Platinum Nanocages (IMAGE)
Caption
Researchers have developed a technique for producing platinum hollow nanocages with ultra-thin walls that could dramatically reduce the amount of the costly metal needed to provide catalytic activity in such applications as fuel cells. The image shows models of the (left) cubic and (octahedral) nanocages, whose surfaces are covered by atoms in square and hexagonal arrays, respectively. The yellow spheres correspond to platinum atoms while the green spheres indicate a small fraction of palladium atoms remaining in the lattice of platinum atoms.
Credit
Credit: Xia Laboratory
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