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Preparation of TiO2 and TiO2-CdS Photocatalayst Using the Supercritical Fluid Method

초임계 유체법에 의한 TiO2 및 TiO2-CdS계 광촉매 제조에 관한 연구

  • 김종하 (배재대학교 재료공학과) ;
  • 박상준 (배재대학교 재료공학과) ;
  • 황수현 (배재대학교 재료공학과) ;
  • 정용진 (배재대학교 재료공학과) ;
  • 전일수 (배재대학교 재료공학과) ;
  • 조승범 (LG 화학기술연구원 신소재연구소) ;
  • 전명석 (한국에너지기술연구원) ;
  • 임대영 (배재대학교 재료공학과)
  • Published : 2003.12.01

Abstract

TiO$_2$ and TiO$_2$-CdS which were expected to be highly activated photocatalysts with semiconductor properties, were prepared using supercritical fluid method. The powders prepared by supercritical fluid were agglomerate foam in 2-3 ${\mu}{\textrm}{m}$ size and the primary particles of 20 nm were arranged in the powders. The powders which were prepared by supercritical fluid method were anatase phase without any heat treatment.

본 연구에서는 반도체 성질을 지닌 TiO$_2$ 분말과 촉매적 활성이 높은 물질로 예상되는 TiO$_2$-CdS계 분말을 초임계 유체법으로 제조하였다. 초임계유체법을 이용하여 제조된 미 분말들은 2-3$mu extrm{m}$ 크기의 응집체였고, 20nm크기의 아주 미세한 1차 입자들로 이루어져있었다. 또한 초임계 유체법으로 어떤 열처리 없이도 아나타제 결정질 분말을 얻을 수 가 있었다.

Keywords

References

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