Precious metals play an important role in the chemical industry as catalysts: With the help of silver, platinum, palladium or other elements, chemical reactions can take place that would otherwise not progress or would only progress at a much lower reaction rate. These metals are often used in the form of tiny nanoparticles. However, how well they work also depends on the surface on which they are placed. Nanoparticles on a carbon base seem to work particularly well - the reason for this was unknown for a long time.