Synthesis of Pt+SnO2/C electrocatalysts containing Pt nanoparticles with preferential (100) orientation for direct ethanol fuel cell
| Autor: | Júlio César M. Silva, A. Oliveira Neto, E.V. Spinacé, Rodolfo M. Antoniassi |
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| Rok vydání: | 2017 |
| Předmět: |
Process Chemistry and Technology
Inorganic chemistry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrocatalyst Electrochemistry Direct-ethanol fuel cell 01 natural sciences Catalysis 0104 chemical sciences chemistry Phase (matter) Crystallite Pt nanoparticles 0210 nano-technology Selectivity Carbon General Environmental Science |
| Zdroj: | Applied Catalysis B: Environmental. 218:91-100 |
| ISSN: | 0926-3373 |
| Popis: | The synthesis of Pt + SnO2/C electrocatalyst containing cubic Pt nanoparticles with preferential (100) orientation was performed by an alcohol-reduction process using KBr as a shape directing agent. The order of addition of the Pt and Sn precursors and KBr was crucial to obtain cubic Pt particles and a SnO2 phase with small particle sizes highly dispersed on the carbon support. Electrochemical and DEFC experiments showed that Pt + SnO2/C electrocatalyst containing Pt nanoparticles with preferential (100) orientation provided superior activity for EOR, power densities and CO2 selectivity compared to Pt + SnO2/C electrocatalyst containing Pt polycrystalline. |
| Databáze: | OpenAIRE |
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