Synthesis of effective titania nanotubes for wastewater purification

  • Han Jun Oh
  • , Jong Ho Lee
  • , Young Jig Kim
  • , Su Jeong Suh
  • , Jun Hee Lee
  • , Choong Soo Chi

Research output: Contribution to journalArticlepeer-review

68 Scopus citations

Abstract

In order to synthesize a self-organized, TiO2 nanotubular layer for wastewater purification, anodizations were performed at constant applied potential in hydrofluoric acid and the anodic TiO2 layer was heat treated. The anodic nanotube arrays were also influenced by the applied anodic potentials and HF concentrations. The anodic TiO2 nanotubular structured film with various morphologies and crystal structures can be synthesized by proper electrochemical anodization and additional annealing treatment. The photocatalytic efficiencies were maximized for the anatase-type, TiO2 nanotubular layer which was prepared by annealing at 550 °C.

Original languageEnglish
Pages (from-to)142-147
Number of pages6
JournalApplied Catalysis B: Environmental
Volume84
Issue number1-2
DOIs
StatePublished - 25 Oct 2008

Keywords

  • Anatase
  • Aniline blue
  • Anodization
  • Photocatalyst
  • Titania nanotube

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