Paper-structured fiber composites impregnated with platinum nanoparticles synthesized on a carbon fiber matrix for catalytic reduction of nitrogen oxides

Hirotaka Koga, Yuuka Umemura, Hirotake Ishihara, Takuya Kitaoka, Akihiko Tomoda, Ryo Suzuki, Hiroyuki Wariishi

Research output: Contribution to journalArticle

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Abstract

Platinum nanoparticles (PtNPs) were synthesized on surface-activated carbon fibers with high thermal conductivity, and paper-structured composites were fabricated by a papermaking technique, using the PtNPs-supported carbon fibers and ceramic fibers as matrix materials. As-prepared materials, denoted paper-structured PtNPs catalyst, possessed a unique porous microstructure derived from entangled inorganic fiber networks on which PtNPs were well dispersed. In catalytic reduction of nitrogen oxides (NOX) in the presence of methane (CH4), both of which are model exhaust gas components of combustion engines, paper-structured PtNPs catalyst demonstrated excellent NOX and CH4 removal efficiency and rapid thermal responsiveness by comparison with the PtNPs-supported carbon fibers, commercial Pt catalyst powders and a monolithic Pt-loaded honeycomb. These features of the new catalyst material are thought to arise from synergistic effects of the highly active PtNPs in association with the unique paper-like microstructure, in promoting effective transfer of heat and reactants to the active sites of the Pt nanocatalysts. The paper-structured PtNPs catalyst with paper-like practical utility is expected to be a promising catalytic material for efficient NOX gas purification.

Original languageEnglish
Pages (from-to)699-704
Number of pages6
JournalApplied Catalysis B: Environmental
Volume90
Issue number3-4
DOIs
Publication statusPublished - Aug 17 2009

Fingerprint

Nitrogen Oxides
Nitrogen oxides
nitrogen oxides
Platinum
platinum
Carbon fibers
Nanoparticles
matrix
Fibers
Composite materials
catalyst
Catalysts
microstructure
Gas fuel purification
Ceramic fibers
Microstructure
Papermaking
carbon fiber
nanoparticle
fibre

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology
  • Environmental Science(all)

Cite this

Paper-structured fiber composites impregnated with platinum nanoparticles synthesized on a carbon fiber matrix for catalytic reduction of nitrogen oxides. / Koga, Hirotaka; Umemura, Yuuka; Ishihara, Hirotake; Kitaoka, Takuya; Tomoda, Akihiko; Suzuki, Ryo; Wariishi, Hiroyuki.

In: Applied Catalysis B: Environmental, Vol. 90, No. 3-4, 17.08.2009, p. 699-704.

Research output: Contribution to journalArticle

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AU - Tomoda, Akihiko

AU - Suzuki, Ryo

AU - Wariishi, Hiroyuki

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