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. 2018 Jan 30;8:1894. doi: 10.1038/s41598-018-19972-0

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Bacteria-activated photocatalysis. (a) Ground state absorption spectrum for Staphylococcus aureus calculated from reflectance of S. aureus deposited on a tile surface. The inset shows bandgap estimation. (b) Pseudo first order rate coefficients for inactivation of Staphylococcus aureus on various coatings. Dark control measures the ability of the rutile/anatase + 0.1 (w/w) PHF coatings to inactivate bacteria in the dark. Light control measures the ability of rutile/silica coatings to inactivate bacteria in light. The ratio of bacteria was ~80 CFU per 1 µg of TiO₂. N = 6.