Dresden 2017 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
O: Fachverband Oberflächenphysik
O 49: Oxide and Insulator Surfaces: Adsorption
O 49.2: Poster
Dienstag, 21. März 2017, 18:30–20:30, P1A
On the Photocatalytic Activity of Metal Oxide Surfaces: Adsorption and Decomposition of N2O on TiO2(110) — •Marvin Quack, Max Kauer, and Karina Morgenstern — Chair of Physical Chemistry I, Ruhr-Universität Bochum, Germany
The role of N2O as a greenhouse gas has been a major issue regarding global warming. In addition, N2O is known to be responsible for stratospheric ozone depletion. A possible solution to decrease the emission of N2O is the catalytic decomposition into molecular oxygen and nitrogen using metal oxides. In order to understand the principle of this catalytic process, we investigated adsorption and photocatalytic decomposition of N2O on a rutile TiO2(110) single crystal surface by Fourier transform infrared spectroscopy (FTIR) in ultra high vacuum at temperatures from 100 to 150 K. These studies show N2O adsorbs on the surface in a linear configuration, binding to surface Ti4+ species via the O-end of the molecule. The effect of UV light irradiation on the catalytic decomposition of the adsorbed molecule has been investigated by in-situ infrared spectroscopic measurements. This contribution will discuss the time-resolved depletion of the absorption signals during irradiation in detail.