Changeover of the thermodynamic behavior for hydrogen storage in Rh with increasing nanoparticle size

Kohei Kusada; Hirokazu Kobayashi; Ryuichi Ikeda; Hitoshi Morita; Hiroshi Kitagawa

doi:10.1246/cl.2013.55

Changeover of the thermodynamic behavior for hydrogen storage in Rh with increasing nanoparticle size

Kohei Kusada, Hirokazu Kobayashi, Ryuichi Ikeda, Hitoshi Morita, Hiroshi Kitagawa

Research output: Contribution to journal › Review article › peer-review

10 Citations (Scopus)

Abstract

We first report the hydrogen storage properties of Rh nanoparticles having a diameter over 10nm and the change in the temperature dependences of hydrogen storage based on particle sizes of Rh nanoparticles. Hydrogen storage was investigated by hydrogen pressurecomposition isotherm and solid-state ²HNMR measurements. We demonstrate that Rh nanoparticles with dimensions of ca. 10nm absorb hydrogen similar to smaller Rh nanoparticles; however, the enthalpy of hydrogen storage in Rh nanoparticles is changed from exothermic to endothermic with increasing particle size, with a critical size between 7.1 and 10.5 nm. The thermodynamics of hydrogen storage in Rh can be tuned by controlling the particle size.

Original language	English
Pages (from-to)	55-56
Number of pages	2
Journal	Chemistry Letters
Volume	42
Issue number	1
DOIs	https://doi.org/10.1246/cl.2013.55
Publication status	Published - Jan 2013
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemistry(all)

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10.1246/cl.2013.55

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title = "Changeover of the thermodynamic behavior for hydrogen storage in Rh with increasing nanoparticle size",

abstract = "We first report the hydrogen storage properties of Rh nanoparticles having a diameter over 10nm and the change in the temperature dependences of hydrogen storage based on particle sizes of Rh nanoparticles. Hydrogen storage was investigated by hydrogen pressurecomposition isotherm and solid-state 2HNMR measurements. We demonstrate that Rh nanoparticles with dimensions of ca. 10nm absorb hydrogen similar to smaller Rh nanoparticles; however, the enthalpy of hydrogen storage in Rh nanoparticles is changed from exothermic to endothermic with increasing particle size, with a critical size between 7.1 and 10.5 nm. The thermodynamics of hydrogen storage in Rh can be tuned by controlling the particle size.",

author = "Kohei Kusada and Hirokazu Kobayashi and Ryuichi Ikeda and Hitoshi Morita and Hiroshi Kitagawa",

year = "2013",

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doi = "10.1246/cl.2013.55",

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T1 - Changeover of the thermodynamic behavior for hydrogen storage in Rh with increasing nanoparticle size

AU - Kusada, Kohei

AU - Kobayashi, Hirokazu

AU - Ikeda, Ryuichi

AU - Morita, Hitoshi

AU - Kitagawa, Hiroshi

PY - 2013/1

Y1 - 2013/1

N2 - We first report the hydrogen storage properties of Rh nanoparticles having a diameter over 10nm and the change in the temperature dependences of hydrogen storage based on particle sizes of Rh nanoparticles. Hydrogen storage was investigated by hydrogen pressurecomposition isotherm and solid-state 2HNMR measurements. We demonstrate that Rh nanoparticles with dimensions of ca. 10nm absorb hydrogen similar to smaller Rh nanoparticles; however, the enthalpy of hydrogen storage in Rh nanoparticles is changed from exothermic to endothermic with increasing particle size, with a critical size between 7.1 and 10.5 nm. The thermodynamics of hydrogen storage in Rh can be tuned by controlling the particle size.

AB - We first report the hydrogen storage properties of Rh nanoparticles having a diameter over 10nm and the change in the temperature dependences of hydrogen storage based on particle sizes of Rh nanoparticles. Hydrogen storage was investigated by hydrogen pressurecomposition isotherm and solid-state 2HNMR measurements. We demonstrate that Rh nanoparticles with dimensions of ca. 10nm absorb hydrogen similar to smaller Rh nanoparticles; however, the enthalpy of hydrogen storage in Rh nanoparticles is changed from exothermic to endothermic with increasing particle size, with a critical size between 7.1 and 10.5 nm. The thermodynamics of hydrogen storage in Rh can be tuned by controlling the particle size.

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DO - 10.1246/cl.2013.55

M3 - Review article

AN - SCOPUS:84871810068

SN - 0366-7022

VL - 42

SP - 55

EP - 56

JO - Chemistry Letters

JF - Chemistry Letters

IS - 1

ER -

Changeover of the thermodynamic behavior for hydrogen storage in Rh with increasing nanoparticle size

Abstract

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