TiO2 고정화 지지체를 이용한 Chlorothalonil의 광촉매분해

김종향; 남춘동; 김병관

Journal of the Korean Industrial and Engineering Chemistry, Vol.7, No.4, 750-756, August, 1996

Export Citation

TiO2 고정화 지지체를 이용한 Chlorothalonil의 광촉매분해

Photocatalytic Degradation of Chlorothalonil using TiO₂ Supported in Matrices

김종향, 남춘동, 김병관

초록

TiO₂ 고정화 물질은 Titanium tetraisopropoxide-isopropanol 용액에 제오라이트와 glass filter를 담지한후, 이것을 공기중에 건조시켜 500℃에서 소결하여 얻었다. Chlorothalnoil의 분석은 ECD가 부착된 가스크로마토그래피로 분석하였다. Chlorothalnoil에 대한 분해효율은 TiO₂로 지지된 광촉매가 효과적이었고, 3시간 후 완전기 분해되었다. 반응 생성물들은 TiO₂로 지지된 제오라이트에서는 Cl^-가 5.0ppm, TiO₂로 지지된 glass filter에서는 Cl^-가 7.5ppm,그리고 TiO₂ 분말에서는 Cl^-가 2.0ppm 각각 생성되었다. 그러나, CN^-는 지지체의 종류에 관계없이 검출한계이하였다.

TiO₂ was dispersed in zeolite and glass filter by soaking them in isopropanol solution of titanium tetraisopropoxide and drying in the air, followed by calcination at 500℃. The analysis of chlorothalnoil was carried out by gas chromatograph with an electron capture detector. Chlorothalnoil was degraded photocatalytically over the matrix-supported TiO₂ efficiently and could be completely photodegraded after 3hrs. Production were 5.0ppm of Cl^- for TiO₂ supported zeolite, 7.5ppm of Cl^- for TiO₂ supported glass filter and 2.0ppm of Cl^- for TiO₂ powder. But, CN^- was lower than the detection limit irrespective of matrices.

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[10] LiPuma G, Yue PL, "Photodegradation of Pentachlorophenol," Photocatalytic Purification and Treatment of Water and Air, D.F. Ollis and H. Al-Ekabi (Ed.), Elsevier Science Publishers, B.V., pp. 689 (1993)

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