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SKM 2023 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 11: Surface Reactions

O 11.5: Vortrag

Montag, 27. März 2023, 16:00–16:15, CHE 91

On-Surface CO2 Capturing by Electron-Rich Phosphines: Comparison of the Assembly on Ag(100) and on the NaBr(100) Double Layer — •Vladimir Lykov1, Florenz Buss2, Fabian Dielmann3, and Karina Morgenstern11Ruhr-Universität Bochum, Germany — 2Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Germany — 3Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Center for Chemistry and Biomedicine, Innsbruck, Austria

Electron-rich phosphines exhibit exceptional electron donor properties and form zwitterionic Lewis base adducts with small inert molecules, for instance, carbon dioxide (CO2) and sulfur dioxide (SO2) [1]. The main focus of this project is understanding the influence of geometrical confinement on the capturing of CO2 by electron-rich phosphines. The effect of geometrical confinement is studied with a surface science approach. For this purpose, we use a low-temperature (7 K) scanning tunneling microscope (STM). To understand the influence of the metal surface on carbon dioxide capture, we compare the molecules adsorbed on Ag(100) to those on NaBr(100) double layer, supported by Ag(100). The subsequent deposition of carbon dioxide and electron-rich phosphines confirmed the affinity of CO2 to these phosphines. The influence of the two surfaces on the product assembly will be discussed in this presentation.

[1] F. Buß, et al. Chem. Eur. J. 2022, 28, e2021040.

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