Synthesis of worm-like PtCo nanotubes for methanol oxidation

Worm-like PtCo nanotubes are synthesized by galvanic exchange reaction using Co nanowires as templates. As a novel electrocatalyst for methanol oxidation, the as-prepared PtCo nanotubes display better activity and stability compared with commercial Pt/C catalyst.

► PtCo nanotubes were synthesized using Co nanowires as template.
► Abundant nanoflakes exist on each PtCo nanotube, forming worm-like shape.
► This is the first report on the electrochemical properties of PtCo nanotubes.
► PtCo nanotube catalyst shows good stability.