Günther Rupprechter is a full professor of surface and interface chemistry and Head of the Institute of Materials Chemistry at TU Wien. He is renowned for his contributions to physical chemistry, surface science, nanoscience and nanotechnology, particularly in the area of catalytic surface reactions on heterogeneous catalysts, identifying fundamental reaction steps at the atomic level by in situ and operando spectroscopy and microscopy. From 2011 to 2019, he was Speaker/Coordinator of the FWF-funded Special Research Program (SFB) “Functional Oxide Surfaces and Interfaces (FOXSI)”.