AMORIM, ALINEPARREIRA, LUANNA S.SILVA, JULIO C.M.SANTOS, MAURO C. dos2018-02-192018-02-192017AMORIM, ALINE; PARREIRA, LUANNA S.; SILVA, JULIO C.M.; SANTOS, MAURO C. dos. Electrooxidation of mixed ethanol and methanol solutions on PtSn/C electrocatalysts prepared by the polymeric precursor method. <b>Journal of the Brazilian Chemical Society</b>, v. 28, n. 6, p. 1091-1097, 2017. DOI: <a href="https://dx.doi.org/10.21577/0103-5053.20160266">10.21577/0103-5053.20160266</a>. DisponÃvel em: http://repositorio.ipen.br/handle/123456789/28483.0103-5053http://repositorio.ipen.br/handle/123456789/28483Different mass ratio proportions of PtSn (m/m) electrocatalysts with 20% metal loading on a carbon support were prepared for use in ethanol:methanol solutions oxidation reactions. PtSn/C (3:1) (91% alloy degree, lattice parameter of 0.399 nm and mean crystallite size 4.8 nm) presented the best activity for oxidation of mixed solutions. The highest normalized current (ethanol:methanol 80:20) was 4.2 mA mgPt -1 (measured after 1800 seconds at 0.5 V). Therefore, the PtSn/C (3:1) electrocatalyst with an atomic ratio of 65:35 enhanced both the electronic effect and bifunctional mechanism in (ethanol:methanol 80:20), which resulted in the formation of CO2 at low potentials, as well as the highest amount of by-products than ethanol and methanol.1091-1097openAccesselectrodesoxidationmethanolplatinum alloystin oxideselectrocatalystsfourier transformationattenuationspectroscopyElectrooxidation of mixed ethanol and methanol solutions on PtSn/C electrocatalysts prepared by the polymeric precursor methodArtigo de periódico62810.21577/0103-5053.2016026637.13