Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 3, 2015
Previous Article Next Article

Visible light induced photocatalytic inactivation of bacteria by modified titanium dioxide films on organic polymers

Author affiliations

Abstract

Commercially available polypropylene foil was pretreated with a low temperature oxygen plasma and covered with a thin film of nanocrystalline titanium dioxide by dip coating. The films were then photosensitized by titanium(IV) surface charge transfer complexes formed by impregnation with catechol. The photoactivity of the coatings up to 460 nm was confirmed by photoelectrochemical measurements. The photoinactivation of Escherichia coli and Staphylococcus aureus was evaluated by a glass adhesion test based on ISO 27447:2009(E) in the presence of visible light. The coating showed good antimicrobial activity induced by light from a light-emitting diode (405 nm), in particular towards E. coli ATCC 25922 strain. Adaptation of ISO 27447:2009(E) to assess bacterial photoinactivation by photocatalytic coatings will allow this procedure to be applied for the comparison of photoactivity under a range of irradiation conditions.

Graphical abstract: Visible light induced photocatalytic inactivation of bacteria by modified titanium dioxide films on organic polymers

Back to tab navigation

Article information


Submitted
13 Jul 2014
Accepted
05 Sep 2014
First published
08 Sep 2014

Photochem. Photobiol. Sci., 2015,14, 514-519
Article type
Paper
Author version available

Visible light induced photocatalytic inactivation of bacteria by modified titanium dioxide films on organic polymers

R. Sadowski, M. Strus, M. Buchalska, P. B. Heczko and W. Macyk, Photochem. Photobiol. Sci., 2015, 14, 514
DOI: 10.1039/C4PP00270A

Social activity

Search articles by author

Spotlight

Advertisements