کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6455628 | 1419764 | 2017 | 8 صفحه PDF | دانلود رایگان |
- Decahedral platinum crystals were synthesized in the presence of graphite nanosheets.
- Pt decahedra decorated graphene nanosheets show outstanding performance for FAO.
- The superior activity is well correlated with the unique structures of Pt decahedra.
Synthesis of five-twined platinum decahedra is currently a great challenge. Reported herein is a solution synthesis of ultrafine decahedral platinum crystals (average size 5.9Â nm) mediated by graphite nanosheets together with poly (dimethyl diallyl ammonium chloride). The graphite nanosheets play a critical role in the formation of Pt decahedra. The obtained Pt decahedral crystals provide a valuable platform for the fundamental study of facet-dependent activity of platinum. The hybrid of Pt decahedral crystal decorated graphite nanosheets shows outstanding activity and durability for the oxidation of formic acid. The hybrid possesses a remarkable current density of 4.3Â mAÂ cmâ2, which is 2 times that of state-of-the-art Pt/C catalyst. The superior catalytic performance is well correlated with the unique structures of decahedral Pt crystals. The synthesis protocol disclosed in this study would pave a new route to fabricate high-performance electrocatalysts for fuel cells.
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Journal: Journal of Catalysis - Volume 345, January 2017, Pages 70-77