Preparation of PtSn/C electrocatalysts by as alcohol-reduction process using different conditions for ethanol electro-oxidation
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2014
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PtSn/C electrocatalysts were prepared by an alcoholreduction process using Pt(C5H7O2)2 and SnCl4•5H2O as
metal precursors, a mixture of ethylene glycol:water as
both a solvent and reducing agent and Carbon Vulcan
XC72 as support. The electrocatalysts were prepared with
20 wt% of metal content and Pt:Sn atomic ratio of 50:50
using different conditions: under reflux (RFX) at 160°C for
3 h and in an autoclave (ATC) at 200°C under autogeneous
pressure for 30 min. The obtained PtSn/C electrocatalysts
were characterized by X-ray diffraction and cyclic
voltammetry. The electro-oxidation of ethanol was
evaluated by chronoamperometry in acid medium. A
similar performance was observed for commercial PtSn/C
BASF and PtSn/C RFX while PtSn/C ATC showed a
superior performance.
Como referenciar
RIBEIRO, V.A.; SEKOL, R.C.; TAYLOR, A.D.; OLIVEIRA NETO, A.; SPINACE, E.V. Preparation of PtSn/C electrocatalysts by as alcohol-reduction process using different conditions for ethanol electro-oxidation. ECS Transactions, v. 58, n. 25, p. 141-145, 2014. DOI: 10.1149/05825.0141ecst. Disponível em: http://repositorio.ipen.br/handle/123456789/22939. Acesso em: 13 May 2024.
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