocrystals covered with a metal–organic framework. Nature Mater 13, 802–806 (2014). https://doi.org/10.1038/nmat4030

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