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Photocatalytic Degradation of Acid Orange 7 on TiO2 Films Prepared from Various Powder Catalysts

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    0350965 - ÚFCH JH 2011 RIV US eng J - Journal Article
    Zlámal, M. - Krýsa, J. - Jirkovský, Jaromír
    Photocatalytic Degradation of Acid Orange 7 on TiO2 Films Prepared from Various Powder Catalysts.
    Catalysis Letters. Roč. 133, 1-2 (2009), s. 160-166. ISSN 1011-372X. E-ISSN 1572-879X
    R&D Projects: GA MŠMT 1M0577
    Institutional research plan: CEZ:AV0Z40400503
    Keywords : titanium dioxide * immobilization * particulate film
    Subject RIV: CF - Physical ; Theoretical Chemistry
    Impact factor: 2.021, year: 2009

    The advantage of using particulate layers in water and air cleaning is in the combination of two important features in photocatalysis: high surface area of powder particles and immobilization of photocatalyst. The present paper deals with the preparation of particulate TiO2 layers using three different techniques: sedimentation, electrophoresis and dip-coating and different particulate photocatalyst namely P25 (Degussa) and anatase Ti1 and Ti2 of Czech production. Photocatalytic activity was tested using an aqueous solution of a model azo-dye Acid Orange 7. It was found that the method of preparation has not a significant impact on the photocatalytic properties of resulting layer. Surprisingly the immobilized powder with the lowest surface area and crystal size around 170 nm exhibit the best photocatalytic performance.
    Permanent Link: http://hdl.handle.net/11104/0190820

     
     
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