Berlin 2008 – scientific programme
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O: Fachverband Oberflächenphysik
O 55: Poster Session III - MA 141/144 (Methods: Atomic and Electronic Structure; Particles and Clusters; Heterogeneous Catalysis; Semiconductor Substrates: Epitaxy and Growth+Adsorption+Clean Surfaces+Solid-Liquid Interfaces; Oxides and Insulators: Solid-Liquid Interfaces+Epitaxy and Growth; Phase Transitions; Metal Substrates: Adsorption of Inorganic Molecules+Epitaxy and Growth; Surface Chemical Reactions; Bimetallic Nanosystems: Tuning Physical and Chemical Properties; Oxides and insulators: Adsorption; Organic, polymeric, biomolecular films; etc.)
O 55.70: Poster
Wednesday, February 27, 2008, 18:30–19:30, Poster F
Interaction of SrTiO3 nanoparticles with reactive gases — •Dominik Schwendt1, Florian Voigts2, Wolfgang Maus-Friedrichs2, Christos Argirusis3, and Jana Große-Brauckmann3 — 1Institut für Materialien und Bauelemente der Elektronik, Leibniz Universität Hannover, Appelstr. 11A, 30167 Hannover, Germany — 2Institut für Physik und Physikalische Technologien, TU Clausthal, Leibnizstr. 4, 38678 Clausthal-Zellerfeld, Germany — 3Institut für Metallurgie, TU Clausthal, Robert-Koch-Straße 42, 38678 Clausthal-Zellerfeld, Germany
SrTiO3 is known for its capability as high temperature oxygen sensor. The most interesting application of this sensor would be the analysis of automobile exhaust, allowing the optimisation of fuel injection and catalytic oxidation of toxic exhaust.
Metastable Impact Electron Spectroscopy as wells as Ultraviolet Photoelectron Spectroscopy are used to analyse the valence band structure of SrTiO3 and its adsorbates, while we use X-ray Photoelectron Spectroscopy to check the stoichiometry of the samples. In this poster we present the results of the interaction of SrTiO3, produced via a sol-gel-route, with different reactive gases, such as H2O, CO2, CO, and NO. The results are being compared to the interaction of these gases with SrTiO3(100) single crystalls.