Activating a Low Overpotential CO2 Reduction Mechanism by a Strategic Ligand Modification on a Ruthenium Polypyridyl Catalyst
2016 (English)In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 55, no 5Article in journal (Refereed) PublishedText
The introduction of a simple methyl substituent on the bipyridine ligand of [Ru(tBu(3)tpy)(bpy)(NCCH3)](2+) (tBu(3)tpy = 4,4',4''-tri-tert-butyl-2,2':6',2''-terpyridine; bpy = 2,2'-bipyridine) gives rise to a highly active electrocatalyst for the reduction of CO2 to CO. The methyl group enables CO2 binding already at the one-electron reduced state of the complex to enter a previously not accessible catalytic cycle that operates at the potential of the first reduction. The complex turns over with a Faradaic efficiency close to unity and at an overpotential that is amongst the lowest ever reported for homogenous CO2 reduction catalysts.
Place, publisher, year, edition, pages
2016. Vol. 55, no 5
carbon dioxide reduction, electrocatalysis, overpotential, reaction mechanisms, ruthenium
IdentifiersURN: urn:nbn:se:uu:diva-280898DOI: 10.1002/anie.201508490ISI: 000369854000042PubMedID: 26671836OAI: oai:DiVA.org:uu-280898DiVA: diva2:912333
FunderSwedish Research CouncilSwedish Energy AgencyKnut and Alice Wallenberg FoundationWenner-Gren Foundations