An antimicrobial TiO2 coating for reducing hospital‐acquired infection
- 13 September 2007
- journal article
- research article
- Published by Wiley in Journal of Biomedical Materials Research Part B: Applied Biomaterials
- Vol. 85B (1), 220-224
- https://doi.org/10.1002/jbm.b.30939
Abstract
Titanium dioxide (TiO2) has been developed and applied extensively in the form of coatings, in particular for its unique properties such as non‐toxicity, high photocatalytic activity, and strong self‐cleaning ability. These coatings, which can be prepared via various processes, have not yet been proved to be antimicrobial. This research involves an arc ion plating method to produce TiO2 film on medical grade AISI 304 stainless steel. Antimicrobial efficacy of the deposits is expected due to the photocatalysis action of the anatase phase presented in the deposit. The performance of the coating is evaluated by a JIS Z2801:2000 industrial standard. Experimental results show that TiO2 film mainly consisting of anatase structure can be prepared with a high growth rate of 5 μm/h. Antimicrobial activity (R) of the deposited TiO2 film against Staphylococcus aureus and Escherichia coli was 3.0 and 2.5, respectively, far beyond the value designated in JIS standard. This provides an effective antimicrobial surface coating method for medical implements thereby reducing the risk of hospital‐acquired infections. © 2007 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2008Keywords
This publication has 17 references indexed in Scilit:
- Antibacterial performance of photocatalyst thin film fabricated by defection effect in visible lightNanomedicine: Nanotechnology, Biology and Medicine, 2006
- Effect of total and oxygen partial pressures on structure of photocatalytic TiO2 films sputtered on unheated substrateSurface and Coatings Technology, 2002
- Photocatalytic degradation of phenol by TiO2 thin films prepared by sputteringApplied Catalysis B: Environment and Energy, 2000
- Heterogeneous photocatalysis Transition metal ions in photocatalytic systemsApplied Catalysis B: Environment and Energy, 1999
- The Nature of Multilayered TiO2-Based Photocatalytic Films Prepared By a Sol-Gel ProcessMaterials Research Bulletin, 1998
- Bactericidal and Detoxification Effects of TiO2 Thin Film PhotocatalystsEnvironmental Science & Technology, 1998
- An overview of semiconductor photocatalysisJournal of Photochemistry and Photobiology A: Chemistry, 1997
- Brief introductory remarks on heterogeneous photocatalysisSolar Energy Materials and Solar Cells, 1995
- Bactericidal Activity of TiO2 Photocatalyst in Aqueous Media: Toward a Solar-Assisted Water Disinfection SystemEnvironmental Science & Technology, 1994
- Electrochemical Photolysis of Water at a Semiconductor ElectrodeNature, 1972