Decomposition of Formaldehyde Using TiO$_2$ Photocatalyst Beads by Circulating Fluidized Bed Chemical Vapor Deposition

CFB-CVD법으로 제조된 TiO$_2$ 광촉매 비드를 이용한 포름알데히드의 분해

  • Kim, Kyoung-Hwan (Department of Environmental Engineering, Sunchon National University) ;
  • Kim, Yu-Bong (Department of Environmental Engineering, Sunchon National University) ;
  • Lee, Seung-Young (Clean Energy System Research Center, Korea Institute of Energy Research) ;
  • Park, Jae-Hyeon (Clean Energy System Research Center, Korea Institute of Energy Research) ;
  • Lim, Jin-Young (SANETECH Co., Ltd) ;
  • Jung, Sang-Chul (Department of Environmental Engineering, Sunchon National University)
  • 김경환 (순천대학교 토목환경공학부) ;
  • 김유봉 (순천대학교 토목환경공학부) ;
  • 이승용 (에너지기술연구원 청정시스템연구센터) ;
  • 박재현 (에너지기술연구원 청정시스템연구센터) ;
  • 임진영 ((주)세인테크) ;
  • 정상철 (순천대학교 토목환경공학부)
  • Published : 2008.07.31

Abstract

TiO$_2$ photocatalyst films deposited beads were prepared by circulating fluidized bed chemical vapor deposition(CFB-CVD) using TTIP(Titanium Tetra Iso-Propoxyde). Photocatalytic activities of Photocatalyst beads were evaluated by decomposition rate of formaldehyde in aqueous solution using a photo-reactor. From the result of photocatalytic degradation of formaldehyde, decomposition rate were shown gradually increased according to the increase of UV intensity, circulating fluid velocity and addition amount of H$_2$O$_2$. However the decomposition rate of formaldehyde were decreased according to the increase of initial concentration and pH value.

TTIP를 원료로 하여 순환유동층화학기상증착법으로 TiO$_2$ 광촉매 막이 코팅된 비드를 제조하였고, 광반응기에서 포름알데히드 수용액의 분해실험을 통하여 광촉매 비드의 활성을 평가 하였다. 포름알데히드의 광촉매 분해실험에서 자외선 강도, 순환유속 그리고 과산화수소의 첨가량이 증가함에 따라 분해속도가 증가하는 경향을 나타내었으며, 초기농도와 pH의 증가는 분해속도를 낮추는 결과를 가져왔다.

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