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J. Korean Ceram. Soc. > Volume 37(7); 2000 > Article
Journal of the Korean Ceramic Society 2000;37(7): 700.
Nanotube형 $TiO_2$ 분말의 제조
서동석, 이종국, 김환1
조선대학교 재료공학과 B.K 21, 핵심분야 지능재료 개발 및 산업화 사업단
1서울대학교 재료공학부
Preparation of Nanotube-shaped $TiO_2$ Powder
Titanium hydroxide precipitate was obtained by the reaction of 0.5M TiOCl2 and 5M NH4OH solutions, then anatase TiO2 powder with nanotubes was prepared by the digestion of the heat-treated powder in 5M NaOH solution. Nanotube was formed for anatase TiO2 powder digested at 10$0^{circ}C$ above, and the amount and length of nanotube increased with the digestion temperature. In the case of the powder digested at 15$0^{circ}C$ for 12h, the formed nanotube was 100~150nm in length, 10~20 nm in diameter, and 2nm in width of the walls on both sides of the nanotube. The powder digested at 15$0^{circ}C$ for 12h showed the highest specific surface area of 270$m^2$/g.
Key words: $TiO_2$nanotube, Anatase, Digestion
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