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Regensburg 2022 – scientific programme

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O: Fachverband Oberflächenphysik

O 70: Supported nanoclusters: Structure, Reactions, Catalysis

O 70.6: Talk

Thursday, September 8, 2022, 16:30–16:45, H6

Reaction Pathways in Alcohol Photoreforming on Cluster Co-Catalyst Loaded TiO2(110) — •Sonia Mackewicz, Moritz Eder, Philip Petzoldt, Martin Tschurl, and Ueli Heiz — Physical Chemistry, Department of Chemistry and Catalysis Research Center, Technical University of Munich

Heterogeneous photocatalysis offers the prospect of utilizing solar energy for the environmentally benign production of chemical fuels such as hydrogen. State-of-the-art materials often comprise co-catalyst loaded semiconductors, but these systems are still limited in efficiency. In order to systematically optimize photocatalysts, a profound knowledge of reaction mechanisms is crucial, whose details are so far little understood. Alcohols are an ideal model system to investigate reaction mechanisms in photocatalysis. Furthermore, they may serve as renewable sources for hydrogen in the future. In this talk, we give insights into the mechanistics of the alcohol photoreforming reaction on co-catalyst loaded TiO2(110). It is shown that semiconductor photocatalysis selectively enables new reaction pathways, which are not accessible by thermal or conventional chemical methods.

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