1. Salt-templated platinum–palladium porous macrobeam synthesis
- Author
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Fred J Burpo, Stephen F. Bartolucci, Anchor R. Losch, Deryn D. Chu, Alexander N. Mitropoulos, Enoch A. Nagelli, Joshua P. McClure, and David R. Baker
- Subjects
chemistry.chemical_classification ,Materials science ,Salt (chemistry) ,chemistry.chemical_element ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Electrochemistry ,01 natural sciences ,0104 chemical sciences ,Catalysis ,Accessible surface area ,chemistry ,Chemical engineering ,General Materials Science ,Texture (crystalline) ,0210 nano-technology ,Porosity ,Platinum ,Palladium - Abstract
Here we present the synthesis of porous platinum–palladium macrobeams templated from high aspect ratio Magnus’ salt needle derivatives. The combination of [PtCl4]2− and/or [PdCl4]2− with [Pt(NH3)4]2+ ions results in salt needles ranging from 15 to 300 µm in length. Electrochemical reduction of the salt templates results in porous macrobeams with a square cross-section. Porous side wall texture and elemental composition was controlled with initial platinum to palladium salt ratio. Macrobeam free-standing films exhibited a specific capacitance up to 11.73 F/g and a solvent accessible surface area of 26.6 m2/g. These salt-templated porous platinum–palladium macrobeams offer a promising material for fuel cell catalysis.
- Published
- 2019