Preparation and electrochemical characterization of Pt nanoparticles dispersed on niobium oxide
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onto titanium substrates by a sol-gel method. The physical characterization of these electrodes was carried
out by X-ray diffraction, scanning electron microscopy and energy dispersive X-ray analysis. The mean
size of the Pt particles was found to be 10.7 nm. The general aspects of the electrochemical behavior were
studied by cyclic voltammetry in 1 mol L -1 HClO 4 aqueous solution. The response of these electrodes in
relation to the oxidation of formaldehyde and methanol in acidic media was also studied.
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