Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Fabrication of TiO2 Nanotube Arrays by Anodic Oxidation Method and its Photoelectrochemical Properties

양극산화법에 의한 TiO2 나노튜브 어레이의 제조 및 광전기화학적 특성에 관한 연구

  • Kim, Seon-Min (School of Materials Science and Engineering, i-cube Center & ERI, Gyeongsang National University) ;
  • Cho, Kwon-Koo (School of Materials Science and Engineering, i-cube Center & ERI, Gyeongsang National University) ;
  • Choe, Yeong-Jin (School of Materials Science and Engineering, i-cube Center & ERI, Gyeongsang National University) ;
  • Kim, Ki-Won (School of Materials Science and Engineering, i-cube Center & ERI, Gyeongsang National University) ;
  • Ryu, Kwang-Sun (Department of Chemistry, University of Ulsan)
  • 김선민 (경상대학교 나노.신소재 공학부, i-큐브 센터) ;
  • 조권구 (경상대학교 나노.신소재 공학부, i-큐브 센터) ;
  • 최영진 (경상대학교 나노.신소재 공학부, i-큐브 센터) ;
  • 김기원 (경상대학교 나노.신소재 공학부, i-큐브 센터) ;
  • 류광선 (울산대학교 화학과)
  • Received : 2010.04.14
  • Accepted : 2010.05.17
  • Published : 2010.06.28
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Abstract

Self-standing $TiO_2$ nanotube arrays were fabricated by potentiostatic anodic oxidation method using pure Ti foil as a working electrode and ethylene glycol solution as electrolytes with small addition of $NH_4F$ and $H_2O$. The influences of anodization temperature and time on the morphology and formation of $TiO_2$ nanotube arrays were investigated. The fabricated $TiO_2$ nanotube arrays were applied as a photoelectrode to dye-sensitized solar cells. Regardless of anodizing temperature and time, the average diameter and wall thickness of $TiO_2$ nanotube show a similar value, whereas the thickness show a different trend with reaction temperature. The thickness of $TiO_2$ nanotube arrays anodized at $20^{\circ}C$ and $30^{\circ}C$ was time-dependent, but on the other hand its at $10^{\circ}C$ are independent of anodization time. The conversion efficiency is low, which is due to a morphology breaking of the $TiO_2$ nanotube arrays in manufacturing process of photoelectrode.

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