Fabrication of a TiO2 photocatalyst by anodic oxidation of Ti in an acetic acid electrolyte

Yoshiteru Mizukoshi, Naoya Masahashi

研究成果: Article査読

10 被引用数 (Scopus)

抄録

We anodized Ti substrates in an aqueous acetic acid solution to produce photocatalytic TiO2 films. The TiO2 films were comprised of the anatase phase, but the crystallinity and photocatalytic activity were low, in contrast to films produced by Ti anodization in a sulfuric acid electrolyte. After annealing, the anatase film crystallized and the photocatalytic activity was greatly enhanced. For the anodizations carried out in 0.5 and 2M acetic acid, nonzero current was maintained for the duration of anodization, unlike the other concentrations. We interpret this phenomenon as the layered structure formation from the holes on the substrate surface. Highly crystallized anatase TiO2 therein was thought to mainly contribute to photocatalysis.

本文言語English
ページ(範囲)226-232
ページ数7
ジャーナルSurface and Coatings Technology
240
DOI
出版ステータスPublished - 2014 2 15

ASJC Scopus subject areas

  • 化学 (全般)
  • 凝縮系物理学
  • 表面および界面
  • 表面、皮膜および薄膜
  • 材料化学

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