Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Distribution of Anatase Phase Depending on the Thermal Treatment Temperature of Tio2 Nanotubes and Its Effects on the Photocatalytic Efficiency

Tio2 나노튜브의 열처리 온도에 따른 Anatase 상의 분포와 그에 따른 광 촉매 효율

  • Kim, Se-Im (Department of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Hwang, Ji-Hun (Department of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Lee, Seung-Wook (Department of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Kim, Rak-Kyoung (Department of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Son, Su-Min (Department of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Shaislamov, Ulugbek (Department of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Yang, Jun-Mo (National Nanofab Center, KAIST) ;
  • Yang, Bee-Lyong (Department of Materials Science and Engineering, Kumoh National Institute of Technology)
  • 김세임 (국립금오공과대학교 신소재시스템공학부 정보나노소재공학과) ;
  • 황지훈 (국립금오공과대학교 신소재시스템공학부 정보나노소재공학과) ;
  • 이승욱 (국립금오공과대학교 신소재시스템공학부 정보나노소재공학과) ;
  • 김락경 (국립금오공과대학교 신소재시스템공학부 정보나노소재공학과) ;
  • 손수민 (국립금오공과대학교 신소재시스템공학부 정보나노소재공학과) ;
  • ;
  • 양준모 (한국과학기술원 부속 대전 나노 팹 센터) ;
  • 양비룡 (국립금오공과대학교 신소재시스템공학부 정보나노소재공학과)
  • Published : 2008.06.30
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Abstract

The purpose of this study is to characterize the photo-catalytic efficiency of $TiO_2$ nanotube with respect to the distribution of anatase phase which can be changed by the annealing temperature of $TiO_2$ nanotube. $TiO_2$ nanotube was fabricated by the anodization method in the 0.5 wt% HF electrolyte. And then the $TiO_2$ nanotube was annealed at temperatures ranging from $380^{\circ}C$ to $780^{\circ}C$ in dry oxygen ambient for 2 h. For the photo-catalytic water-splitting tests, the photocurrent density was measured as a function of applied potential with a potentiostat using a Ag/AgCl reference, Pt counter electrode, and 1 M KOH electrolyte under illumination of UV by a Xe arc lamp of 1 KW. According to the UV photo-catalytic water-splitting tests, the nanotube annealed at $560^{\circ}C$ was found to show the highest photocurrent density.

Keywords

References

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