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

Xiaojun Lv, Hao Zhang, Haixin Chang

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    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

    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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