Comparative study on the catalytic activity between Pt-decorated Ru and Ru-decorated Pt core-shell nanocatalyst toward methanol electro-oxidation
| Autor: | Karaked Tedsree, Apicha Thanatsiri |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis Core shell chemistry.chemical_compound Adsorption chemistry Surface structure Methanol Pt nanoparticles Cyclic voltammetry 0210 nano-technology Nuclear chemistry |
| Zdroj: | Materials Today: Proceedings. 5:10954-10963 |
| ISSN: | 2214-7853 |
| Popis: | The correlation between methanol electro-oxidation activity and surface structure of Pt-decorated Ru nanoparticles (Pt@Ru core-shell nanoparticles) and Ru-decorated Pt nanoparticles (Ru@Pt core-shell nanoparticles) was investigated. PtRu core-shell nanoparticles with different ratios of the core to shell were prepared by successive reduction. The core-shell structure was characterized by XRD and CO adsorption probe techniques. The electrocatalytic activity was analyzed by cyclic voltammetry. The maximum activity of Pt@Ru core-shell toward methanol electro-oxidation is 3:1 while the maximum activity of Ru@Pt core-shell is 1:2. Both samples contain Ru about 33% and Pt about 67% on the surface. Ru@Pt nanoparticles exhibited higher catalytic activity than Pt@Ru nanoparticles due to the difference in electronic promotion at interface. |
| Databáze: | OpenAIRE |
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