Synthesis of Pt nanoparticles with preferential (1 0 0) orientation directly on the carbon support for Direct Ethanol Fuel Cell
| Autor: | Jorge Moreira Vaz, Larissa Otubo, A. Oliveira Neto, Rodolfo M. Antoniassi, E.V. Spinacé |
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| Rok vydání: | 2016 |
| Předmět: |
Inorganic chemistry
chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Direct-ethanol fuel cell 01 natural sciences Catalysis 0104 chemical sciences chemistry Transmission electron microscopy Crystallite Physical and Theoretical Chemistry Cyclic voltammetry Pt nanoparticles 0210 nano-technology Selectivity Carbon |
| Zdroj: | Journal of Catalysis. 342:67-74 |
| ISSN: | 0021-9517 |
| Popis: | The synthesis of Pt nanoparticles with preferential (1 0 0) orientation directly supported on carbon was done by an alcohol-reduction process using KBr as a shape directing agent. The synthesis conditions were varied and the obtained materials were characterized by transmission electron microscopy and cyclic voltammetry. The order of addition of the Pt precursor and KBr was crucial to obtain cubic Pt nanoparticles with small particle size highly dispersed on the carbon support. DEFC experiments showed that Pt nanoparticles with preferential (1 0 0) orientation supported on carbon provided superior power densities and CO 2 selectivity compared to supported polycrystalline Pt nanoparticles. |
| Databáze: | OpenAIRE |
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