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Title: | Enhanced activity in ethanol oxidation of Pt<inf>3</inf>Sn electrocatalysts synthesized by microwave irradiation | Authors: | Stevanović, S. Tripković, D. Rogan, J. Minić, Dragica Gavrilović, A. Tripković, A. Jovanović, V. M. |
Keywords: | Enhanced activity;Ethanol oxidation;Microwave irradiation;Pt Sn electocatalyst 3 | Issue Date: | 1-Jan-2011 | Journal: | Russian Journal of Physical Chemistry A | Abstract: | High surface area carbon supported Pt and Pt3Sn catalysts were synthesized by microwave irradiation and investigated in the ethanol electro-oxidation reaction. The catalysts were obtained using a modified polyol method in an ethylene glycol solution and were characterized in terms of structure, morphology and composition by employing XRD, STM and EDX techniques. The diffraction peaks of Pt3Sn/C catalyst in XRD patterns are shifted to lower 2θ values with respect to the corresponding peaks at Pt/C catalyst as a consequence of alloy formation between Pt and Sn. Particle size analysis from STM and XRD shows that Pt and Pt3Sn clusters are of a small diameter (~2 nm) with a narrow size distribution. Pt3Sn/C catalyst is highly active in ethanol oxidation with the onset potential shifted for ~150 mV to more negative values and with ~2 times higher currents in comparison to Pt/C. |
URI: | https://dspace.ffh.bg.ac.rs/handle/123456789/1877 | ISSN: | 0036-0244 | DOI: | 10.1134/S0036024411130309 |
Appears in Collections: | Journal Article |
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