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2 Polish Journal of Chemical Technology

2 2010

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Photoreduction of carbon dioxide with hydrogen using temperature programmed method

Kocemba I., Nadajczyk J., Góralski J., Szynkowska M. I.

Polish Journal of Chemical Technology

2010

Vol. 12, nr 3

1-2

The photocatalytic reduction of carbon dioxide with hydrogen was studied by Temperature-Programmed Surface Reaction (TPSR). This process was carried out in a flow reactor that was especially designed and constructed for this purpose. Titanium dioxide (TiO2, Degussa P-25) was used as supports for platinum, ruthenium and nickel catalysts. The experimental results indicated that the activity of photoreduction of CO2 changes as follows: Ru/TiO2> Ni/TiO2>= Pt/TiO2> TiO2.

A preliminary study on antifungal effect of TiO2-based paints in natural indoor light

Markowska-Szczupak A., Ulfig K., Grzmil B., Morawski A. W.

Polish Journal of Chemical Technology

2010

Vol. 12, nr 4

53-57

The antifungal activity of four commercial photocatalytic paints (KEIM Ecosil ME, Titanium FA, Photo Silicate and Silicate D) in natural indoor light was investigated. The paints contained TiO2 in rutile and anatase crystalline forms as evidenced by means of the X-ray diffraction analysis. In most cases the paints inhibited growth of fungi viz. Trichoderma viride, Aspergillus niger, Coonemeria crustacea, Eurotium herbariorum, and Dactylomyces sp . The KEIM Ecosil ME paint displayed the highest antifungal effect in the light, which could be explained with the highest anatase content. The paint antifungal activity and the fungal sensitivity to the TiO2- mediated photocatalytic reaction both decreased in the following orders: KEIM Ecosil ME > Titanium FA > Photo Silicate > Silicate D and T. viride > Dactylomyces sp. > A. niger > E. herbariorum.