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An antimicrobial TiO 2 coating for reducing hospital‐acquired infection
Author(s) -
Chung ChiJen,
Lin HsinI,
Tsou HsiKai,
Shi ZhiYuan,
He JuLiang
Publication year - 2008
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.30939
Subject(s) - coating , antimicrobial , anatase , photocatalysis , materials science , titanium dioxide , nuclear chemistry , nanotechnology , metallurgy , chemistry , organic chemistry , catalysis
Titanium dioxide (TiO 2 ) 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 TiO 2 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 TiO 2 film mainly consisting of anatase structure can be prepared with a high growth rate of 5 μm/h. Antimicrobial activity (R) of the deposited TiO 2 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, 2008