Erlangen 2026 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 13: Atmospheric Pressure Plasmas II
P 13.2: Vortrag
Mittwoch, 18. März 2026, 16:45–17:00, KH 01.020
Impact of simultaneous laser irradiation and plasma treatment to a Cu catalyst for CO2 reduction — •Alexander Schicke1,2, Jannis Kaufmann1, Sascha Chur1, Marc Böke2, and Judith Golda1 — 1Plasma Interface Physics, Ruhr University Bochum, Germany — 2Experimental Physics II, Ruhr University Bochum, Germany
Catalysts are able to optimise selectivity, efficiency, and reaction rates in chemical reactions.
Therefore, they are critical in industrial applications for enabling more environmentally friendly processes.
The efficiency of a catalyst is influenced by surface characteristics such as surface morphology and chemical composition.
The morphology can be changed by nanostructures produced by laser irradiation, and the chemical composition can be altered by reactive species produced by atmospheric pressure plasmas.
The combined treatment increases the efficiency by oxidising the surface.
However, this simultaneous interaction between laser, plasma, and surface is highly complex.
We investigated this complex interaction in regards to optimise the efficiency of a Cu catalyst for the CO2-Reduction Reaction (CO2-RR).
The electric fields and energy of pulsed laser irradiation produce Laser Induced Periodic Surface Structures (LIPSS) and Pulsed Laser Induced Dewetting Structures (PLIDS) which increase the effective area of the catalyst.
Different reactive oxygen species (ROS), such as O2(a), O2(b) and ozone, produced by a helium-oxygen plasma, are measured.
Up to 30% Cu2O and further up to 50 % CuO could be produced.
The combined treatment increases the overall selectivity to C2+ products.
Keywords: catalyst optimisation; laser-plasma-surface interaction; plasma jet; reactive oxygen species