Biocidal effects of photocatalytic semiconductor TiO2

Photocatalytic action of the commercial TiO(2) was the subject of study on the destruction of the microbes within the biofilms. The TiO(2) 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 TiO(2) co...

Full description

Saved in:
Bibliographic Details
Published in:Colloids and surfaces, B, Biointerfaces B, Biointerfaces, 2006-08, Vol.51 (2), p.107-111
Main Authors: Rajagopal, G, Maruthamuthu, S, Mohanan, S, Palaniswamy, N
Format: Article
Language:English
Subjects:
Bacteria - drug effects
Bacteria - growth & development
Biofilms
Coated Materials, Biocompatible
Hydrogen Peroxide - metabolism
Light
Nanotechnology
Particle Size
Photosensitizing Agents - pharmacology
Semiconductors
Spectroscopy, Fourier Transform Infrared
Titanium - pharmacology
X-Ray Diffraction
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Photocatalytic action of the commercial TiO(2) was the subject of study on the destruction of the microbes within the biofilms. The TiO(2) 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 TiO(2) 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 H(2)O(2) at TiO(2)/biofilm interface. The formation of H(2)O(2) at the TiO(2)/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.
ISSN:0927-7765
DOI:10.1016/j.colsurfb.2006.06.003