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Nanoporous Pt hollow nanostructures with octahedral and hexagonal frame-like morphologies were prepared by a novel one-pot self-templating route with no assistance from a preformed template or shape-directing agent. The hexagonal frame-like Pt hollow structures exhibited significantly enhanced catalytic activity toward CO oxidation reaction compared to the octahedral Pt hollow nanostructures due to the higher oxidation state of Pt.
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Choi et al. (2014) studied this question.
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