Preparation of carbon nanotube-supported metal nanoparticles coated with silica layers

Sakae Takenaka, Takafumi Arike, Hideki Matsune, Eishi Tanabe, Masahiro Kishida

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

Carbon nanotube (CNT)-supported Pt metal (Pt/CNT) was covered with silica layers using hydrolysis of 3-aminopropyl-triethoxysilane (APTES) and/or tetraethoxysilane (TEOS). The hydrolysis of APTES resulted in a uniform coverage of Pt/CNT with silica layers, but the silica layers were very thin. Pt/CNT could be coated with silica layers of a few nanometers thickness by hydrolysis of TEOS, but the thickness was not uniform. In contrast, the successive hydrolysis of APTES and TEOS resulted in a uniform coverage of Pt/CNT with silica layers of a few nanometers thickness. Pt metal particles in silica-coated Pt/CNT adsorbed CO chemically despite uniform coverage of Pt metal particles with silica layers. Therefore, silica-coated Pt/CNT demonstrated high catalytic activity in methane combustion.

Original languageEnglish
Pages (from-to)345-355
Number of pages11
JournalJournal of Catalysis
Volume257
Issue number2
DOIs
Publication statusPublished - Jul 25 2008

Fingerprint

Carbon Nanotubes
Metal nanoparticles
Silicon Dioxide
Carbon nanotubes
carbon nanotubes
Silica
silicon dioxide
nanoparticles
preparation
metals
hydrolysis
Hydrolysis
Metals
metal particles
Polymers
Methane
Carbon Monoxide
catalytic activity
Catalyst activity
methane

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Physical and Theoretical Chemistry

Cite this

Preparation of carbon nanotube-supported metal nanoparticles coated with silica layers. / Takenaka, Sakae; Arike, Takafumi; Matsune, Hideki; Tanabe, Eishi; Kishida, Masahiro.

In: Journal of Catalysis, Vol. 257, No. 2, 25.07.2008, p. 345-355.

Research output: Contribution to journalArticle

Takenaka, Sakae ; Arike, Takafumi ; Matsune, Hideki ; Tanabe, Eishi ; Kishida, Masahiro. / Preparation of carbon nanotube-supported metal nanoparticles coated with silica layers. In: Journal of Catalysis. 2008 ; Vol. 257, No. 2. pp. 345-355.
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