Rajagopal, G. and Maruthamuthu, S. and Mohanan, S. and Palaniswamy, N. (2006) Biocidal effects of photocatalytic semiconductor TiO2. Colloids and Surfaces B: Biointerfaces, 5 (2). pp. 107-111. ISSN 0927-7765

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Abstract

Photocatalytic action of the commercial TiO2 was the subject of study on the destruction of the microbes within the biofilms. The TiO2 powder was characterized by X-ray diffraction (XRD) for identifying its type and the particle size was determined. The biofilm was allowed to form over TiO2 coatings over glass slides irradiated with polychromatic light for different time durations and distances. It indicates that a five-fold decrease in bacterial count due to the formation of H2O2 at TiO2/biofilm interface. The formation of H2O2 at the TiO2/biofilm interface is estimated and it does not destroy the entire bacterial population within the biofilm. Bacterial killing effect is supported by FT-IR analysis.

Item Type:	Article
Uncontrolled Keywords:	Photocatalytic effect; Rutile TiO2; Hydrogen peroxide; Biofilm
Subjects:	Corrosion Protection Corrosion Science and Engineering
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	26 Mar 2012 09:38
Last Modified:	26 Mar 2012 09:38
URI:	http://cecri.csircentral.net/id/eprint/573

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