PEDOT-supported Pd nanocatalysts - oxidation of formic acid

Publikationen: Beitrag in FachzeitschriftArtikelForschung(peer-reviewed)

Autoren

Organisationseinheiten

Externe Organisationseinheiten

  • Bulgarian Academy of Sciences
  • Christian Doppler Labor für Faserquellung und Papierleistung, Graz

Abstract

Palladium (Pd) nanocatalysts are obtained by electroless deposition of Pd on pre-reduced poly(3,4-ethylenedioxythiophene) (PEDOT) layers doped with either polystyrenesulfonate (PSS) or dodecylsulfate (SDS) ions. The PEDOT-supported Pd catalysts are investigated with respect to formic acid (FA) oxidation in slightly acidic solution under voltammetric and chronoamperometric conditions. Atomic force microscopy (AFM) and Scanning electron microscopy (SEM) studies are carried out before and after exposure to FA. It is established that the dopant used for the synthesis of PEDOT does affect not only the distribution of the Pd nanoparticles on the polymer surface but also the stability of the composites upon electrochemical treatment in the presence of FA. It is found that PEDOT-PSS undergoes structural rearrangement, and significant loss of the Pd catalyst is observed. In comparison, PEDOT-SDS is more resistant to FA exposure since aggregated Pd nanoparticles are providing additional stability of the polymer structure.

Details

OriginalspracheEnglisch
Aufsatznummer137931
Seitenumfang8
FachzeitschriftElectrochimica acta
Jahrgang374.2021
Ausgabenummer1 April
Frühes Online-Datum10 Feb 2021
DOIs
StatusVeröffentlicht - 1 Apr 2021