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 (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.
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