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

Research output: Contribution to journalArticle

3 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)211-221
Number of pages11
JournalApplied Catalysis A: General
Volume450
DOIs
Publication statusPublished - Jan 15 2013

Fingerprint

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

Cite this

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.

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

Research output: Contribution to journalArticle

@article{d44e20c65e8d4382a195f9fb2372980e,
title = "Carbon nanofiber supports for the preparation of Pt-based metal nanoparticles with high tolerance to sintering",
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.",
author = "Sakae Takenaka and Atsuro Iga and Kayoung Park and Eishi Tanabe and Hideki Matsune and Masahiro Kishida",
year = "2013",
month = "1",
day = "15",
doi = "10.1016/j.apcata.2012.10.015",
language = "English",
volume = "450",
pages = "211--221",
journal = "Applied Catalysis A: General",
issn = "0926-860X",
publisher = "Elsevier",

}

TY - JOUR

T1 - Carbon nanofiber supports for the preparation of Pt-based metal nanoparticles with high tolerance to sintering

AU - Takenaka, Sakae

AU - Iga, Atsuro

AU - Park, Kayoung

AU - Tanabe, Eishi

AU - Matsune, Hideki

AU - Kishida, Masahiro

PY - 2013/1/15

Y1 - 2013/1/15

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.

UR - http://www.scopus.com/inward/record.url?scp=84872351973&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84872351973&partnerID=8YFLogxK

U2 - 10.1016/j.apcata.2012.10.015

DO - 10.1016/j.apcata.2012.10.015

M3 - Article

VL - 450

SP - 211

EP - 221

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

SN - 0926-860X

ER -