Biocidal Effects of Photocatalytic Semiconductor Tio2.
From: Corrosion Protection Division, Central Electrochemical Research Institute, Karaikudi 630 006, India. dhadi.rajagopal@gmail.com
Colloids and surfaces. B, Biointerfaces
- Publish Date: Aug 2006
- ISSN: 0927-7765
- Volume: 51
- Issue: 2
- Pages: 107-11
- Medium: Print
- Language: English
- Citation (JAMA): Rajagopal G, Maruthamuthu S, Mohanan S, et al. Biocidal Effects of Photocatalytic Semiconductor Tio2.. Aug 2006;51:107-11
Abstract
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.
Mesh Headings (Keywords): Bacteria, Biofilms, Coated Materials, Biocompatible, Hydrogen Peroxide, Light, Nanotechnology, Particle Size, Photosensitizing Agents, Semiconductors, Spectroscopy, Fourier Transform Infrared, Titanium, X-Ray Diffraction
Check for Full Text / PubMed Unique Identifier (PMID): 16870404
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