eng Science and Education Publishing American Journal of Nanomaterials 2372-3122 2016-05-21 4 1 8 11 10.12691/ajn-4-1-2 AJN2016412 article Dilan Atbas 1 Aykut ?a?lar 1 Hilal Kivrak hilalkivrak@gmail.com, hilalkivrak@yyu.edu.tr 1 Arif Kivrak 2 Chemical Engineering Department, Yüzüncü Yıl University, Van, Turkey Department of Chemistry, Yüzüncü Yıl University, Van, Turkey In the present work, bi-metallic Pt-Sn electro catalysts were prepared by microwave assisted polyol method at 9:1, 7:3, and 5:5 Pt: Sn atomic ratios on carbon nanotube. The ethanol electro-oxidation activities of these catalysts were measured by cyclic voltammetry (CV). The effect of Sn addition to Pt for the improvement of ethanol electro-oxidation was also measured by CV measurements. Pt-Sn (07:03) catalyst exhibits the highest ethanol electro-oxidation activity. Furthermore, the rotating disk measurements were performed at 0-2000 rpm rotating rates on Pt-Sn (07:03) catalyst. The effect of ethanol concentration on ethanol electro-oxidation activity at varying ethanol concentrations (0.03 M-8.00 M) were measured on Pt-Sn (07:03) catalyst. CO stripping measurements were performed to determine the CO resistance of Pt-Sn electrocatalysts. As a result, CO oxidation onset potential decreases by the addition of Sn to Pt, revealing that Sn addition promotes the CO resistance of platinum. http://pubs.sciepub.com/ajn/4/1/2/ajn-4-1-2.pdf ethanol electro-oxidation microwave assisted polyol method DEFCs Pt:Sn catalysts cyclic voltammetry