Vakuumkammer im Oberflächenforschungslabor der TU Wien
Scientists at the Vienna University of Technology (TU Wien) have figured out how a platinum catalyst works. Its remarkable properties are not just due to the platinum, the iron-oxide substrate beneath also plays a role. Left: Tiny platinum nanoparticles on an iron oxide surface. center: H2 gas leads to trenches in the surface. right: O2 gas causes additional iron oxide islands to grow. Platinum is a great catalyst and can be used for many different applications. It's expensive stuff though, so tiny platinum nanoparticles sitting on cheap metal oxide materials are used to convert harmful carbon monoxide into carbon dioxide.
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