Structural alteration of nanostructure carbon particles carrying Pt clusters in H2 and O2 gases

Chihiro Kaito; Ryoichi Ono; Ryuta Sakao; Akihito Kumamoto; Midori Saito; Yuki Kimura; Shinsuke Ohyagi

doi:10.1143/JJAP.46.L1141

Structural alteration of nanostructure carbon particles carrying Pt clusters in H₂ and O₂ gases

Chihiro Kaito, Ryoichi Ono, Ryuta Sakao, Akihito Kumamoto, Midori Saito, Yuki Kimura, Shinsuke Ohyagi

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The effects of H₂ and O₂ gases on the typical fuel cell catalyst of Pt clusters on carbon particles (Pt on C) were examined using a special side-entry sample holder for high-resolution transmission electron microscopy. The holder can be used to transfer the specimen without exposure to air. The effects of H₂ and O₂ were detected after the specimen was exposed to the gases at 60 °C for 15 h. The predominant effect of H₂ was the coagulation of the Pt clusters. The effect of O ₂ was to alter the structure of the carbon particles by oxidation.

Original language	English
Pages (from-to)	L1141-L1142
Journal	Japanese Journal of Applied Physics, Part 2: Letters
Volume	46
Issue number	45-49
DOIs	https://doi.org/10.1143/JJAP.46.L1141
Publication status	Published - 2007 Dec 14
Externally published	Yes

Keywords

Amorphous carbon
Carbon particle
Catalyst
Graphitization
Heat treatment
Transmission electron microscopy

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.46.L1141

Cite this

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title = "Structural alteration of nanostructure carbon particles carrying Pt clusters in H2 and O2 gases",

abstract = "The effects of H2 and O2 gases on the typical fuel cell catalyst of Pt clusters on carbon particles (Pt on C) were examined using a special side-entry sample holder for high-resolution transmission electron microscopy. The holder can be used to transfer the specimen without exposure to air. The effects of H2 and O2 were detected after the specimen was exposed to the gases at 60 °C for 15 h. The predominant effect of H2 was the coagulation of the Pt clusters. The effect of O 2 was to alter the structure of the carbon particles by oxidation.",

keywords = "Amorphous carbon, Carbon particle, Catalyst, Graphitization, Heat treatment, Transmission electron microscopy",

author = "Chihiro Kaito and Ryoichi Ono and Ryuta Sakao and Akihito Kumamoto and Midori Saito and Yuki Kimura and Shinsuke Ohyagi",

year = "2007",

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T1 - Structural alteration of nanostructure carbon particles carrying Pt clusters in H2 and O2 gases

AU - Kaito, Chihiro

AU - Ono, Ryoichi

AU - Sakao, Ryuta

AU - Kumamoto, Akihito

AU - Saito, Midori

AU - Kimura, Yuki

AU - Ohyagi, Shinsuke

PY - 2007/12/14

Y1 - 2007/12/14

N2 - The effects of H2 and O2 gases on the typical fuel cell catalyst of Pt clusters on carbon particles (Pt on C) were examined using a special side-entry sample holder for high-resolution transmission electron microscopy. The holder can be used to transfer the specimen without exposure to air. The effects of H2 and O2 were detected after the specimen was exposed to the gases at 60 °C for 15 h. The predominant effect of H2 was the coagulation of the Pt clusters. The effect of O 2 was to alter the structure of the carbon particles by oxidation.

AB - The effects of H2 and O2 gases on the typical fuel cell catalyst of Pt clusters on carbon particles (Pt on C) were examined using a special side-entry sample holder for high-resolution transmission electron microscopy. The holder can be used to transfer the specimen without exposure to air. The effects of H2 and O2 were detected after the specimen was exposed to the gases at 60 °C for 15 h. The predominant effect of H2 was the coagulation of the Pt clusters. The effect of O 2 was to alter the structure of the carbon particles by oxidation.

KW - Amorphous carbon

KW - Carbon particle

KW - Catalyst

KW - Graphitization

KW - Heat treatment

KW - Transmission electron microscopy

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