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2014

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0517–0529 (2014)

PACS numbers: 68.47.-h, 81.05.Ni, 81.16.Hc, 82.45.Jn, 82.45.Wx, 82.47.Wx

The modification of platinum electrode is carried out by deposition of the thin films of polyaniline (PAn) and metalpolymeric (palladium nano/microparticlespolyaniline) composite on its surface. Electrocatalytic properties of modified electrodes relative to the oxidation of methanol, formaldehyde, and formic acid within the 1.0 M aqueous H2SO4 solution are studied. As determined, the PAn-modified electrodes show electrocatalytic properties relative to the formaldehyde oxidation. Introduction of palladium nanoparticles into the polyaniline leads to the substantial increase of redox currents because of higher conductivity of such modified surface layer. Besides, as shown, the Pd particles promote a profound formaldehyde oxidation, namely, until carbon(II) oxide, while the final product at the used PAn-modified electrode is a formic acid.

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