Professor Patrik Schmuki
University of Erlangen Nuremberg
|TITLE:||"TiO2 nanotubes and other Self-organized Oxide Structures: Formation and Applications"|
|DATE:||Thursday, October 6, 2011|
|PLACE:||Building 212 / A-157|
Refreshments will be served at 10:45 a.m.
ABSTRACT: The presentation discusses approaches to achieve electrochemical fabrication of self-organized high aspect ratio features of titanium oxide (and similar oxides) with robust meso-scale dimensions. Several highly promising geometries, (nanotubular, nanochannel and nanosponge materials), are being compared. The different morphologies can be produced by adjusting the parameters of anodic oxidation of a metal surface. The ordered oxide can be modified (doped, decorated, sensitized) to considerably alter and adjust different physical chemical and mechanical properties. The most important functional oxide structures are titanium oxide nanotubes. As a wide band-gap semiconductor that is extremely stable to photocorrosion the material is key, for example, for some unique surface cataytic applications, can be used in DSSCs, ion-insertion devices and provides a high degree of biocompatibility. The talk will give an overview of the synthesis, properties and applications of different TiO2 nanoscale architectures.
References (recent review):
P. Roy, S. Berger, P. Schmuki, Angew. Chem. Int. Ed. (2011), 2904