Recently titania nanotube arrays (denoted as TiO2-NTs) attracted significant attention due to their easy preparation, self-ordering, large surface area, high uniformity, non-toxicity, chemical stability, excellent biocompatibility, and low production cost. Here we present the study of nanostructured Pt-Ni catalyst supported on the titania nanotube arrayed surface for the oxidation of borohydride. The Pt-Ni catalysts with different Pt loadings were deposited on the titania nanotube arrayed surface via galvanic displacement technique. The surface morphology and composition of the catalysts were examined using scanning electron microscopy and energy dispersive X-ray spectroscopy. The electrocatalytic activity of these catalysts was evaluated towards the electrooxidation of borohydride in an alkaline medium by means of cyclic voltammetry, chronoamperometry and chronopotentiometry.The prepared nanostructured Pt(Ni)/TiO2-NTs catalysts exhibited a higher electrocatalytic activity as compared to that of the bulk Pt and seem to be a promising support for fuel cell catalysts.

Nanostructured Pt-Ni catalyst supported on the titania nanotubes as electrocatalysts for borohydride oxidation

245th National Meeting (2013)

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