The preparation of N-doped titanium dioxide by metallothermic reduction method and their photocatalytic activity

Takahiro Ohkubo, Takahito Akita, Hirobumi Shibata, Susumu Niwa, Katsuhiro Nishiyama, Hideki Sakai, Masahiko Abe

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

N-doped titanium dioxide (TiO 2) particles were prepared by metallothermic reduction (MTR) method and their photocatalytic activities under UV and visible light irradiation were investigated. The mixture composed of anatase-type TiO 2, Mg and NaN 3 was calcined at 600°C in nitrogen atmosphere for 1 hour. Although two types of TiO 2 particles, with low and high crystallinity, were used as starting materials, both obtained particles kept anatase-type crystalline and XPS spectra of them had peaks assigned to Ti-N bond. The absorption onset of the particles prepared from TiO 2 with low crystallinity shifted significantly from UV region to visible one. This N-doped TiO 2 particles had photocatalytic activity against oxidative degradation of gaseous 2-propanol even under visible light (> 440 nm) irradiation.

Original languageEnglish
Pages (from-to)489-494
Number of pages6
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume52
Issue number7
DOIs
Publication statusPublished - Jul 2005
Externally publishedYes

Keywords

  • Metallothermic reduction
  • N-doped titanium dioxide
  • Photoctalytic activity

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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