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Chen JJ. Interfacial Electron Transfer in Chemical and Biological Transformation of Pollutants in Environmental Catalysis. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:21540-21549. [PMID: 38086095 DOI: 10.1021/acs.est.3c05608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
Interfacial electron transfer (IET) is essential for chemical and biological transformation of pollutants, operative across diverse lengths and time scales. This Perspective presents an array of multiscale molecular simulation methodologies, supplemented by in situ monitoring and imaging techniques, serving as robust tools to decode IET enhancement mechanisms such as interface molecular modification, catalyst coordination mode, and atomic composition regulation. In addition, three IET-based pollutant transformation systems, an electrocatalytic oxidation system, a bioelectrochemical spatial coupling system, and an enzyme-inspired electrocatalytic system, were developed, demonstrating a high effect in transforming and degrading pollutants. To improve the effectiveness and scalability of IET-based strategies, the refinement of these systems is necessitated through rigorous research and theoretical exploration, particularly in the context of practical wastewater treatment scenarios. Future endeavors aim to elucidate the synergy between biological and chemical modules, edit the environmental functional microorganisms, and harness machine learning for designing advanced environmental catalysts to boost efficiency. This Perspective highlights the powerful potential of IET-focused environmental remediation strategies, emphasizing the critical role of interdisciplinary research in addressing the urgent global challenge of water pollution.
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Affiliation(s)
- Jie-Jie Chen
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
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Wang G, Chen L, Xing Y, Sun C, Fu P, Li Q, Chen R. Biochar establishing syntrophic partnership between exoelectrogens to facilitate extracellular electron transfer. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 904:166549. [PMID: 37633395 DOI: 10.1016/j.scitotenv.2023.166549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/31/2023] [Accepted: 08/23/2023] [Indexed: 08/28/2023]
Abstract
Biochar was regarded as a promising accelerator for extracellular electron transfer (EET), while the mechanism of biochar facilitating electricity harvest in bioelectrochemical system (BES) was in debates. In this study, sawdust-based biochar with low conductivity but strong redox-based electron exchange capacity was added into BES with two forms, including a suspended form (S-BC) added in anode chamber and a fixed form closely wrapping up the anode (F-BC). Compared with the control group, S-BC and F-BC addition dramatically increased accumulated electricity output by 2.0 and 5.1 times. However, electrochemical analysis characterized the lowest electrochemical property on anode surface in F-BC modified group. A 2nd period conducted by separating F-BC modified group with "aged F-BC + new anode" group and "single aged anode" group demonstrated that F-BC contributed >95 % to the current generation of F-BC modified group, while the anode almost acted as a conductor to transfer the generated electrons to cathode. Microbial community analysis revealed that both heterotrophic and autotrophic exoelectrogens contributed to current generation. The presence of biochar upregulated functional genes encoding cytochrome-c and type IV pilus, thereby boosting electricity harvest efficiency. Interestingly, the heterotrophic exoelectrogens of Geobacter/Desulfovibrio tended to attach on fixed surfaces of both biochar and anode, and the autotrophic exelectrogen of Hydrogenophaga was selectively enriched on biochar surfaces whatever fixed or suspended form. Consequently, a syntrophic partnership between Geobacter/Desulfovibrio and Hydrogenophaga was potentially establishment on F-BC surface for highly-efficient electricity harvest. In this syntrophic EET model, biochar potentially acted as the redox-active mediator, which temporarily accepted electron released by Geobacter/Desulfovibrio via acetate oxidation, and then donated them to Hydrogenophaga attached on biochar surfaces for autotrophic EET. This was distinct from a regular EET conducted by heterotrophic exoelectrogens. These findings provided new insights to understand the mechanisms of biochar facilitating EET by syntrophic metabolism pathway.
