Abstract
Ordered NiO–TiO2 nanotube arrays (NiO–TiO2NTs) were fabricated on titanium–nickel (Ti–Ni) alloy substrate by anodic oxidation of Ti–Ni alloy foil and subsequently investigated as a catalyst support for methanol oxidation. The field emission scanning electron microscopy (FESEM) results demonstrate that NiO–TiO2NTs have the feature of regular tubular structure, which is advantageous to support catalysts for methanol oxidation reactions. The electrochemical results show that Pt nanoparticles supported on NiO–TiO2NTs have similar functionalities as PtNi alloy nanoparticles supported on TiO2 nanotube arrays for methanol oxidation. The NiO–TiO2NTs catalyst support developed here can be easily synthesized and thus show promising application prospect in direct methanol fuel cells (DMFC).
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