nPt0 (Hx−2nMoO3) as a promising catalyst for the oxidation of methanol. Synthesis and electrocatalytic properties
| Autor: | V.V. Kusnetsov, Boris I. Podlovchenko, R.I. Shakurov, K. V. Kavyrshina, S.E. Lyahenko |
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| Rok vydání: | 2014 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element Condensed Matter Physics Redox Potassium tetrachloroplatinate Catalysis chemistry.chemical_compound Fuel Technology X-ray photoelectron spectroscopy chemistry Molybdenum Methanol Platinum Carbon monoxide |
| Zdroj: | International Journal of Hydrogen Energy. 39:829-836 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2013.10.128 |
| Popis: | A new method for the synthesis of the catalyst systems Pt–Mo was suggested. nPt0(Hx−2nMoO3)/GC electrodes were prepared by a redox reaction between the hydrogen-containing molybdenum bronzes and potassium tetrachloroplatinate (II) in acid solutions at open circuit potential. The electrodes were characterized by CVA, SEM, X-ray microanalysis, XRD, XPS and ICP-AES. Pt0conglomerates formation with nonuniform distribution over the molybdenum bronzes surface has been revealed. nPt0(Hx−2nMoO3)/GC electrodes showed high catalytic activity (not inferior to Pt–Ru-catalyst) in the oxidation of carbon monoxide and methanol as compared with Pt/GC-electrodes. Catalytic effect is apparently achieved by effective oxidation of strongly chemisorbed species (COads, HCOads), which occurs at boundaries platinum – molybdenum oxide. Therefore nPt0(Hx−2nMoO3) can be considered as one of perspective catalysts for DMFC. |
| Databáze: | OpenAIRE |
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