Structural and characteristic variation of anodic oxide on pure Ti with anodization duration

Yoshiteru Mizukoshi, Naofhumi Ohtsu, Naoya Masahashi

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Change in the structural and characteristic of the anodic oxide on pure Ti with the duration of anodization time was investigated. With the progress of the anodization, the phase of the formed TiO 2 successively changed from anatase phase to rutile phase. In the transition process, peak intensities of rutile TiO 2 1 0 1, 1 1 1 and 2 1 1 planes of X-ray diffraction characteristically increased. The contact angles of water droplets on the anodize TiO 2 were monotonously decreased with the progress of the anodization except on the characteristically oriented rutile surface. In the evaluations of acetaldehyde photocatalysis under UV illumination, the anatase TiO 2 anodized for short period exhibited high activities. On the other hand, when illuminated with visible light (>422 nm), rutile-structured TiO 2 formed by anodization with a long duration exhibited superior photocatalytic activities probably due to high rutile fraction and sulfur incorporation from the electrolyte.

Original languageEnglish
Pages (from-to)1018-1023
Number of pages6
JournalApplied Surface Science
Volume283
DOIs
Publication statusPublished - 2013 Oct 15

Keywords

  • Anodization
  • Photocatalyst
  • Visible light response
  • XPS

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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