A review on the design and performance of enzyme-aided catalysis of carbon dioxide in membrane, electrochemical cell and photocatalytic reactors

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Abstract

Multi-enzyme cascade catalysis involved three types of dehydrogenase enzymes, namely, formate dehydrogenase (FDH), formaldehyde dehydrogenase (FaldDH), alcohol dehydrogenase (ADH), and an equimolar electron donor, nicotinamide adenine dinucleotide (NADH), assisting the reaction is an interesting pathway to reduce thermodynamically stable molecules of CO2 from the atmosphere. The biocatalytic sequence is interesting because it operates under mild reaction conditions (low temperature and pressure) and all the enzymes are highly selective, which allows the reaction to produce three basic chemicals (formic acid, formaldehyde, and methanol) in just one pot. There are various challenges, however, in applying the enzymatic conversion of CO2, namely, to obtain high productivity, increase reusability of the enzymes and cofactors, and to design a simple, facile, and efficient reactor setup that will sustain the multi-enzymatic cascade catalysis. This review reports on enzyme-aided reactor systems that support the reduction of CO2 to methanol. Such systems include enzyme membrane reactors, electrochemical cells, and photocatalytic reactor systems. Existing reactor setups are described, product yields and biocatalytic productivities are evaluated, and effective enzyme immobilization methods are discussed.

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Lim, F. N. A. R., Marpani, F., Dilol, V. E. A., Pauzi, S. M., Othman, N. H., Alias, N. H., … Rahman, N. A. (2022, January 1). A review on the design and performance of enzyme-aided catalysis of carbon dioxide in membrane, electrochemical cell and photocatalytic reactors. Membranes. MDPI. https://doi.org/10.3390/membranes12010028

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