Morphology and dimensionality are key factors to affect the catalytic activity and durability of Pt-based nanocatalysts. In this work, dendritic porous three-dimensional PtPdRu (PtPdRu-3D) nanocatalysts were fabricated by a facile one-pot hydrothermal strategy with triblock pluronic copolymer P123 as the reducer, stabilizer and structure director. Compared with zero-dimensional PtPdRu (PtPdRu-0D) and two-dimensional PtPdRu (PtPdRu-2D) and commercial Pt/C, PtPdRu-3D showed ultrahigh electrochemical surface areas (ECSA), and demonstrated an outstanding electrocatalytic activity towards methanol oxidation reaction (MOR), specifically 2.9 times higher than that of PtPdRu-0D, 1.3 times higher than PtPdRu-2D, and 1.7 times higher than commercial Pt/C. Besides, durability tests demonstrated that PtPdRu-3D displayed the lowest ECSA decay (from 100% to 80.81%) due to its 3D open-framework surface which can restrain the individual particles from aggregating.
- Electrocatalytic activity
- PtPdRu ternary nanocatalysts