Photocatalytic activity indicator inks for probing a wide range of surfaces

•Three different inks used to assess the activities of different photocatalytic materials with widely different activities.•Large body of round robin results presented and analysed statistically.•Digital scanner, UV/Vis spectrophotometry and diffuse reflectance spectroscopy used to monitor colour ch...

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Bibliographic Details
Published in:Journal of photochemistry and photobiology. A, Chemistry. Chemistry., 2014-09, Vol.290, p.63-71
Main Authors: Mills, Andrew, Hepburn, James, Hazafy, David, O’Rourke, Christopher, Wells, Nathan, Krysa, Josef, Baudys, Michal, Zlamal, Martin, Bartkova, Hana, Hill, Claire E., Winn, Kim R., Simonsen, Morten E., Søgaard, Erik G., Banerjee, Swagata, Fagan, Rachel, Pillai, Suresh C.
Format: Article
Language:English
Subjects:
Acid Violet 7
Basic Blue 66
Inks
Photocatalysis
Resazurin
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Summary:•Three different inks used to assess the activities of different photocatalytic materials with widely different activities.•Large body of round robin results presented and analysed statistically.•Digital scanner, UV/Vis spectrophotometry and diffuse reflectance spectroscopy used to monitor colour change.•Rapid, inexpensive method to assess photocatalyst activity. Three photocatalyst inks based on the redox dyes, Resazurin (Rz), Basic Blue 66 (BB66) and Acid Violet 7 (AV7), are used to assess the photocatalytic activities of a variety of different materials, such as commercial paint, tiles and glass and laboratory made samples of sol–gel coated glass and paint, which collectively exhibit a wide range of activities that cannot currently be probed by any one of the existing ISO tests. Unlike the ISO tests, the ink tests are fast (typically
ISSN:1010-6030
1873-2666
DOI:10.1016/j.jphotochem.2014.06.007