CORDEIRO, GUILHERME L.USSUI, VALTERMESSIAS, NILDEMAR A.PIASENTIN, RICARDO M.LIMA, NELSON B. deNETO, ALMIR O.LAZAR, DOLORES R.R.2017-05-082017-05-082017CORDEIRO, GUILHERME L.; USSUI, VALTER; MESSIAS, NILDEMAR A.; PIASENTIN, RICARDO M.; LIMA, NELSON B. de; NETO, ALMIR O.; LAZAR, DOLORES R.R. Effect of Sn loading on the characteristics of Pt electrocatalysts supported on reduced graphene oxide for application as direct ethanol fuel cell anode. <b>International Journal of Electrochemical Science</b>, v. 12, p. 3795-3813, 2017. DOI: <a href="https://dx.doi.org/10.20964/2017.05.68">10.20964/2017.05.68</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/27421.1452-3981http://repositorio.ipen.br/handle/123456789/27421The effect of Sn loading (5–30 mol %) on Pt catalysts supported on reduced graphene oxide was investigated for ethanol electro-oxidation in acidic medium. Reduced graphene oxide was synthesized via graphite oxidation–exfoliation process in liquid phase and chemical reduction. Pt and PtxSny catalysts were deposited on reduced graphene oxide by a NaBH4 impregnation–reduction method. The adopted procedures allowed the synthesis of graphene-like nanosheets where single Sn-doped Pt nanoparticles were impregnated. Pt lattice parameter and micro-strain increased with Sn addition, confirming the formation of a solid solution. Concerning ethanol electro-oxidation, Pt was more active when supported on reduced graphene oxide whereas the introduction of Sn enhanced the catalyst activity, leading to lower ethanol oxidation potentials and higher current densities.3795-3813openAccessplatinumtinethanoloxidationgrapheneelectrocatalystsdirect ethanol fuel cellsArtigo de periódico1210.20964/2017.05.68https://orcid.org/0000-0001-7384-304Xhttps://orcid.org/0000-0002-9287-6071https://orcid.org/0000-0002-6444-922423.21