Photochromism-based detection of volatile organic compounds by W-doped TiO 2 nanofibers

Ming Jin, Xintong Zhang, Hongting Pu, Shunsuke Nishimoto, Taketoshi Murakami, Akira Fujishima

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

W-doped TiO 2 nanofibers with various compositions (W/Ti: 2-8%) were fabricated by the electrospinning method from respective precursor solutions containing tungsten(V) pentaethoxide, titanium tetraisopropoxide (TTIP), and polyvinylpyrrolidone (PVP), followed with calcination at 550°C. Morphological and structural characteristics of these nanofibers were studied with SEM, XRD and XPS. W-doping inhibited the crystal growth and anatase-to-rutile transformation of TiO 2 nanofibers. W-doped TiO 2 nanofiber mats showed good photocatalytic oxidation abilities for acetone. Obvious color change from white to blue of mats during the photocatalysis process can be detected by naked eyes, which provides a good way in detection of pollutants in indoor air, especially for the volatile organic compounds (VOCs).

Original languageEnglish
Pages (from-to)188-193
Number of pages6
JournalJournal of Colloid And Interface Science
Volume362
Issue number1
DOIs
Publication statusPublished - Oct 1 2011
Externally publishedYes

Keywords

  • Photocatalyst
  • Photocatalytic oxidation
  • Photochromism
  • TiO nanofiber
  • Volatile organic compounds

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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