The effect of carbon nanofiber properties as support for PtRu nanoparticles on the electrooxidation of alcohols

► Small PtRu nanoparticles (2 nm) were supported on different carbon nanofibers. ► The electrooxidation of methanol is favored on highly graphitic PtRu/CNF catalysts. ► The electrooxidation of ethanol is instead favored on highly porous PtRu/CNF. ► The CNF pore volume plays an determining role in the electrooxidation of ethanol.