The shape of catalytic nanoparticles affects their surface area, the number of active sites, and the exposure of specific crystallographic planes. Different shapes, such as cubes, rods, and octahedrons, expose different facets of the material, which can have various catalytic properties. For instance, certain facets may have a higher density of active sites or may be more resistant to deactivation, thereby enhancing the efficiency and lifespan of the catalyst.
