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PGI Kolloquium: Prof. Dr. Manfred Kappes, Karlsruhe Institute of Technology, Karlsruhe, Germany

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16.10.2020 11:00 Uhr

Information about Isolated Metal Clusters from Theory and Experiment

BildCopyright: Prof Dr. Kappes

Transition metal clusters are of interest in fields ranging from nanoscience to heterogeneous catalysis. Properties depend not only on nuclearity but also on environmental interactions. The latter can be reduced by ligand passivation at the expense of modifying the electronic and geometric structure of the metal cluster cores. We study this by probing isolated clusters with trapped ion electron difraction (TIED) and high resolution trapped ion mobility spectrometry (TIMS) – comparing experimental results with quantum chemical predictions. The talk will focus on two applications of this approach:  (i) hydrogenated ruthenium clusters [1] and (ii) ligand stabilized coinage metal nanoalloys [2]

[1] Structural Phase Transition of Ruthenium Cluster Hydrides; A. Hehn, D Bumuller, W. Klopper, M. Kappes, and D. Schooss, J. Phys. Chem. C, 124, 14306 (2020).

[2] Nanogymnastics: Visualization of Intercluster Reactions by High-Resolution Trapped Ion Mobility Mass Spectrometry; A. Baksi, E. Schneider, P. Weis, K. R. Krishnadas, D. Ghosh, H. Hahn, T. Pradeep and M. M. Kappes, J. Phys. Chem. C, 123, 28477 (2019).

Kontakt

Dr. Martina Luysberg
Telefon: +49 2461 61-2417
Fax: +49 2461 61-6444
E-Mail: m.luysberg@fz-juelich.de