Preparation and electrochemical characterization of Pt nanoparticles dispersed on niobium oxide
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Keywords

Pt nanoparticles
sol-gel
electrocatalysis
niobium oxide

How to Cite

de Mello, R. L. S., Mattos-Costa, F. I., Villullas, H. de las M., & Bulhões, L. O. de S. (2003). Preparation and electrochemical characterization of Pt nanoparticles dispersed on niobium oxide. Eclética Química, 28(2), 69–76. https://doi.org/10.26850/1678-4618eqj.v28.2.2003.p69-76

Abstract

Electrodes consisting of Pt nanoparticles dispersed on thin films of niobium oxide were prepared
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.
https://doi.org/10.26850/1678-4618eqj.v28.2.2003.p69-76
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