Publicação: Methanol oxidation on PtRu/C electrocatalysts prepared by a microemulsion method
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PtRu/C nanocatalysts were prepared by a microemulsion method using different values of water/surfactant molar ratio in order to get different particle sizes. Crystallite sizes and structural properties were determined by X-ray diffraction. Particle size and distribution were characterized by transmission electron microscopy and average composition was determined by energy dispersive X-ray analysis. Differential scanning calorimetry measurements indicated the presence of oxides in the as-prepared catalysts. The general electrochemical behavior was evaluated by cyclic voltammetry in 0.5 M sulfuric acid and the electrocatalytic activity towards the oxidation of methanol was studied in 0.5 M methanol acid solutions by potential sweeps and chronoamperometry. copyright The Electrochemical Society.
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(p ,p ,t) measurements, (PL) properties, Acid solutions, Average composition, Electrocatalytic activity (ECA), Electrochemical behaviors, Electrochemical Society (ECS), Energy dispersive X ray analysis (EDAX), General (CO), In order, methanol oxidation, Microemulsion methods, molar ratios, Nano-catalysts, PtRu/C electrocatalysts, Scanning calorimetry, X ray diffraction (XRD), Bioelectric phenomena, Blood vessel prostheses, Catalysis, Chemical analysis, Chemical modification, Chemical oxygen demand, Chemistry, Chronoamperometry, Cyclic voltammetry, Differential scanning calorimetry, Electrocatalysis, Electrocatalysts, Electrochemical oxidation, Electrochemistry, Electrolysis, Electron microscopes, Electron microscopy, Electron optics, Grain size and shape, Imaging techniques, Methanol, Microemulsions, Microscopic examination, Oxidation, Particle size, Particle size analysis, Scanning, Size distribution, Steel analysis, Structural properties, Sulfuric acid, Transmission electron microscopy, Voltammetry, X ray diffraction analysis, X rays, X ray analysis
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ECS Transactions, v. 3, n. 32, p. 11-17, 2007.
