Microbial electrosynthesis: carbonaceous electrode materials for CO<sub>2</sub> conversion

Chandran, Lekshmi Gopakumari Satheesh; Bazaka, Katia; Ramakrishna, Seeram; Kumaravel, Vignesh

doi:10.1039/d2mh01178f

Cited by 17 publications

(3 citation statements)

References 132 publications

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“…However, metal-based catalysts, particularly noble metals such as platinum, iridium, and palladium, suffer from significant drawbacks, including high cost, low selectivity, poor durability, susceptibility to gas poisoning, and negative environmental impact [25] . As a result, metal-free catalysts, such as carbon-based materials and conducting polymers, have emerged as promising alternatives to platinum catalysts, offering enhanced efficiency at a lower cost in many fields [26,27] . This section presents a comprehensive overview of metal-free catalysts in MES cathodes, specifically focusing on carbon-based materials and conductive polymers, which have been utilized as modifications to enhance cathode performance.…”

Section: Metal-free Materialsmentioning

confidence: 99%

Cathode materials in microbial electrosynthesis systems for carbon dioxide reduction: recent progress and perspectives

Hui,

Jiang,

Jiang

et al. 2023

Energy Mater

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Microbial electrosynthesis (MES) is an emerging technology that enables the synthesis of value-added chemicals from carbon dioxide (CO2) or inorganic carbon compounds by coupling renewable electricity to microbial metabolism. However, MES still faces challenges in achieving high production of value-added chemicals due to the limited extracellular electron transfer efficiency at the biotic-abiotic interfaces. To overcome this bottleneck, it is crucial to develop novel cathodes and modified materials. This review systematically summarizes recent advancements in cathode materials in the field of electrocatalyst-assisted and photocatalyst-assisted MES. The effects of various material types are further investigated by comparing metal-free and metal materials and photocatalyst materials of different semiconductor types. Additionally, the review introduces the maximum production rate of value-added chemicals and conversion efficiency achieved by these cathode materials while highlighting the advantages and disadvantages of different material types. To the best of our knowledge, in electrocatalyst-assisted systems, the maximum CH4 yield on graphene aerogel/polypyrrole cathode achieved 1,672 mmol m-2 d-1, and the maximum Faraday efficiency (FE) of CH4 reached up to 97.5% on graphite plate. Meanwhile, the maximum acetate yield achieved 1,330 g m-2 d-1 with CO2 conversion efficiency into acetate close to 100% on carbon nanotube cathodes. In photocatalyst-assisted systems, the maximum acetate yield could reach 0.51 g L-1 d-1 with the coulombic efficiency of 96% on the MnFe2O4/g-C3N4 photocathode. Finally, prospects for future development and practical applications of MES are discussed, offering theoretical guidance for the fabrication of cathode materials that can improve production efficiency and reduce energy input.

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Section: Metal-free Materialsmentioning

confidence: 99%

Cathode materials in microbial electrosynthesis systems for carbon dioxide reduction: recent progress and perspectives

Hui,

Jiang,

Jiang

et al. 2023

Energy Mater

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“…To metabolize CO 2 , bacteria in MES exchange electrons directly or indirectly using electron shuttle molecules [ 54 ]. To recycle anthropogenic CO 2 , electroactive microorganisms are employed in MES as a biocatalyst on suitable electrode materials [ 55 ].…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic Reactions for Converting CO2 to Value-Added Products: Recent Progress and Emerging Trends

Masoumi,

Tayebi,

Tayebi

et al. 2023

IJMS

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Carbon dioxide (CO2) emissions are an important environmental issue that causes greenhouse and climate change effects on the earth. Nowadays, CO2 has various conversion methods to be a potential carbon resource, such as photocatalytic, electrocatalytic, and photo-electrocatalytic. CO2 conversion into value-added products has many advantages, including facile control of the reaction rate by adjusting the applied voltage and minimal environmental pollution. The development of efficient electrocatalysts and improving their viability with appropriate reactor designs is essential for the commercialization of this environmentally friendly method. In addition, microbial electrosynthesis which utilizes an electroactive bio-film electrode as a catalyst can be considered as another option to reduce CO2. This review highlights the methods which can contribute to the increase in efficiency of carbon dioxide reduction (CO2R) processes through electrode structure with the introduction of various electrolytes such as ionic liquid, sulfate, and bicarbonate electrolytes, with the control of pH and with the control of the operating pressure and temperature of the electrolyzer. It also presents the research status, a fundamental understanding of carbon dioxide reduction reaction (CO2RR) mechanisms, the development of electrochemical CO2R technologies, and challenges and opportunities for future research.

