Shape-dependent hydrogen-storage properties in Pd nanocrystals: Which does hydrogen prefer, octahedron (111) or cube (100)?

Guangqin Li, Hirokazu Kobayashi, Shun Dekura, Ryuichi Ikeda, Yoshiki Kubota, Kenichi Kato, Masaki Takata, Tomokazu Yamamoto, Syo Matsumura, Hiroshi Kitagawa

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

Pd octahedrons and cubes enclosed by {111} and {100} facets, respectively, have been synthesized for investigation of the shape effect on hydrogen-absorption properties. Hydrogen-storage properties were investigated using in situ powder X-ray diffraction, in situ solid-state 2H NMR and hydrogen pressure-composition isotherm measurements. With these measurements, it was found that the exposed facets do not affect hydrogen-storage capacity; however, they significantly affect the absorption speed, with octahedral nanocrystals showing the faster response. The heat of adsorption of hydrogen and the hydrogen diffusion pathway were suggested to be dominant factors for hydrogen-absorption speed. Furthermore, in situ solid-state 2H NMR detected for the first time the state of 2H in a solid-solution (Pd + H) phase of Pd nanocrystals at rt.

Original languageEnglish
Pages (from-to)10222-10225
Number of pages4
JournalJournal of the American Chemical Society
Volume136
Issue number29
DOIs
Publication statusPublished - Jul 23 2014

Fingerprint

Hydrogen storage
Nanoparticles
Nanocrystals
Hydrogen
Nuclear magnetic resonance
X ray powder diffraction
Isotherms
Solid solutions
X-Ray Diffraction
Powders
Adsorption
Hot Temperature
Chemical analysis
Pressure

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Shape-dependent hydrogen-storage properties in Pd nanocrystals : Which does hydrogen prefer, octahedron (111) or cube (100)? / Li, Guangqin; Kobayashi, Hirokazu; Dekura, Shun; Ikeda, Ryuichi; Kubota, Yoshiki; Kato, Kenichi; Takata, Masaki; Yamamoto, Tomokazu; Matsumura, Syo; Kitagawa, Hiroshi.

In: Journal of the American Chemical Society, Vol. 136, No. 29, 23.07.2014, p. 10222-10225.

Research output: Contribution to journalArticle

Li, G, Kobayashi, H, Dekura, S, Ikeda, R, Kubota, Y, Kato, K, Takata, M, Yamamoto, T, Matsumura, S & Kitagawa, H 2014, 'Shape-dependent hydrogen-storage properties in Pd nanocrystals: Which does hydrogen prefer, octahedron (111) or cube (100)?', Journal of the American Chemical Society, vol. 136, no. 29, pp. 10222-10225. https://doi.org/10.1021/ja504699u
Li, Guangqin ; Kobayashi, Hirokazu ; Dekura, Shun ; Ikeda, Ryuichi ; Kubota, Yoshiki ; Kato, Kenichi ; Takata, Masaki ; Yamamoto, Tomokazu ; Matsumura, Syo ; Kitagawa, Hiroshi. / Shape-dependent hydrogen-storage properties in Pd nanocrystals : Which does hydrogen prefer, octahedron (111) or cube (100)?. In: Journal of the American Chemical Society. 2014 ; Vol. 136, No. 29. pp. 10222-10225.
@article{15314156a82b4b7eaea8db0ca2fbd6a7,
title = "Shape-dependent hydrogen-storage properties in Pd nanocrystals: Which does hydrogen prefer, octahedron (111) or cube (100)?",
abstract = "Pd octahedrons and cubes enclosed by {111} and {100} facets, respectively, have been synthesized for investigation of the shape effect on hydrogen-absorption properties. Hydrogen-storage properties were investigated using in situ powder X-ray diffraction, in situ solid-state 2H NMR and hydrogen pressure-composition isotherm measurements. With these measurements, it was found that the exposed facets do not affect hydrogen-storage capacity; however, they significantly affect the absorption speed, with octahedral nanocrystals showing the faster response. The heat of adsorption of hydrogen and the hydrogen diffusion pathway were suggested to be dominant factors for hydrogen-absorption speed. Furthermore, in situ solid-state 2H NMR detected for the first time the state of 2H in a solid-solution (Pd + H) phase of Pd nanocrystals at rt.",
author = "Guangqin Li and Hirokazu Kobayashi and Shun Dekura and Ryuichi Ikeda and Yoshiki Kubota and Kenichi Kato and Masaki Takata and Tomokazu Yamamoto and Syo Matsumura and Hiroshi Kitagawa",
year = "2014",
month = "7",
day = "23",
doi = "10.1021/ja504699u",
language = "English",
volume = "136",
pages = "10222--10225",
journal = "Journal of the American Chemical Society",
issn = "0002-7863",
publisher = "American Chemical Society",
number = "29",

}

TY - JOUR

T1 - Shape-dependent hydrogen-storage properties in Pd nanocrystals

T2 - Which does hydrogen prefer, octahedron (111) or cube (100)?

AU - Li, Guangqin

AU - Kobayashi, Hirokazu

AU - Dekura, Shun

AU - Ikeda, Ryuichi

AU - Kubota, Yoshiki

AU - Kato, Kenichi

AU - Takata, Masaki

AU - Yamamoto, Tomokazu

AU - Matsumura, Syo

AU - Kitagawa, Hiroshi

PY - 2014/7/23

Y1 - 2014/7/23

N2 - Pd octahedrons and cubes enclosed by {111} and {100} facets, respectively, have been synthesized for investigation of the shape effect on hydrogen-absorption properties. Hydrogen-storage properties were investigated using in situ powder X-ray diffraction, in situ solid-state 2H NMR and hydrogen pressure-composition isotherm measurements. With these measurements, it was found that the exposed facets do not affect hydrogen-storage capacity; however, they significantly affect the absorption speed, with octahedral nanocrystals showing the faster response. The heat of adsorption of hydrogen and the hydrogen diffusion pathway were suggested to be dominant factors for hydrogen-absorption speed. Furthermore, in situ solid-state 2H NMR detected for the first time the state of 2H in a solid-solution (Pd + H) phase of Pd nanocrystals at rt.

AB - Pd octahedrons and cubes enclosed by {111} and {100} facets, respectively, have been synthesized for investigation of the shape effect on hydrogen-absorption properties. Hydrogen-storage properties were investigated using in situ powder X-ray diffraction, in situ solid-state 2H NMR and hydrogen pressure-composition isotherm measurements. With these measurements, it was found that the exposed facets do not affect hydrogen-storage capacity; however, they significantly affect the absorption speed, with octahedral nanocrystals showing the faster response. The heat of adsorption of hydrogen and the hydrogen diffusion pathway were suggested to be dominant factors for hydrogen-absorption speed. Furthermore, in situ solid-state 2H NMR detected for the first time the state of 2H in a solid-solution (Pd + H) phase of Pd nanocrystals at rt.

UR - http://www.scopus.com/inward/record.url?scp=84904864081&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84904864081&partnerID=8YFLogxK

U2 - 10.1021/ja504699u

DO - 10.1021/ja504699u

M3 - Article

C2 - 25019951

AN - SCOPUS:84904864081

VL - 136

SP - 10222

EP - 10225

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

SN - 0002-7863

IS - 29

ER -