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The purpose of this investigation was to compare catalysts produced by the Bönnemann -colloidal method (PtRu (B1) and PtRu (B2)), and those produced by the spontaneous deposition method (PtRu (SD)). The catalysts produced by both methods had good electrochemical behavior for methanol oxidation for proton exchange membrane fuel cell applications. The structure of the catalyst was examined by transmission electron microscopy (TEM). Energy dispersive spectroscopic analysis (EDS) was used todoi:10.1590/s1516-14392005000200003 fatcat:seyednjgefahno4rleyio5r5mi