Graphene-supported palladium phosphide PdP2 nanocrystals for ethanol electrooxidation
We present a procedure to produce single-phase PdP nanocrystals (NCs). The approach involves the reaction of palladium(II) acetylacetonate and hexamethylphosphoroustriamide to nucleate defective Pd P nanoparticles that subsequently, with further phosphorous incorporation, crystallize into PdP . The...
| Autores: | , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:218096 |
| Acceso en línea: | https://ddd.uab.cat/record/218096 https://dx.doi.org/urn:doi:10.1016/j.apcatb.2018.09.105 |
| Access Level: | acceso abierto |
| Palabra clave: | Palladium diphosphide Colloidal synthesis Electrocatalysis Ethanol oxidation |
| Sumario: | We present a procedure to produce single-phase PdP nanocrystals (NCs). The approach involves the reaction of palladium(II) acetylacetonate and hexamethylphosphoroustriamide to nucleate defective Pd P nanoparticles that subsequently, with further phosphorous incorporation, crystallize into PdP . The synthesized PdP NCs were supported on reduced graphene oxide (rGO) and applied as electrocatalysts for ethanol oxidation. The activity of PdP toward the ethanol oxidation reaction (EOR) was over a threefold higher than that of Pd NCs prepared under similar conditions. Even better performance was obtained from PdP NCs supported on rGO, which showed current densities up to 51.4 mA cm and mass activities of 1.60 A mg , that is 4.8 and 15 times higher than Pd NCs. Besides, PdP NCs and PdP /rGO catalysts showed improved stability during EOR than Pd NCs and Pd/rGO. |
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