Journal
CATALYSIS TODAY
Volume 280, Issue -, Pages 8-13Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cattod.2016.04.041
Keywords
Self-cleaning paints; Resazurin ink; Acid violet 7 ink; Weathering; QUV
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Smart inks as a redox indicators of photocatalytic activity were applied on several paints with acrylic and silicate binder exposed to accelerated weathering test. The results show, that self-cleaning paints need some weathering to develop full photocatalytic activity. On, the other side weathering may negatively influence the durability of the paint as shown for a silicate based exterior paint, which was significantly degraded after 350 h of weathering test. Smart inks proved to be suitable and rapid indicators of paint photoactivity. Resazurin ink is convenient only for unexposed paint with low photocatalytic activity while an Acid Violet 7 ink was appropriate for most of the paints, especially those that were weathered. (C) 2016 Elsevier B.V. All rights reserved.
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