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Collapse in crystalline structure and decline in catalytic activity of Pt nanoparticles on reducing particle size to 1 nm

【摘要】:正Platinum has been playing a vital role in heterogeneous catalysis,especially for low temperature fuel cells.To maximize Pt utilization,nanoparticles are usually applied,with the particle size expected to be as small as possible.However,the particle-size dependent catalytic activity of Pt,determined by the interplay of surface geometric and electronic factors, is not quite straightforward in the range of a few nanometers.For CO_(ads) oxidation,methanol

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