Removing Algae with Pt-Doped TiO2 Coatings on Foamed Glass
The commercial nano-sized TiO2 powder (P25) coated with PtO2 powder by a sonochemistry method was immobilized on the foamed waste-glass substrates by using plasma spray coating technology. The immobilized TiO2-Pt coatings were applied to treat both green tide and red tide under illumination of an UV light. Their photocatalytic characterizations were evaluated as functions of the number of residual algae, transmission as well as pH value with illumination time. It’s found that the plasma sprayed Pt-doped TiO2 nanostructured coatings on foamed waste-glass showed higher photocatalytic activity, which was effective to treat the green tide and red tide.
Hyungsun Kim, Junichi Hojo and Soo Wohn Lee
J. J. Song et al., "Removing Algae with Pt-Doped TiO2 Coatings on Foamed Glass", Materials Science Forum, Vols. 544-545, pp. 135-138, 2007