Advances in electro-microbial synergistic systems for value-added conversion of carbon dioxide Synthetic Biology Journal    DOI: 10.12211/2096-8280.2025-070

Fig. 7 Schematic of enhanced CO₂-to-CH₄ energy efficiency via redox-mediated cathode functionalization in MES^[80]

Extracts from the Article

近年来，天然类醌结构介体如蒽醌-2，6-二磺酸（AQDS）受到广泛关注［79］。Yang等人系统研究了NR和AQDS修饰阴极对甲烷生成的促进效果（图7）［80］。结果显示，CH₄生成速率在NR和AQDS改性阴极下分别提升5.8倍和3.5倍，库仑效率分别达到64.30% ± 4.83% 和 62.26% ± 2.87%，能量转化效率也较对照组显著提升。这些性能提升归因于NR/AQDS介体促进了胞外电子传递、降低了内部电阻、并富集了氢营养型产甲烷菌群。

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• Fig.1  Classifications of electrocatalytic-microbial in situ coupling systems
• Fig.2  Design of different electrode materials and schematic diagram of the MES systems
• Fig.3  Design of artificially regulated MES systems
• Fig. 4  MES for C₂₊ product synthesis
• Fig. 5  H₂-mediated enhancement strategies for MES-1
• Fig. 6  H₂-mediated enhancement strategies for MES-2
• Fig. 8  Construction of an artificial photosynthesis system by integrating a photoelectrochemical system with genetically engineered cells expressing rhodopsin and an outer-membrane conduit MtrCAB^[95]
• Fig. 9  Three integrated modes of electrocatalytic-microbial ex situ coupling systems for CO₂ conversion^[9]
• Fig. 10  An integrated electromicrobial process for converting CO₂ into higher alcohols^[90]
• Fig. 11  Schematic illustration of the integrated EMC2 system^[96]
• Fig. 12  Schematic of the continuous-flow biohybrid CO₂ electrolysis-fermentation system^[102]
• Fig. 13  Schematic illustration of the electromicrobial cascade system for artificial glucose synthesis^[103]
• Fig. 14  Schematic of the spatially separated electrochemical CO₂ reduction reaction (CO₂RR) and microbial fermentation process for efficient β-farnesene synthesis from CO₂^[98]
• Fig. 15  Schematic of the sequential CO₂ electrolysis and microbial fermentation system for artificial synthesis of PHB^[104]
• Fig. 16  Schematic illustration of L-tyrosine synthesis from CO₂ using a blended nexus molecular system based on an abiotic/biotic cascade catalysis^[105]
• Fig. 17  Schematic diagram of the carbon dioxide electrocatalytic platform and microbial conversion for long-chain compound synthesis. a) Schematic illustration of the integrated electrocatalytic/biocatalytic platform system for the synthesis of long-chain compounds from CO₂. b) Schematic depiction of the fabrication process of the MPN@deCOP@Ag-Cu₂O electrocatalytic platform. c) Construction of the ethanol utilization pathway^[106].
• Table 1  Representative work: in situ vs ex situ coupling
• Table 2  Comparative analysis of in situ and ex situ coupling systems