Berlin 2024 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 50: Supported Nanoclusters: Structure, Reaction, Catalysis
O 50.7: Vortrag
Mittwoch, 20. März 2024, 12:00–12:15, TC 006
Identifying Partial Reaction Steps in the Photocatalytic Conversion of Alcohols on Rutile Titania by Isotopic Labeling — •Martin Tschurl, Philip Petzoldt, and Ueli Heiz — Chair of Physical Chemistry, School of Natural Sciences & Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, 85748 Garching, Germany
The substitution of particular isotopes is a powerful method to uncover partial reactions in complex networks and to identify rate-determining steps by ascertaining kinetic isotope effects. Utilizing this methodology, we study the reaction of methanol on a rutile TiO2(110) single crystal decorated with Pt10 clusters under UV illumination in an ultra-high vacuum environment. By applying alcohols with different degrees of deuteration, we exemplarily reveal the reaction sequence in the photocatalysis of co-catalyst-loaded rutile titania for this class of molecules.