Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Photocatalytic Degradation of Benzene in the Gas Phase using TiO2 Coated on Ceramic and Glass Beads

세라믹과 유리에 코팅한 TiO2 광촉매를 이용한 가스상 벤젠의 제거

  • 손현석 (서울대학교 보건대학원 환경보건학과) ;
  • 양원호 (대구가톨릭대학교 자연과학부 산업보건학과) ;
  • 김현용 (서울대학교 보건대학원 환경보건학과) ;
  • 이소진 (서울대학교 보건대학원 환경보건학과) ;
  • 박종래 (보람이엔티㈜) ;
  • 조경덕 (서울대학교 보건대학원 환경보건학과)
  • Published : 2003.02.01
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Abstract

TiO$_2$ sol was prepared by sol-gel method, and this sol was coated in ceramic and glass bead by dip-coating method. The coated catalyst was applied to degrade benzene in the gas phase by exposing to UV -lamp (365 nm) in a batch reactor. The removal efficiency of the benzene was compared by changing various conditions such as the kind of chemical additives, the coating beads (ceramic and glass), solution pH, the initial concentration of TiO$_2$ sol, UV intensity, and benzene concentration. The physical structure of TiO$_2$ sol used in this study was found to be pu-rely anatase type from XRD analysis. The results showed that ceramic bead was effective as the coating agent rath-er than glass bead. The significant change in the benzene removal efficiency of benzene did not occur with chang-ing coating frequency and the initial concentration of TiO$_2$ sol. The removal efficiency of benzene increased with increasing UV intensity, and with acidic treatment of TiO$_2$-coated ceramic bead.

Keywords

References

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