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Creating a Low‐Potential Redox Polymer for Efficient Electroenzymatic CO 2 Reduction
Author(s) -
Yuan Mengwei,
Sahin Selmihan,
Cai Rong,
Abdellaoui Sofiene,
Hickey David P.,
Minteer Shelley D.,
Milton Ross D.
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201803397
Subject(s) - formate , formate dehydrogenase , chemistry , redox , faraday efficiency , cobaltocene , inorganic chemistry , molybdenum , carbon dioxide , carbon fibers , combinatorial chemistry , photochemistry , electrode , organic chemistry , electrochemistry , materials science , catalysis , ferrocene , composite material , composite number
Increasing greenhouse gas emissions have resulted in greater motivation to find novel carbon dioxide (CO 2 ) reduction technologies, where the reduction of CO 2 to valuable chemical commodities is desirable. Molybdenum‐dependent formate dehydrogenase (Mo‐FDH) from Escherichia coli is a metalloenzyme that is able to interconvert formate and CO 2 . We describe a low‐potential redox polymer, synthesized by a facile method, that contains cobaltocene (grafted to poly(allylamine), Cc‐PAA) to simultaneously mediate electrons to Mo‐FDH and immobilize Mo‐FDH at the surface of a carbon electrode. The resulting bioelectrode reduces CO 2 to formate with a high Faradaic efficiency of 99±5 % at a mild applied potential of −0.66 V vs. SHE.