Palladium catalyst modified with molybdenum bronze as a possible alternative to platinum in the methanol oxidation reaction
| Autor: | Vitaly V. Kuznetsov, R. S. Batalov, Boris I. Podlovchenko |
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| Rok vydání: | 2015 |
| Předmět: |
Inorganic chemistry
chemistry.chemical_element Molybdenum bronze 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrocatalyst 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound chemistry X-ray photoelectron spectroscopy Molybdenum Inductively coupled plasma atomic emission spectroscopy Electrochemistry General Materials Science Electrical and Electronic Engineering 0210 nano-technology Platinum Palladium |
| Zdroj: | Journal of Solid State Electrochemistry. 20:589-595 |
| ISSN: | 1433-0768 1432-8488 |
| DOI: | 10.1007/s10008-015-3052-z |
| Popis: | nPd(H x − 2n MoO3)/GC electrodes were prepared by the surface reaction between red molybdenum bronze (H x MoO3, x ≈ 1.55) and palladium ions under the open-circuit conditions. The synthesized composites were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and inductively coupled plasma atomic emission spectroscopy (AES ICP). nPd(H x − 2n MoO3)/GC electrodes showed unusually high catalytic activity toward the methanol oxidation reaction (MOR), significantly higher than that of the electrodeposited palladium and not inferior to the platinum in the Pt/C catalysts. The effect of acceleration of MOR was explained by the bifunctional catalysis mechanism involving molybdenum bronzes. An important role of the Pd/molybdenum bronzes boundaries has been assumed. |
| Databáze: | OpenAIRE |
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