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The effect of thermal treatment on antibacterial properties of nanostructured TiO |
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| Authors: | Corina Văcăroiu Mădălin Enache Măriuca Gartner Gabriela Popescu Mihai Anastasescu Aurelia Brezeanu N. Todorova Tatiana Giannakopoulou Christos Trapalis Lucia Dumitru |
| Affiliation: | (1) Institute of Biology of the Romanian Academy, Splaiul Independentei 296, Sector 6, P.O. Box 56-53, Bucharest, 060031, Romania;(2) Institute of Physical Chemistry of the Romanian Academy, Splaiul Independentei 202, Bucharest, Romania;(3) Institute of Materials Science, NCSR “Demokritos”, 153 10 Athens, Greece |
| Abstract: | 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. |
| Keywords: | TiO2 coatings Nitrogen-doping Antibacterial properties Thin films Nanostructured films Illumination |
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