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Improvement in the photocatalytic activity of TiO 2 by the partial oxidation of the C impurities

  • Myoung Joo Kim
  • , Kwang Dae Kim
  • , Hyun Ook Seo
  • , Yuan Luo
  • , Nilay Kumar Dey
  • , Young Dok Kim
  • Sungkyunkwan University

Research output: Contribution to journalArticlepeer-review

Abstract

TiO 2 was treated by water in an ultrasonic bath, resulting in the enhancement of the photocatalytic activity for the decomposition of methylene blue under UV and visible light irradiation. No change in the crystallinity and optical properties of TiO 2 by the H 2 O-treatment was observed. The X-ray photoelectron spectroscopy (XPS) and FT-IR data revealed that the C impurities were oxidized by this treatment, indicating that the change in the structure of the C impurities plays a pivotal role in the photocatalytic activity of TiO 2 .

Original languageEnglish
Pages (from-to)2489-2493
Number of pages5
JournalApplied Surface Science
Volume257
Issue number7
DOIs
StatePublished - 2011

Keywords

  • Photocatalysis
  • X-ray photoelectron spectroscopy (XPS)

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