effect of thermal treatment on antibacterial properties of nanostructured TiO₂(N) films illuminated with visible light

This work focuses on the photocatalytic performances and antibacterial activity of nitrogen doped TiO₂ nanosystems with three and five layers obtained by a sol-gel route, followed by thermal treatment in oxygen or ammonia atmosphere at temperatures between 400 and 1000°C. Subsequently, the antibacte...

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Bibliographic Details
Published in:World journal of microbiology & biotechnology 2009, Vol.25 (1), p.27-31
Main Authors: Văcăroiu, Corina, Enache, Mădălin, Gartner, Măriuca, Popescu, Gabriela, Anastasescu, Mihai, Brezeanu, Aurelia, Todorova, N, Giannakopoulou, Tatiana, Trapalis, Christos, Dumitru, Lucia
Format: Article
Language:English
Subjects:
ammonia
antibacterial properties
Applied Microbiology
Bacteria
Biochemistry
Biological and medical sciences
Biomedical and Life Sciences
Biotechnology
E coli
Environmental Engineering/Biotechnology
Escherichia coli
Fundamental and applied biological sciences. Psychology
heat treatment
Life Sciences
lighting
Microbiology
Nitrogen
Original Paper
oxygen
temperature
Titanium dioxide
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Summary:This work focuses on the photocatalytic performances and antibacterial activity of nitrogen doped TiO₂ nanosystems with three and five layers obtained by a sol-gel route, followed by thermal treatment in oxygen or ammonia atmosphere at temperatures between 400 and 1000°C. Subsequently, the antibacterial activity of the obtained nanosystems on the Escherichia coli cells are determined and discussed. The obtained results show a significant dependence of the functional performances on the system's composition. In particular, the antimicrobial activity of nitrogen-doped TiO₂ films is correlated with the temperature of thermal treatment and illumination time with visible artificial light.
ISSN:0959-3993
1573-0972
DOI:10.1007/s11274-008-9856-6