Photocatalytic Activity of Metal Ion (Fe or W) Doped Titania

Sang Soo Lee, Hyun Jong Kim, Kyung Taek Jung, Hak Soo Kim, Yong-Gun Shul

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Abstract

Iron or tungsten-doped nano TiO 2 were successfully synthesized from TiCl 4 . All of the samples showed anatase phase of TiO 2 . For the iron-doped TiO 2 , Iron ion was well dispersed in the TiO 2 lattice. However, tungstendoped TiO 2 formed 12-tungstate with anatase TiO 2 . As the concentration of tungsten increased, 12-tungstate disappeared. The photocatalytic oxidation of acetaldehyde was evaluated to examine the photocatalytic characteristics of metal-doped TiO 2 . Because of the surface containing metal oxide or metal precursors at high concentration metal ion, increasing the concentration of W or Fe ion decreased the reactivity. The reaction rate was drastically increased after 300°C heat treatment. Furthermore, the photocatalytic activity of iron- or tungsten-doped TiO 2 was higher than that of synthesized pure TiO 2 and commercial TiO 2 .

Original languageEnglish
Pages (from-to)914-918
Number of pages5
JournalKorean Journal of Chemical Engineering
Volume18
Issue number6
DOIs
Publication statusPublished - 2001 Jan 1

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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