Alloy Cu3Pt nanoframes through the structure evolution in Cu-Pt nanoparticles with a core-shell construction

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作者：
Lin Han
Hui Liu
Penglei Cui
Zhijian Peng
Suojiang Zhang
Jun Yang
机构：
[1] State Key Laboratory of Multiphase Complex Systems,
[2] Institute of Process Engineering,undefined
[3] Chinese Academy of Sciences,undefined
[4] School of Engineering and Technology,undefined
[5] China University of Geosciences,undefined
来源：
Scientific Reports | / 4卷
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摘要：
Noble metal nanoparticles with hollow interiors and customizable shell compositions have immense potential for catalysis. Herein, we present an unique structure transformation phenomenon for the fabrication of alloy Cu3Pt nanoframes with polyhedral morphology. This strategy starts with the preparation of polyhedral Cu-Pt nanoparticles with a core-shell construction upon the anisotropic growth of Pt on multiply twinned Cu seed particles, which are subsequently transformed into alloy Cu3Pt nanoframes due to the Kirkendall effect between the Cu core and Pt shell. The as-prepared alloy Cu3Pt nanoframes possess the rhombic dodecahedral morphology of their core-shell parents after the structural evolution. In particular, the resulting alloy Cu3Pt nanoframes are more effective for oxygen reduction reaction but ineffective for methanol oxidation reaction in comparison with their original Cu-Pt core-shell precursors.
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