Porous Cu-rich@Cu3Pt alloy catalyst with a low Pt loading for enhanced electrocatalytic reactions
The core-shell nanostructures are used to improve the specific activity of catalysts in electrooxidation reactions. We report a porous Cu-rich@Cu3Pt core-shell using a seeding method. In this method, a hetero-nucleation process is carried out in the presence of cubic Cu2O seeds. Cu-rich@Cu3Pt core-s...
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| Published in: | Journal of alloys and compounds 2017, Vol.691, p.26-33 |
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| Main Authors: | , , , , , , , , |
| Format: | Article |
| Language: | eng |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | The core-shell nanostructures are used to improve the specific activity of catalysts in electrooxidation reactions. We report a porous Cu-rich@Cu3Pt core-shell using a seeding method. In this method, a hetero-nucleation process is carried out in the presence of cubic Cu2O seeds. Cu-rich@Cu3Pt core-shell is used as an electrocatalyst in electrooxidation reactions. According to the data obtained using transmission electron microscopy (TEM), energy dispersive X-ray analysis (EDX), and X-ray diffraction (XRD), Cu-rich@Cu3Pt has a porous nanostructure and dominant {111} facets. It consists of a well-defined core-shell structure in which a Cu-rich phase is the core and Cu3Pt alloy is the shell. The porous Cu-rich@Cu3Pt exhibits an excellent electrocatalytic performance in methanol oxidation reaction (MOR) and oxygen reduction reaction (ORR).
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•The porous Cu-rich@Cu3Pt alloy NPs were synthesized by a seeding method.•The porous Cu-rich@Cu3Pt exhibited a well-defined core-shell.•The Cu-rich@Cu3Pt consisted of Cu-rich phase core and Cu3Pt alloy shells.•The porous Cu-rich@Cu3Pt exhibited an improved performance in MOR and ORR. |
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| ISSN: | 0925-8388 1873-4669 |