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Issue 21, 2014
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A smart ink for the assessment of low activity photocatalytic surfaces

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Abstract

The azo dye, basic blue 66 (BB66) is used in a photocatalyst activity indicator ink (paii) to assess the activity of low activity photocatalytic surfaces, such as commercial photocatalytic tiles and silicone contaminated self-cleaning glass. The BB66 paii is shown to respond much faster than a previously reported, resazurin (Rz) based paii, i.e. the use of a BB66 paii on low activity self-cleaning tiles was found to be >6 times faster than the Rz paii. The BB66 paii is also shown to be effective at assessing the activity of piece of commercial self-cleaning glass contaminated with a coating of silicone, on which the Rz ink, in contrast, failed to show any significant change in colour over the same time period.

Graphical abstract: A smart ink for the assessment of low activity photocatalytic surfaces

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Article information


Submitted
25 Jul 2014
Accepted
03 Sep 2014
First published
03 Sep 2014

Analyst, 2014,139, 5409-5414
Article type
Paper

A smart ink for the assessment of low activity photocatalytic surfaces

A. Mills, C. O'Rourke and N. Wells, Analyst, 2014, 139, 5409
DOI: 10.1039/C4AN01375A

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