Fe-decorated TiO2 powder photocatalysts with enhanced visible-light-driven degradation activities

Heon Lee, Young Kwon Park, Sun Jae Kim, Byung Hoon Kim, Sang Chul Jung

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The liquid phase plasma (LPP) synthetic process was exploited to synthesize an iron oxide doped TiO2 photocatalyst (IOTP) that is sensitive to visible light. This IOTP was tested for photoactivation using ultraviolet and visible light exposure. The physical and chemical properties of the prepared IOTP powders were studied by various analysis instruments (UV–Vis spectroscopy, FESEM, HR-FETEM, HR-XPS). The band gap energy of the IOTP was found to be 2.93 eV, which was smaller than that of the bare TiO2, 3.18 eV. The IOTP synthesized in this work showed photoactivity under visible blue light. However, its photoactivity was lower than that of the bare TiO2 powder under UV light because the iron oxide precipitate acted as crystal defects, deteriorating the catalytic activity.

Original languageEnglish
Pages (from-to)1018-1023
Number of pages6
JournalSurface and Coatings Technology
Volume307
DOIs
StatePublished - 15 Dec 2016

Keywords

  • Band gap energy
  • Iron oxide particle
  • Liquid phase plasma
  • Photocatalytic activity
  • TiO

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