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HWAHAK KONGHAK,
Vol.39, No.4, 385-389, 2001
Vol.39, No.4, 385-389, 2001
화학기상증착법으로 제조한 TiO2 막의 광촉매 활성
Photocatalytic Activity of the TiO2 Film Grown by Chemical Vapor Deposition
제조방법을 달리하여 TiO2광촉매 막을 합성하였고, 제조방법에 따른 광촉매 분해 특성을 메틸렌블루의 광분해를 통하여 검토하였다. 전구체로 titanium tetraisopropoxide를 이용하여 아나타제 결정구조의 TiO2 막을 알루미나구 위에 화학기상증착법(CVD)과 졸-겔법으로 제조하였다. CVD법으로 만든 TiO2 광촉매는 메틸렌블루 용액의 순환속도가 빠를 때와 단파장대의 UV램프에서 좋은 특성을 나타내었다. 화학기상증착법으로 제조한 광촉매가 졸-겔법의 광촉매보다 약 5배정도 광촉매 활성이 높게 나타났다.
Using the different preparation methods, we synthesized TiO 2 photocatalyst coatings and examined the photocatalytic decomposition of methylene blue using them. Anatase TiO2 coatings on alumina balls were prepared by Chemical Vapor Deposition(CVD) or sol-gel methods using titanium tetraisopropoxide as a precursor. In the case of CVD-grown TiO2 photo-catalysts, the high circulation rate of methylene blue solution and the short mean wavelength of UV lamp resulted in better decomposition activity of methylene blue. CVD-grown TiO2 photocatalyst was found to be five times more active than the TiO2 photocatalyst from sol-gel method.
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[Cited By]
- Ryu SK, Eom SY, Yim KS, EdieDan D, Korean Chemical Engineering Research, 42(3), 288, 2004
- Eom SY, Lee CH, Park KH, Ryu SK, Korean Chemical Engineering Research, 45(3), 269, 2007
- Jung JA, Kwak DH, Oh DW, Park DM, Yang OB, Korean Chemical Engineering Research, 50(1), 11, 2012
- Lee NH, Jung SC, Sun IS, Cho DH, Shin S, Kim SJ, Korean Journal of Materials Research, 14(6), 407, 2004
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