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- W2580456839 abstract "The aim of this work is to present the results obtained for the synthesis of Pd NPs by the modified-polyol method with Vulcan XC-72R as support. Two different ways were used to synthesize catalysts: (a) Maintaining the initial pH of the synthesis equal to 12 and changing the initial concentration of the precursor to obtain an overall 10 wt.% nominal Pd load; (b) Fixing the initial concentration of the precursor at 2[Formula: see text]mM whilst changing the initial pH of the synthesis at different values to obtain an overall 10[Formula: see text]wt.% nominal Pd load. Catalysts were characterized using X-ray diffraction (XRD), Transmission electron microscopy (HRTEM, TEM, STEM) and cyclic voltammetry (CV). This work shows that the density of NPs generated during the nucleation process is a consequence of the fluctuation of the concentration. The standard deviation of the diameters varied linearly with the mean volume for values between 0.5[Formula: see text]mM and 6[Formula: see text]mM, demonstrating that there was a clear separation between nucleation and growth processes. The final mean diameter strongly depends on the initial pH of the synthesis for the same initial concentration of the precursor; mean diameters are smaller for basic media. The analysis of the voltammograms allowed the determination of the coverage fraction of oxygen on Pd, obtaining a value of 0.51 with a structure type [Formula: see text]. The coverage value found for CO is 0.71 with a structure type [Formula: see text]CO." @default.
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- W2580456839 date "2017-08-11" @default.
- W2580456839 modified "2023-09-26" @default.
- W2580456839 title "Chemical Synthesis and Characterization of Carbon Supported Palladium Electro-Catalysts" @default.
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- W2580456839 doi "https://doi.org/10.1142/s0219581x17500077" @default.
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