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Platinum Terpyridine Metallopolymer Electrode as Cost-Effective Replacement for Bulk Platinum Catalysts in Oxygen Reduction Reaction and Hydrogen Evolution Reaction
journal contribution
posted on 2017-09-25, 00:00 authored by Sait Elmas, Wesley Beelders, Siobhan J. Bradley, Renee Kroon, Geoffry Laufersky, Mats Andersson, Thomas NannConducting
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.
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Cost-Effective Replacementnanoparticulate platinum group metalsPt metallopolymersHydrogen Evolution Reaction Conducting polymersfour-electron reductionRotating disk experimentsoxygen reduction reactionpendant terpyridine unitconductive backbonePGMhydrogen evolution reactionmetal-selective coordination unitsPlatinum Terpyridine Metallopolymer ElectrodeBulk Platinum CatalystsElectrocatalytic testselectropolymerisable monomerOxygen Reduction Reaction