Weathering tests of photocatalytic facade paints containing ZnO and TiO2.

M. Baudys, J. Krysa, M. Zlamal, A. Mills

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

The photocatalytic properties of self-cleaning acrylic paint containing TiO2 and ZnO were studied using Acid Orange 7 as a model compound. Paints were exposed to simulated weathering tests in a QUV panel. The initial photoactivity of the unweathered paints with ZnO was significantly higher. In the case of paints containing P25 the photocatalytic activity increases with weathering time, due to increasing destruction of the polymer resin and consequent exposure of the photocatalyst pigment to the Acid Orange 7 test solution. In contrast, in the case of paints containing ZnO, a decrease in photocatalytic activity is observed after weathering, due to the loss and/or photocorrosion of ZnO particles during the weathering process.
Original languageEnglish
Pages (from-to)83-87, Impact Factor: 4.3
JournalChemical Engineering Journal
Volume261
Early online date06 Apr 2014
DOIs
Publication statusPublished - 2015

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