Strategies for Bioelectrochemical CO<sub>2</sub> Reduction

Yuan, Mengwei; Kummer, Matthew J.

doi:10.1002/chem.201902880

Cited by 54 publications

(32 citation statements)

References 78 publications

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“…Possible applications range from implantable medical devices (insulin pump, neurological stimulator, artificial organs, etc. ), wearable sensors, and environmental diagnostic to energy converting devices or CO 2 capture [16,17,[296][297][298][299]. Many strategies are available to enhance enzyme stability in general.…”

Section: Discussionmentioning

confidence: 99%

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From Enzyme Stability to Enzymatic Bioelectrode Stabilization Processes

et al. 2021

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Bioelectrocatalysis using redox enzymes appears as a sustainable way for biosensing, electricity production, or biosynthesis of fine products. Despite advances in the knowledge of parameters that drive the efficiency of enzymatic electrocatalysis, the weak stability of bioelectrodes prevents large scale development of bioelectrocatalysis. In this review, starting from the understanding of the parameters that drive protein instability, we will discuss the main strategies available to improve all enzyme stability, including use of chemicals, protein engineering and immobilization. Considering in a second step the additional requirements for use of redox enzymes, we will evaluate how far these general strategies can be applied to bioelectrocatalysis.

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Section: Discussionmentioning

confidence: 99%

“…Some others are dependent on nicotinamide adenine dinucleotide phosphate (NADPH) to realize enzymatic transformations [11]. Such enzymes have been envisioned as biocatalysts in biosensors [12][13][14], biosynthesis reactors [15,16], or biofuel cells [17,18]. This domain is referred as Bioelectrochemistry.…”

Section: Introductionmentioning

confidence: 99%

From Enzyme Stability to Enzymatic Bioelectrode Stabilization Processes

et al. 2021

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“…Since the reduction of CO 2 emissions alone will probably not be sufficient, other methods such as the storage and recycling of CO 2 must also be increasingly addressed. Such concepts of CO 2 -recycling include thermochemical-, (bio)-electrochemical reduction or by plasma-driven catalytic reduction methods (Villano et al, 2010;Bajracharya et al, 2017;Yuan et al, 2019;Bogaerts and Centi, 2020;Liu et al, 2020) of carbon dioxide to fuels such as methane, methanol, and ethanol (Figure 2). If the electrical energy required for this conversion was solely generated from renewable sources, a completely sustainable and climate-friendly cycle would become possible (Figure 3).…”

Section: Electrocatalytic Reduction Of Comentioning

confidence: 99%

Recent Progress in (Photo-)-Electrochemical Conversion of CO2 With Metal Porphyrinoid-Systems

et al. 2021

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Since decades, the global community has been facing an environmental crisis, resulting in the need to switch from outdated to new, more efficient energy sources and a more effective way of tackling the rising carbon dioxide emissions. The activation of small molecules such as O2, H+, and CO2 in a cost—and energy-efficient way has become one of the key topics of catalysis research. The main issue concerning the activation of these molecules is the kinetic barrier that has to be overcome in order for the catalyzed reaction to take place. Nature has already provided many pathways in which small molecules are being activated and changed into compounds with higher energy levels. One of the most famous examples would be photosynthesis in which CO2 is transformed into glucose and O2 through sunlight, thus turning solar energy into chemical energy. For these transformations nature mostly uses enzymes that function as catalysts among which porphyrin and porphyrin-like structures can be found. Therefore, the research focus lies on the design of novel porphyrinoid systems (e.g. corroles, porphyrins and phthalocyanines) whose metal complexes can be used for the direct electrocatalytic reduction of CO2 to valuable chemicals like carbon monoxide, formate, methanol, ethanol, methane, ethylene, or acetate. For example the cobalt(III)triphenylphosphine corrole complex has been used as a catalyst for the electroreduction of CO2 to ethanol and methanol. The overall goal and emphasis of this research area is to develop a method for industrial use, raising the question of whether and how to incorporate the catalyst onto supportive materials. Graphene oxide, multi-walled carbon nanotubes, carbon black, and activated carbon, to name a few examples, have become researched options. These materials also have a beneficial effect on the catalysis through for instance preventing rival reactions such as the Hydrogen Evolution Reaction (HER) during CO2 reduction. It is very apparent that the topic of small molecule activation offers many solutions for our current energy as well as environmental crises and is becoming a thoroughly investigated research objective. This review article aims to give an overview over recently gained knowledge and should provide a glimpse into upcoming challenges relating to this subject matter.

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“…xCO 2 + yH 2 O / product + zO 2 , CO 2 recycling reaction (1) There are pathways in the traditional chemical industry, all thermally activated, that can be used for CO 2 hydrogenation using H 2 as the reductant. 142,143 CO 2 can be reduced to carbon monoxide (CO) by the reverse water gas shi reaction:…”

Section: Co 2 Reduction With H 2 Omentioning

confidence: 99%

“…It has been predicted that by 2050, the CO 2 concentration in the atmosphere will reach over 500 ppm, which is nearly double the concentration present prior to the industrial revolution. 1 CO 2 is reduced with H 2 O to form useful products such as carbon monoxide (CO), formate, methanol, ethanol, or hydrocarbons. These molecules are converted or used directly as sustainable alternatives to fossil fuels for energy storage.…”

Section: Introductionmentioning

confidence: 99%