Next Article in Journal
Study of Topography and Distribution State of the Nanoscale Passivation Film on a Rough Tinplate Surface
Previous Article in Journal
Effect of Precipitate Embryo Induced by Strain on Natural Aging and Corrosion Behavior of 2024 Al Alloy
Article Menu
Issue 3 (March) cover image

Export Article

Open AccessArticle
Coatings 2018, 8(3), 93; https://doi.org/10.3390/coatings8030093

Bacterial Biofilm Characterization and Microscopic Evaluation of the Antibacterial Properties of a Photocatalytic Coating Protecting Building Material

1
LMDC, Université de Toulouse, INSA/UPS Génie Civil, 135 Avenue de Rangueil, 31077 Toulouse Cédex 04, France
2
LGC, Université de Toulouse, UOS-CNRS Dép. BioSyM, 4 allée Emile Monso, 31029 Toulouse, France
*
Author to whom correspondence should be addressed.
Received: 2 February 2018 / Revised: 28 February 2018 / Accepted: 4 March 2018 / Published: 5 March 2018
(This article belongs to the Special Issue Biological Coatings for Buildings)
Full-Text   |   PDF [21124 KB, uploaded 5 March 2018]   |  

Abstract

Use of photocatalytic paint-like coatings may be a way to protect building materials from microbial colonization. Numerous studies have shown the antimicrobial efficiency of TiO 2 photocatalysis on various microorganisms. However, few have focused on easy-to-apply solutions and on photocatalysis under low irradiance. This paper focuses on (a) the antibacterial properties of a semi-transparent coating formulated using TiO 2 particles and (b) the microscopic investigations of bacterial biofilm development on TiO 2 -coated building materials under accelerated growth conditions. Results showed significant antibacterial activity after few hours of testing. The efficiency seemed limited by the confinement of the TiO 2 particles inside the coating binder. However, a pre-irradiation with UV light can improve efficiency. In addition, a significant effect against the formation of a bacterial biofilm was also observed. The epifluorescence approach, in which fluorescence is produced by reflect rather than transmitted light, could be applied in further studies of microbial growth on coatings and building materials. View Full-Text
Keywords: coating; building materials; bacterial growth; proliferation; biofilm; antibacterial coating; building materials; bacterial growth; proliferation; biofilm; antibacterial
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Verdier, T.; Bertron, A.; Erable, B.; Roques, C. Bacterial Biofilm Characterization and Microscopic Evaluation of the Antibacterial Properties of a Photocatalytic Coating Protecting Building Material. Coatings 2018, 8, 93.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Coatings EISSN 2079-6412 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top