X-ray photoelectron spectroscopy (XPS or ESCA) is a versatile tool to investigate chemical reactions on surfaces. At third generation synchrotron radiation facilities, such as BESSY II in Berlin, XPS can be performed in situ with high resolution during adsorption or during heating. From the binding energies of the adsorbate and substrate core levels, detailed quantitative information on the chemical composition, chemical state and adsorption sites can be derived. In this presentation, two examples will be addressed. The first concerns the chemical properties of supported graphene or h-BN on metal surfaces, including the growth of metal clusters with a small size distribution on lattice-mismatched graphene Moire-layers and corres-ponding reaction studies. The second example addresses the adsorption and reaction of liquid organic hydrogen carriers (LOHCs) like octahydroindole or dodecahydro-N-ethylcarbazole, on metal surfaces. Hydrogen storage in LOHCs is a possible future technology to circumvent the challenges in energy storage.

Surface reactions of complex molecular systems: From supported graphene to hydrogen storage molecules

2019 Fall National Meeting

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