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With increasing oxygen (red) concentration, an oxide sandwich forms on the surface of the metallic nanoparticles, inhibiting the desired reaction of carbon monoxide to carbon dioxide. At the edges, however, the oxide sandwich brakes up, leaving free active sites for catalysis. The more edges the nanoparticles posses, the more efficient will the catalytic converter work. Credit: DESY, Lucid Berlin

Edges and corners increase efficiency of catalytic converters

Catalytic converters for cleaning exhaust emission are more proficient when they utilize nanoparticles with numerous edges. This is one of the discoveries of an...