Regensburg 2010 – scientific programme

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MM: Fachverband Metall- und Materialphysik

MM 26: Poster Session

MM 26.57: Poster

Tuesday, March 23, 2010, 14:45–16:30, Poster C

Ag-TiO2 nanocomposites for antibacterial and photocatalytic applications — Tomislav Hrkac¹, Venkata Sai Kiran Chakravadhanula¹, Nathalie Wohner¹, Vladimir Zaporojtchenko¹, •Thomas Strunskus¹, Dieter Garbe-Schönberg², and Franz Faupel¹ — ¹Institut für Materialwissenschaft-Materialverbunde, Christian-Albrechts-Universität zu Kiel, Kaiserstr. 2, 24143 Kiel — ²Dept. of Geology/ ICPMS Lab, CAU Kiel, Ludewig-Meyn-Strasse 10, 24118 Kiel

Nanocomposites offer the possibility to combine the antibacterial property of Ag with the photocatalytic activity of TiO₂ in one material. Here TiO₂-Ag 2D and 3D nanocomposites were prepared by physical vapor deposition techniques allowing to varying many different morphologies. The antibacterial efficiency was studied by monitoring the silver release using ICP-MS. The optical structural properties of the composite was characterized by UV-Vis, XRD, HRTEM and XPS, and the photocatalytic activity was determined by UV illuminated dye photo degradation. Considering the different morphologies the correlation of photocatalytic activity and silver release will be discussed.