• platinum nanoparticle-decorated tio2 nanotube arrays as new highly active and non-poisoning catalyst for photo-electrochemical oxidation of galactose

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
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     platinum nanoparticles were doped on the tio2 nanotube using a microemulsion method. the tio2 nanotube arrays were successfully fabricated by the anodizing of titanium sheets. the morphology and surface analysis of the pt-tio2 nanotubes were investigated using sem, edx and xrd respectively. the electro-oxidation of galactose on this catalyst in alkaline medium was studied using cyclic voltammetry and chronoamperometry methods. the results showed that the oxidation peak currents on the pt-tio2 nanotubes for galactose oxidation are larger than those on a smooth platinum electrode and confirmed the better electro-catalytic activity and stability of these new catalysts. the photo-catalytic properties of the tio2 make the pt-tio2 nanotubes electrode reusable after a short uv treatment, and the electro-oxidation current density of the pt-tio2 nanotubes after uv-cleaning can be re-established.

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