Platinum Terpyridine Metallopolymer Electrode as Cost-Effective Replacement for Bulk Platinum Catalysts in Oxygen Reduction Reaction and Hydrogen Evolution Reaction

Sait Elmas, Wesley Beelders, Siobhan Bradley, Renee Kroon, Geoffry Laufersky, Mats R. Andersson, Thomas Nann

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Conducting polymers consisting of metal-selective coordination units and a highly conductive backbone, so-called metallopolymers, are interesting materials exposing single atoms for photo/electrocatalysis and thus represent a potential low-cost alternative for bulk or nanoparticulate platinum group metals (PGMs). We synthesized and fully characterized an electropolymerisable monomer bearing a pendant terpyridine unit for the selective complexation of PGMs. Electrocatalytic tests of the resulting metallopolymer, poly-[(tThTerpy)PtCl]Cl, revealed activity both in the oxygen reduction reaction and hydrogen evolution reaction. Rotating disk experiments showed the direct four-electron reduction of molecular oxygen to water at low angular velocities of the rotating electrode. Furthermore, the fabrication of Pt metallopolymers proved to be simple, nonhazardous and versatile. This proof-of-concept opens up the possibility for developing future low-cost electro- and photocatalysts to replace current systems.

Original languageEnglish
Pages (from-to)10206-10214
Number of pages9
JournalACS Sustainable Chemistry & Engineering
Volume5
Issue number11
DOIs
Publication statusPublished - 2017
Externally publishedYes

Keywords

  • Oxygen reduction reaction
  • Hydrogen evolution reaction
  • Electrocatalyst
  • Conducting polymer
  • Terthiophene
  • Metal complex
  • Low metal loading
  • Fuel cells

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