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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
ABSTRACT
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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