- 에멀젼법에 의한 $TiO_2$ 미립자의 합성 및 광흡수 특성
- ㆍ 저자명
- 전형탁,최연규,김복희
- ㆍ 간행물명
- 요업학회지
- ㆍ 권/호정보
- 1999년|36권 11호|pp.1163-1168 (6 pages)
- ㆍ 발행정보
- 한국세라믹학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
TiO2 powder was prepared by emulsion method. TiCl4 was used as a starting material. TiO(OH)2 was precipitated with NH4OH due to removal of Cl- TiO(NO3)2 aqueous solution was made by dissolving TiO(OH)2 with HNO3 Kerosene paraffin oil and span 80 were used to prepare organic phase. Various concentrations of TiO(NO3)2 aqueous solutions were emulsified with organic phase and dropeed into kerosene heated at 160-17$0^{circ}C$ to evaporate water in emulsion. As-dried powders were calcined at 400~100$0^{circ}C$ for 2 h, Anatase was formed at 17$0^{circ}C$ , Rutile began to form at $700^{circ}C$ and became single phase above 90$0^{circ}C$. The specific surface area of the powder prepared in 0.1M aqueous solution was 141m2/g after calcination at 50$0^{circ}C$. As the concentration of TiO(NO3)2 aqueous solution and calcined temperature increased the specific surface are decreased. UV spectrum of powders calcined at 50$0^{circ}C$ with various concentration showed absorbance in the vicinity of 380nm