title: Alloy Cu₃Pt nanoframes through the structure evolution in Cu-Pt nanoparticles with a core-shell construction.
abstract: 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.
authors.affiliation: 1] State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China 100190 [2] School of Engineering and Technology, China University of Geosciences, Beijing, China 100083.
authors.forename: Lin
authors.initials: L
authors.lastname: Han
authors.affiliation: State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China 100190.
authors.forename: Hui
authors.initials: H
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China 100190.
authors.forename: Penglei
authors.initials: P
authors.lastname: Cui
authors.affiliation: School of Engineering and Technology, China University of Geosciences, Beijing, China 100083.
authors.forename: Zhijian
authors.initials: Z
authors.lastname: Peng
authors.affiliation: State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China 100190.
authors.forename: Suojiang
authors.initials: S
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China 100190.
authors.forename: Jun
authors.initials: J
authors.lastname: Yang