Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Preparation of Nanotube-shaped $TiO_2$ Powder

Nanotube형 $TiO_2$ 분말의 제조

  • Seo, Dong-Seok (Department of Materials Engineering, Chosun University. B.K 21, Development of Intelligent Materials & Its Application) ;
  • Lee, Jong-Kook (Department of Materials Engineering, Chosun University. B.K 21, Development of Intelligent Materials & Its Application) ;
  • Kim, Hwan (School of Materials Engineering, Seoul National University)
  • 서동석 (조선대학교 재료공학과 B.K 21, 핵심분야 지능재료 개발 및 산업화 사업단) ;
  • 이종국 (조선대학교 재료공학과 B.K 21, 핵심분야 지능재료 개발 및 산업화 사업단) ;
  • 김환 (서울대학교 재료공학부)
  • Published : 2000.07.01
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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.

Keywords

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