A simple, inexpensive method for the rapid testing of the photocatalytic activity of self-cleaning surfaces
•Resazurin ink used to assess activity of self-cleaning glass.•Digital scanner and UV/Vis spectrophotometry used to monitor colour change.•Red component of RTGB digital images directly related to change in absorbances of ink films.•Rapid, inexpensive method to assess photocatalyst activity.
A rapid, semi-quantitative, inexpensive method, using a simple digital scanner and an indicator ink, suitable for use in the laboratory, or in the field, for assessing the photocatalytic activity of commercial photocatalytic self-cleaning materials, such as glass, is described. The repeatability of the current method is found to be high and better than many of the previously reported ISO photocatalyst tests.
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 272, 15 November 2013, Pages 18–20