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Regensburg 2019 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 15: Energy materials (other than photovoltaics)

HL 15.4: Vortrag

Dienstag, 2. April 2019, 10:15–10:30, H33

Pre-activating CO2 for Photocatalytic Reduction at the Semiconductor SurfaceHongting Wu, Veronika König, Peter Budweiser, •Jacek Stolarczyk, and Jochen Feldmann — Chair for Photonics and Optoelectronics, Department of Physics, Ludwig-Maximilians-Universität, Munich, Germany

Photocatalytic properties of semiconductor nanostructures are drawing much attention in recent researches because it provides possibilities to harvest solar energy and change it directly into chemical energy. Among all the possible photocatalytic reactions, CO2 reduction remains to be much more challenging than others due to its stable C-O double bonds and its linear molecular structure. This makes it especially energetically costly to bring a single electron onto the molecule, which is the first step for most CO2 photo-reduction reaction-chains. Recently Copper (I) compounds have been proved to be promising in forming simple, yet efficient photocatalytic nanostructures for CO2 reductions. We use Cu2O nanoparticles with the aim to improve the overall efficiency of CO2 reduction by exploring ways to pre-activate CO2 molecules and hence lowering the potential barrier for the initial one electron transfer in the CO2 reduction reaction-chain.

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