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

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

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

초록

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.

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.

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참고문헌

  1. Surf. Sci. v.101 no.1;2;3 Photocatalytic Hydrogen Production from Water Over SrTiO₃Crystal Surfaces, Electron Spectroscopy Studies of Adsorbed H₂, O₂and H₂O F.T.Wagner;S.Ferrer;G.A.Somorjai https://doi.org/10.1016/0039-6028(80)90641-X
  2. J. Phys. Chem. v.85 Photocatalytic Reaction of Water with Carbon-over Platnized Titania S.Sato;J.M.White https://doi.org/10.1021/j150604a008
  3. Chem. Soc. Review Water-purificating by Semiconductor Photocatalysis A.Mills;R.H.Davies;D.Worsely
  4. New Sci. v.10 Semiconductors Help the Sun to Clean Water J.Fettwell
  5. 1990 ASME International Solar Energy Conference Photocatalytic Decomposition of Aqueous Organic Compounds as a Function of Solar Irradiation Intensity K.A.Magrini;J.D.Webb
  6. J. Phys. Chem. v.88 Heterogeneous Photocatalytic Reactions of Organic Acidsand Water : New Reaction Paths Besides the Photo-Kolbe Reaction T.Sakata;T.Kawai;K.Hashimoto https://doi.org/10.1021/j150655a032
  7. Oyo Buturi (Applied Physics) v.53 Photochemical Reaction and Energy Conversion with Particulate Semiconductor M.Fujii;T.Kawal;S.Kawai