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Efficient enzymatic CO2 reduction reaction on carbon nanotubes.


An original 1-acetato-4-(1-pyrenyl)-1,4,7-tria- zacyclononane (AcPyTACN) was synthesized for the immobilization of a His-tagged recombinant CODH from Rhodospirillum rubrum (RrCODH) 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 CO2 reduction and a high stability of more than 6 × 106 TON when integrated on a gas-diffusion bioelectrode.

A Pyrene-Triazacyclononane Anchor Affords High Operational Stability for CO2RR by a CNT-Supported Histidine-Tagged CODH. Umberto Contaldo,1 Mathieu Curtil,1 Julien Pérard,2 Christine Cavazza,2 and Alan Le Goff.1 Angew. Chem. Int. Ed. 2022, 61, e202117212.

Submitted on December 21, 2022

Updated on December 21, 2022