Coverage of carbon nanotubes with titania nanoparticles for the preparation of active titania-based photocatalysts

Sakae Takenaka, Takafumi Arike, Hideki Matsune, Masahiro Kishida

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

TiO 2 nanoparticles were deposited on carbon nanotubes (CNTs) to improve their photocatalytic activity. The outer surface of the CNTs could be uniformly covered with TiO 2 nanoparticles using the hydrolysis of titanium tetraisopropoxide (Ti(O iPr) 4) in the presence of urea or glycine amide. The urea and glycine amide acted as linker molecules between the TiO 2 nanoparticles and the CNT surfaces. The TiO 2-coated CNTs showed a higher catalytic activity for the photodegradation of organic molecules than TiO 2 alone. The addition of the CNTs to the TiO 2 photocatalytic system retarded the recombination of the electron-hole pairs generated in the photo-irradiated TiO 2. When Pt metal particles were inserted in the cavities of the CNTs in the TiO 2-coated CNT catalyst system, further improvements in the photocatalytic activity were observed. The TiO 2-coated CNTs with Pt metal particles displayed a unique catalytic performance in the photocatalytic degradation of organic impurities in water.

Original languageEnglish
Pages (from-to)358-366
Number of pages9
JournalApplied Catalysis B: Environmental
Volume125
DOIs
Publication statusPublished - Aug 21 2012

Fingerprint

Carbon Nanotubes
Photocatalysts
titanium
Carbon nanotubes
Titanium
Nanoparticles
Amides
Urea
urea
Amino acids
Metals
Molecules
titanium dioxide
carbon nanotube
nanoparticle
metal
Photodegradation
photodegradation
recombination
hydrolysis

All Science Journal Classification (ASJC) codes

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

Cite this

Coverage of carbon nanotubes with titania nanoparticles for the preparation of active titania-based photocatalysts. / Takenaka, Sakae; Arike, Takafumi; Matsune, Hideki; Kishida, Masahiro.

In: Applied Catalysis B: Environmental, Vol. 125, 21.08.2012, p. 358-366.

Research output: Contribution to journalArticle

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