Improved photocatalytic activity of highly ordered TiO 2 nanowire arrays for methylene blue degradation

Xiaojun Lv, Hao Zhang, Haixin Chang

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Although many efforts have been done on the photocatalytic properties of anodic TiO 2 nanotubes, much less work is done on the photocatalytic performance of TiO 2 nanowires. Self-organized anodic TiO 2 nanowire arrays have been fabricated using a simple electrochemical approach and used as photocatalysts in photodegradation of methylene blue (MB) dyes. Here we found for the first time TiO 2 nanowires have better photocatalytic properties and incident photon-to-current efficiency (IPCE) than TiO 2 nanotubes. N doped TiO 2 nanowires showed further enhancement in photodegradation activity and photocurrent response in the visible region. Such TiO 2 nanowires are expected to have great potential in photodegradation of pollutants, photovoltaic solar energy conversion and water splitting for hydrogen generation as well.

Original languageEnglish
Pages (from-to)789-795
Number of pages7
JournalMaterials Chemistry and Physics
Volume136
Issue number2-3
DOIs
Publication statusPublished - 2012 Oct 15
Externally publishedYes

Keywords

  • High photocatalytic activity
  • Nitrogen doping
  • Photocurrent response
  • Photodegradation
  • TiO nanowires

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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