Radiolysis route to Pt nanodendrites with enhanced comprehensive electrocatalytic performances for methanol oxidation

• Pt nanodendrites with controlled size were prepared by a rapid radiolysis route.
• Pt nanodendrites display enhanced electrochemical catalytic performances.
• Pt nanodendrites exhibit a good CO tolerance for methanol oxidation.

Unique Pt nanodendrites with controlled size were prepared by a rapid radiolysis route. The Pt nanodendrites display drastically enhanced electrochemical catalytic performances toward methanol oxidation. They exhibit a better CO tolerance for methanol oxidation compared with commercial catalysts and other nanodendritic Pt-based catalysts.