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 Andersson, Thomas Nann

Research output: Contribution to journalArticlepeer-review

29 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 - 6 Nov 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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