Issue 21, 2014

A smart ink for the assessment of low activity photocatalytic surfaces

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

Article information

Article type
Paper
Submitted
25 jul. 2014
Accepted
03 sep. 2014
First published
03 sep. 2014

Analyst, 2014,139, 5409-5414

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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