Carbon nanofiber supports for the preparation of Pt-based metal nanoparticles with high tolerance to sintering

Sakae Takenaka, Atsuro Iga, Kayoung Park, Eishi Tanabe, Hideki Matsune, Masahiro Kishida

研究成果: ジャーナルへの寄稿記事

3 引用 (Scopus)

抄録

Fishbone-typed carbon nanofibers (CNFs) that were formed by methane decomposition over silica-supported Ni catalysts were used as catalytic supports for Pt or Pt-Co alloy nanoparticles. The treatment of CNFs with concentrated HNO3 led to the formation of porous structures as well as to the introduction of oxygen-containing functional groups. Pt metal particles of a few nanometers in diameter could be stabilized on the CNFs treated with HNO 3 and showed a high tolerance to sintering at high temperatures, whereas Pt metal particles supported on the CNFs without any treatment were seriously aggregated at high temperatures. The porous structures and functional groups in the CNFs worked as anchoring sites for Pt metal nanoparticles. Thus, Pt-Co alloy particles of a few nanometers in diameter could be prepared by using the CNF support since the CNFs inhibited the sintering of the alloy particles during the treatment at high temperatures to allow for alloy formation.

元の言語英語
ページ(範囲)211-221
ページ数11
ジャーナルApplied Catalysis A: General
450
DOI
出版物ステータス出版済み - 1 15 2013

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Carbon nanofibers
Metal nanoparticles
Sintering
Functional groups
Metals
Methane
Catalyst supports
Silicon Dioxide
Temperature
Silica
Oxygen
Nanoparticles
Decomposition
Catalysts

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology

これを引用

Carbon nanofiber supports for the preparation of Pt-based metal nanoparticles with high tolerance to sintering. / Takenaka, Sakae; Iga, Atsuro; Park, Kayoung; Tanabe, Eishi; Matsune, Hideki; Kishida, Masahiro.

:: Applied Catalysis A: General, 巻 450, 15.01.2013, p. 211-221.

研究成果: ジャーナルへの寄稿記事

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abstract = "Fishbone-typed carbon nanofibers (CNFs) that were formed by methane decomposition over silica-supported Ni catalysts were used as catalytic supports for Pt or Pt-Co alloy nanoparticles. The treatment of CNFs with concentrated HNO3 led to the formation of porous structures as well as to the introduction of oxygen-containing functional groups. Pt metal particles of a few nanometers in diameter could be stabilized on the CNFs treated with HNO 3 and showed a high tolerance to sintering at high temperatures, whereas Pt metal particles supported on the CNFs without any treatment were seriously aggregated at high temperatures. The porous structures and functional groups in the CNFs worked as anchoring sites for Pt metal nanoparticles. Thus, Pt-Co alloy particles of a few nanometers in diameter could be prepared by using the CNF support since the CNFs inhibited the sintering of the alloy particles during the treatment at high temperatures to allow for alloy formation.",
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AU - Takenaka, Sakae

AU - Iga, Atsuro

AU - Park, Kayoung

AU - Tanabe, Eishi

AU - Matsune, Hideki

AU - Kishida, Masahiro

PY - 2013/1/15

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N2 - Fishbone-typed carbon nanofibers (CNFs) that were formed by methane decomposition over silica-supported Ni catalysts were used as catalytic supports for Pt or Pt-Co alloy nanoparticles. The treatment of CNFs with concentrated HNO3 led to the formation of porous structures as well as to the introduction of oxygen-containing functional groups. Pt metal particles of a few nanometers in diameter could be stabilized on the CNFs treated with HNO 3 and showed a high tolerance to sintering at high temperatures, whereas Pt metal particles supported on the CNFs without any treatment were seriously aggregated at high temperatures. The porous structures and functional groups in the CNFs worked as anchoring sites for Pt metal nanoparticles. Thus, Pt-Co alloy particles of a few nanometers in diameter could be prepared by using the CNF support since the CNFs inhibited the sintering of the alloy particles during the treatment at high temperatures to allow for alloy formation.

AB - Fishbone-typed carbon nanofibers (CNFs) that were formed by methane decomposition over silica-supported Ni catalysts were used as catalytic supports for Pt or Pt-Co alloy nanoparticles. The treatment of CNFs with concentrated HNO3 led to the formation of porous structures as well as to the introduction of oxygen-containing functional groups. Pt metal particles of a few nanometers in diameter could be stabilized on the CNFs treated with HNO 3 and showed a high tolerance to sintering at high temperatures, whereas Pt metal particles supported on the CNFs without any treatment were seriously aggregated at high temperatures. The porous structures and functional groups in the CNFs worked as anchoring sites for Pt metal nanoparticles. Thus, Pt-Co alloy particles of a few nanometers in diameter could be prepared by using the CNF support since the CNFs inhibited the sintering of the alloy particles during the treatment at high temperatures to allow for alloy formation.

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