Reversible Electrochemical Trapping of Carbon Dioxide Using 4,4′-Bipyridine That Does Not Require Thermal Activation

Rajeev Ranjan, Jarred Olson, Poonam Singh, Edward D. Lorance, Daniel Buttry, Ian Gould

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

Sequestering carbon dioxide emissions by the trap and release of CO2 via thermally activated chemical reactions has proven problematic because of the energetic requirements of the release reactions. Here we demonstrate trap and release of carbon dioxide using electrochemical activation, where the reactions in both directions are exergonic and proceed rapidly with low activation barriers. One-electron reduction of 4,4′-bipyridine forms the radical anion, which undergoes rapid covalent bond formation with carbon dioxide to form an adduct. One-electron oxidation of this adduct releases the bipyridine and carbon dioxide. Reversible trap and release of carbon dioxide over multiple cycles is demonstrated in solution at room temperature, and without the requirement for thermal activation.

Original languageEnglish (US)
Pages (from-to)4943-4946
Number of pages4
JournalJournal of Physical Chemistry Letters
Volume6
Issue number24
DOIs
StatePublished - Nov 30 2015

Keywords

  • bipyridine
  • carbon dioxide
  • electrochemical trapping
  • sequestration

ASJC Scopus subject areas

  • Materials Science(all)

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