Water-soluble and air-stable [2Fe-2S]-metallopolymers: A new class of electrocatalysts for H2 production via water splitting

Richard S. Glass, Jeffrey Pyun, Dennis L. Lichtenberger, William P. Brezinski, Metin Karayilan, Kayla E. Clary, Nicholas G. Pavlopoulos, Dennis H. Evans

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

[2Fe–2S] organometallic complexes are effective electrocatalysts for the reduction of weak acids in acetonitrile to generate molecular hydrogen (H2) (hydrogen evolution reaction, HER). Incorporation of such a [2Fe–2S] catalytic site into metallopolymers has been achieved using atom transfer radical polymerization (ATRP). These well-defined polymers have been structurally characterized by SEC, 1H NMR and IR spectroscopy. These metallopolymers catalyze the electrochemical reduction of acetic acid in acetonitrile. In addition, [2Fe–2S] metallopolymers appended with amino groups were shown to be water-soluble and potent electrocatalysts for H2 production at pH 7. In addition to the exceptional activity of these [2Fe–2S] metallopolymers in water, these catalysts maintain catalytic activity in air unlike comparable molecular catalysts.

Original languageEnglish (US)
Pages (from-to)701-706
Number of pages6
JournalPhosphorus, Sulfur and Silicon and the Related Elements
Volume194
Issue number7
DOIs
StatePublished - Jul 3 2019

Keywords

  • Energy storage
  • [FeFe]-hydrogenase
  • hydrogen evolution reaction
  • metallopolymers

ASJC Scopus subject areas

  • Biochemistry
  • Organic Chemistry
  • Inorganic Chemistry

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