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Abstract
Here we report on the synthesis of novel dendritic Pt3Cu triangular pyramid caps via a solvothermal coreduction method. These caps had three-dimensional caved structures with ultrathin branches, as evidenced by high-resolution transmission electron microscopy (HRTEM) and HAADF-STEM characterization. Tuning the reduction kinetics of two metal precursors by an iodide ion was believed to be the key for the formation of an alloyed nanostructure. Electro-oxidation of methanol and formic acid showed dramatically improved electrocatalytic activities and poison-tolerance for these nanoalloys as compared to commercial Pt/C catalysts, which was attributed to their unique open porous structure with interconnected network, ultrahigh surface areas, as well as synergetic effect of the two metallic components.
Original language | English |
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Pages (from-to) | 17748-17752 |
Number of pages | 5 |
Journal | ACS Applied Materials & Interfaces |
Volume | 6 |
Issue number | 20 |
Early online date | 7 Oct 2014 |
DOIs | |
Publication status | Published - 22 Oct 2014 |
Keywords
- anti-CO poisoning
- dendritic pyramid cap
- fuel oxidation
- Pt3Cu alloy
- ultrathin branch
ASJC Scopus subject areas
- General Materials Science
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Dive into the research topics of 'Ultrathin dendritic Pt3Cu triangular pyramid caps with enhanced electrocatalytic activity'. Together they form a unique fingerprint.Projects
- 1 Finished
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Towards an Atomic-scale understanding of the 3D Structures of size-selected Clusters on Surfaces
Li, Z. (Principal Investigator), Johnston, R. (Co-Investigator) & Palmer, R. (Co-Investigator)
Engineering & Physical Science Research Council
1/02/10 → 17/01/14
Project: Research Councils