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“…by driving artificial biosynthesis (e.g., artificial photosynthesis, artificial biocatalysis, etc. ), which provides a promising path for effective energy conversion and storage. − Artificial biosynthesis may occur at higher intrinsic efficiencies, which can accomplish carbon fixation in the form of biomass and liquid fuels by using sunlight, electricity, air, and water as the only starting materials. − To this end, although remarkable achievements have been made in CO 2 reduction, it is still usually limited by numerous bottlenecks of periodic solar energy or expensive outside electricity. Moreover, intermittent and unpredictable solar energy strongly depending on the weather, working conditions, and so on has limited practical applications to some degree and even cannot be utilized in extreme environments to achieve sustainable and clean CO 2 conversion. − Owing to the currently increasing human dependence on energy devices, the further development of new energy conversion and storage systems will be of great importance.…”

Section: Introductionmentioning

confidence: 99%

Self-Powered Biohybrid Systems Based on Organic Materials for Sustainable Biosynthesis

Chen,

Yu,

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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Sustainable energy conversion and effective biosynthesis for value-added chemicals have attracted considerable attention, but most biosynthesis systems cannot work independently without external power. In this work, a self-powered biohybrid system based on organic materials is designed and constructed successfully by integrating electroactive microorganisms with electrochemical devices. Among them, the hybrid living materials based on S. oneidensis/poly[3-(3′-N,N,N-triethylamino-1′-propyloxy)-4-methyl-2,5-thiophene chloride] (PMNT) biofilms for microbial fuel cells played a crucial role in electrocatalytic biocurrent generation by using biowaste as the only energy source. Without any external power supplies, the self-powered biohybrid systems could generate, convert, and store electrical energy for effective photosynthetic regulation and sustained chemical production. This work provides a new strategy to combine comprehensive renewable energy production with chemical manufacturing without an external power source in the future.

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Microbial electrosynthesis: carbonaceous electrode materials for CO₂ conversion

Abstract: Microbial electrosynthesis (MES) is a sustainable approach to addressing greenhouse gas (GHG) emissions by using anthropogenic carbon dioxide (CO2) as a building block to create clean fuels and highly valuable...

Cited by 17 publications

References 132 publications

Cathode materials in microbial electrosynthesis systems for carbon dioxide reduction: recent progress and perspectives

Cathode materials in microbial electrosynthesis systems for carbon dioxide reduction: recent progress and perspectives

Electrocatalytic Reactions for Converting CO2 to Value-Added Products: Recent Progress and Emerging Trends

Self-Powered Biohybrid Systems Based on Organic Materials for Sustainable Biosynthesis

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Microbial electrosynthesis: carbonaceous electrode materials for CO2 conversion

Abstract: Microbial electrosynthesis (MES) is a sustainable approach to addressing greenhouse gas (GHG) emissions by using anthropogenic carbon dioxide (CO2) as a building block to create clean fuels and highly valuable...

Cited by 17 publications

References 132 publications

Cathode materials in microbial electrosynthesis systems for carbon dioxide reduction: recent progress and perspectives

Cathode materials in microbial electrosynthesis systems for carbon dioxide reduction: recent progress and perspectives

Electrocatalytic Reactions for Converting CO2 to Value-Added Products: Recent Progress and Emerging Trends

Self-Powered Biohybrid Systems Based on Organic Materials for Sustainable Biosynthesis

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Product

Resources

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Microbial electrosynthesis: carbonaceous electrode materials for CO₂ conversion