A Pyrene‐Triazacyclononane Anchor Affords High Operational Stability for CO<sub>2</sub>RR by a CNT‐Supported Histidine‐Tagged CODH
Umberto Contaldo, Mathieu Curtil, Julien Pérard, Christine Cavazza, Alan Le Goff
Abstract
Abstract An original 1‐acetato‐4‐(1‐pyrenyl)‐1,4,7‐triazacyclononane (AcPyTACN) was synthesized for the immobilization of a His‐tagged recombinant CODH from Rhodospirillum rubrum ( Rr CODH) on carbon‐nanotube electrodes. The strong binding of the enzyme at the Ni‐AcPyTACN complex affords a high current density of 4.9 mA cm −2 towards electroenzymatic CO 2 reduction and a high stability of more than 6×10 6 TON when integrated on a gas‐diffusion bioelectrode.
Topics & Concepts
ChemistryRhodospirillum rubrumPyreneCarbon nanotubeHistidineCarbon monoxide dehydrogenaseCombinatorial chemistryOrganic chemistryNanotechnologyMaterials scienceEnzymeCatalysisCarbon monoxideCO2 Reduction Techniques and CatalystsAdvanced battery technologies researchAdenosine and Purinergic Signaling