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- 양극산화법에 의한 TiO2 나노튜브 어레이의 제조 및 광전기화학적 특성에 관한 연구
- 김선민, 조권구, 최영진, 김기원, 류광선
- Fabrication of TiO2 Nanotube Arrays by Anodic Oxidation Method and its Photoelectrochemical Properties
- Seon-Min Kim, Kwon-Koo Cho, Yeong-Jin Choe, Ki-Won Kim, Kwang-Sun Ryu
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Journal of Korean Powder Metallurgy Institute 2010;17(3):216-222
DOI: https://doi.org/10.4150/KPMI.2010.17.3.216
2경상대학교 나노.신소재 공학부, i-큐브 센터
3경상대학교 나노.신소재 공학부, i-큐브 센터
4경상대학교 나노.신소재 공학부, i-큐브 센터
5울산대학교 화학과
1School of Materials Science and Engineering, i-cube Center & ERI, Gyeongsang National University
2School of Materials Science and Engineering, i-cube Center & ERI, Gyeongsang National University
3School of Materials Science and Engineering, i-cube Center & ERI, Gyeongsang National University
4School of Materials Science and Engineering, i-cube Center & ERI, Gyeongsang National University
5Department of Chemistry, University of Ulsan
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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°C and 30°C was time-dependent, but on the other hand its at 10°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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