Structure and electrochemical properties of composite films based on poly-3,4-ethylenedioxythiophene with metallic palladium inclusions

Abstract

The electrochemical behavior of PEDOT/Pd composite films obtained by the chemical deposi tion of ultradisperse Pd particles in the poly 3,4 ethylenedioxythiophene (PEDOT) polymer matrix was studied. The structure of the films was determined by electron microscopy and energy dispersion X ray flu orescence analysis. The electrochemical properties of PEDOT/Pd composite films in solutions containing hydrogen peroxide was also studied. Special attention was paid to the effect of the time of the chemical dep osition of palladium in the polymer structure on the electroreduction of hydrogen peroxide in phosphate buffer solutions.

Pd-modified PEDOT layers obtained through electroless metal deposition—electrooxidation of glycerol

“…Pd electroless deposition (at the expense of CP oxidation) was studied in the case of polyaniline [31][32][33] and PEDOT [34][35][36][37][38], and the obtained electrocatalysts were tested for oxidation of hydrazine [32,38] and reduction of hydrogen peroxide [37] and nitrate ions [34]. The investigations on the electroless deposition of Pd on PEDOT [34][35][36][37][38] show that this approach is a suitable way of obtaining well-dispersed metallic phase. Studies using PEDOT-supported Pd NPs carried out in neutral solutions [38] give evidence for the possibility to use these materials for amperometric determination of hydrazine.…”

Nanocomposite electrode materials based on poly(3,4-ethylenedioxythiophene) with incorporated gold and palladium: Preparation and morphology study

“…We have investigated electrochemical behavior of the PEDOT/Pd and PEDOT/Au composite films [8][9][10] and morphology of the PEDOT/Pd films [11]. Morphology of the PEDOT/Au films has not been studied in detail in the above-cited papers.…”

“…Such hybrid organicinorganic materials are especially interesting due to the advantageous functional properties of the highly disperse nanostructured matter incorporated into the conductive matrix [1][2][3][4][5][6][7]. In general, such composites exhibit properties combining those typical of the conductive polymer constituting the matrix and those of the incorporated metal nanoparticles.We have previously demonstrated [8][9][10][11] that redox interaction between the reduced form of poly(3,4-ethylenedioxythiophene) (PEDOT) and ions of electropositive metals (palladium or gold) can be applied to produce metal nanoparticles at the polymer surface and inside its pores. We have investigated electrochemical behavior of the PEDOT/Pd and PEDOT/Au composite films [8-10] and morphology of the PEDOT/Pd films [11].…”

“…We have previously demonstrated [8][9][10][11] that redox interaction between the reduced form of poly(3,4-ethylenedioxythiophene) (PEDOT) and ions of electropositive metals (palladium or gold) can be applied to produce metal nanoparticles at the polymer surface and inside its pores. We have investigated electrochemical behavior of the PEDOT/Pd and PEDOT/Au composite films [8][9][10] and morphology of the PEDOT/Pd films [11].…”

Insights into the spontaneous formation of hybrid PdOx/PEDOT films: electroless deposition and oxygen reduction activity

“…1a), and the electrocatalytic activity of the hybrid lms toward the ORR. Previously, spontaneous electroless deposition using Pd 2+ ions and PEDOT has been reported exclusively in acidic aqueous conditions, [20][21][22] and the chemical nature (e.g. Pd valence) of the as-deposited Pd species has not been studied.…”