Rapid selective electrocatalytic reduction of carbon dioxide to formate by an iridium pincer catalyst immobilized on carbon nanotube electrodes

Peng Kang; Sheng Zhang; Thomas J Meyer; Maurice Brookhart

doi:10.1002/anie.201310722

Rapid selective electrocatalytic reduction of carbon dioxide to formate by an iridium pincer catalyst immobilized on carbon nanotube electrodes

Angew Chem Int Ed Engl. 2014 Aug 11;53(33):8709-13. doi: 10.1002/anie.201310722. Epub 2014 Jun 4.

Authors

Peng Kang¹, Sheng Zhang, Thomas J Meyer, Maurice Brookhart

Affiliation

¹ Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599 (USA).

PMID: 24899071
DOI: 10.1002/anie.201310722

Abstract

An iridium pincer dihydride catalyst was immobilized on carbon nanotube-coated gas diffusion electrodes (GDEs) by using a non-covalent binding strategy. The as-prepared GDEs are efficient, selective, durable, gas permeable electrodes for electrocatalytic reduction of CO2 to formate. High turnover numbers (ca. 54,000) and turnover frequencies (ca. 15 s(-1)) were enabled by the novel electrode architecture in aqueous solutions saturated in CO2 with added HCO3(-).

Keywords: carbon dioxide; electrochemistry; formate; gas diffusion electrodes; iridium.