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

S. Elmas ; W. Beelders ; S. J. Bradley ; Renee Kroon (Institutionen för kemi och kemiteknik, Polymerteknologi) ; G. Laufersky ; Mats R. Andersson (Institutionen för kemi och kemiteknik, Polymerteknologi) ; T. Nann
ACS Sustainable Chemistry & Engineering (2168-0485). Vol. 5 (2017), 11, p. 10206-10214.
[Artikel, refereegranskad vetenskaplig]

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 nano particulate 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.

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

Denna post skapades 2017-11-28.
CPL Pubid: 253411


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Institutionen för kemi och kemiteknik, Polymerteknologi



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