Structural alterations of carbon particles in saturated water vapor

Chihiro Kaito; Masayuki Shintaku; Ryuta Sakao; Akihito Kumamoto; Midori Saito; Yuki Kimura; Shinsuke Ohyagi; Shigeru Morikawa; Hitoshi Suzuki

doi:10.1143/JJAP.47.6588

Structural alterations of carbon particles in saturated water vapor

Chihiro Kaito, Masayuki Shintaku, Ryuta Sakao, Akihito Kumamoto, Midori Saito, Yuki Kimura, Shinsuke Ohyagi, Shigeru Morikawa, Hitoshi Suzuki

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

2 Citations (Scopus)

Abstract

High-resolution transmission electron microscopy (HRTEM) of carbon particles has been carried out at 80 °C in saturated water vapor, to evaluate any structural alterations. Amorphous particles or microcrystallites of carbon based on the graphitic structure were altered to more stable graphitic structures such as ribbons or onion-like structures. The stable graphitic structure was altered again to the amorphous structure. Results are interpreted in terms of the oxidation of carbon particles in air. The differences in alterations among carbon particles, Pt clusters on carbon particles, and Pt clusters in carbon particles are presented on the basis of HRTEM images.

Original language	English
Pages (from-to)	6588-6591
Number of pages	4
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	47
Issue number	8 PART 1
DOIs	https://doi.org/10.1143/JJAP.47.6588
Publication status	Published - 2008 Aug 8
Externally published	Yes

Keywords

Amorphous
Carbon particle
Catalyst
Graphitization
Heat treatment
Transmission electron microscopy

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1143/JJAP.47.6588

Cite this

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title = "Structural alterations of carbon particles in saturated water vapor",

abstract = "High-resolution transmission electron microscopy (HRTEM) of carbon particles has been carried out at 80 °C in saturated water vapor, to evaluate any structural alterations. Amorphous particles or microcrystallites of carbon based on the graphitic structure were altered to more stable graphitic structures such as ribbons or onion-like structures. The stable graphitic structure was altered again to the amorphous structure. Results are interpreted in terms of the oxidation of carbon particles in air. The differences in alterations among carbon particles, Pt clusters on carbon particles, and Pt clusters in carbon particles are presented on the basis of HRTEM images.",

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T1 - Structural alterations of carbon particles in saturated water vapor

AU - Kaito, Chihiro

AU - Shintaku, Masayuki

AU - Sakao, Ryuta

AU - Kumamoto, Akihito

AU - Saito, Midori

AU - Kimura, Yuki

AU - Ohyagi, Shinsuke

AU - Morikawa, Shigeru

AU - Suzuki, Hitoshi

PY - 2008/8/8

Y1 - 2008/8/8

N2 - High-resolution transmission electron microscopy (HRTEM) of carbon particles has been carried out at 80 °C in saturated water vapor, to evaluate any structural alterations. Amorphous particles or microcrystallites of carbon based on the graphitic structure were altered to more stable graphitic structures such as ribbons or onion-like structures. The stable graphitic structure was altered again to the amorphous structure. Results are interpreted in terms of the oxidation of carbon particles in air. The differences in alterations among carbon particles, Pt clusters on carbon particles, and Pt clusters in carbon particles are presented on the basis of HRTEM images.

AB - High-resolution transmission electron microscopy (HRTEM) of carbon particles has been carried out at 80 °C in saturated water vapor, to evaluate any structural alterations. Amorphous particles or microcrystallites of carbon based on the graphitic structure were altered to more stable graphitic structures such as ribbons or onion-like structures. The stable graphitic structure was altered again to the amorphous structure. Results are interpreted in terms of the oxidation of carbon particles in air. The differences in alterations among carbon particles, Pt clusters on carbon particles, and Pt clusters in carbon particles are presented on the basis of HRTEM images.

KW - Amorphous

KW - Carbon particle

KW - Catalyst

KW - Graphitization

KW - Heat treatment

KW - Transmission electron microscopy

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Structural alterations of carbon particles in saturated water vapor

Abstract

Keywords

ASJC Scopus subject areas

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