Visible-light photocatalytic activity of TiO 2-x by heat treatment and plasma-heat treatment

Yoon Keun Chae, Jin Won Park, Shinsuke Mori, Masaaki Suzuki

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Abstract

The partial reduction of TiO 2 was attempted by heat treatment and plasma-heat treatment and it was carried out to investigate the photocatalytic characteristics of partially reduced TiO 2 (TiO 2-x) in the visible-light region. As a result, the plasma-heat treatment shows significantly stronger than the heat treatment for the visible-light photocatalytic activity of TiO 2. The red-shifted absorption bands in the visible-light region of TiO 2-x by plasma-heat treatment gave broader than one by heat treatment. The TiO 2-x by heat treatment and plasma-heat treatment was changed white to beige color, and white to navy, respectively.

Original languageEnglish
Pages (from-to)1237-1241
Number of pages5
JournalJournal of Industrial and Engineering Chemistry
Volume18
Issue number4
DOIs
Publication statusPublished - 2012 Jul 25

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All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

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