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Affiliation(s)
- Gaojun Wang
- Key Laboratory of Northwest Water Resource, Environment and Ecology (Ministry of Education), Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China; International S&T Cooperation Center for Urban Alternative Water Resources Development, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China
| | - Lu Chen
- Key Laboratory of Northwest Water Resource, Environment and Ecology (Ministry of Education), Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China
| | - Yao Xing
- Key Laboratory of Northwest Water Resource, Environment and Ecology (Ministry of Education), Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China; Xingrong (Xi'an) Environmental Development Co., No. 3160, Dazhai Road, Xi'an 710055, PR China
| | - Changxi Sun
- Key Laboratory of Northwest Water Resource, Environment and Ecology (Ministry of Education), Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China
| | - Peng Fu
- Key Laboratory of Northwest Water Resource, Environment and Ecology (Ministry of Education), Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China
| | - Qian Li
- Key Laboratory of Northwest Water Resource, Environment and Ecology (Ministry of Education), Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China; International S&T Cooperation Center for Urban Alternative Water Resources Development, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Rong Chen
- Key Laboratory of Northwest Water Resource, Environment and Ecology (Ministry of Education), Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China; International S&T Cooperation Center for Urban Alternative Water Resources Development, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China.
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Rhodes Z, Simoska O, Dantanarayana A, Stevenson KJ, Minteer SD. Using structure-function relationships to understand the mechanism of phenazine-mediated extracellular electron transfer in Escherichia coli. iScience 2021; 24:103033. [PMID: 34522869 PMCID: PMC8426270 DOI: 10.1016/j.isci.2021.103033] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/19/2021] [Accepted: 08/20/2021] [Indexed: 10/26/2022] Open
Abstract
Phenazines are redox-active nitrogen-containing heterocyclic compounds that can be produced by either bacteria or synthetic approaches. As an electron shuttles (mediators), phenazines are involved in several biological processes facilitating extracellular electron transfer (EET). Therefore, it is of great importance to understand the structural and electronic properties of phenazines that promote EET in microbial electrochemical systems. Our previous study experimentally investigated a phenazine-based library as an exogenous mediator system to facilitate EET in Escherichia coli. Herein, we combine our experimental data with density functional theory (DFT) calculations and multivariate linear regression modeling to understand the structure-function relationships in phenazine-based mediated EET. These calculations demonstrate that the computed redox properties of phenazines in lipophilic environments (e.g., cell membrane) correlate to experimental mediated current densities. Additional DFT-derived molecular properties were considered to develop a predictive model, which could be used in metabolic engineering approaches to introduce phenazines as endogenous mediators into bacteria.
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Affiliation(s)
- Zayn Rhodes
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA
| | - Olja Simoska
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA
| | | | - Keith J Stevenson
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, Bolshoi Boulevard 30 Bld. 1, Moscow 121205, Russia
| | - Shelley D Minteer
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA
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Xu N, Wang TL, Li WJ, Wang Y, Chen JJ, Liu J. Tuning Redox Potential of Anthraquinone-2-Sulfonate (AQS) by Chemical Modification to Facilitate Electron Transfer From Electrodes in Shewanella oneidensis. Front Bioeng Biotechnol 2021; 9:705414. [PMID: 34447742 PMCID: PMC8383453 DOI: 10.3389/fbioe.2021.705414] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 07/23/2021] [Indexed: 01/17/2023] Open
Abstract
Bioelectrochemical systems (BESs) are emerging as attractive routes for sustainable energy generation, environmental remediation, bio-based chemical production and beyond. Electron shuttles (ESs) can be reversibly oxidized and reduced among multiple redox reactions, thereby assisting extracellular electron transfer (EET) process in BESs. Here, we explored the effects of 14 ESs on EET in Shewanella oneidensis MR-1, and found that anthraquinone-2-sulfonate (AQS) led to the highest cathodic current density, total charge production and reduction product formation. Subsequently, we showed that the introduction of -OH or -NH2 group into AQS at position one obviously affected redox potentials. The AQS-1-NH2 exhibited a lower redox potential and a higher Coulombic efficiency compared to AQS, revealing that the ESs with a more negative potential are conducive to minimize energy losses and improve the reduction of electron acceptor. Additionally, the cytochromes MtrA and MtrB were required for optimal AQS-mediated EET of S. oneidensis MR-1. This study will provide new clues for rational design of efficient ESs in microbial electrosynthesis.
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Affiliation(s)
- Ning Xu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China.,Key Laboratory of Systems Microbial Biotechnology, Chinese Academy of Sciences, Tianjin, China
| | - Tai-Lin Wang
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China.,College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Wen-Jie Li
- Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Yan Wang
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China.,College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Jie-Jie Chen
- Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Jun Liu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China.,Key Laboratory of Systems Microbial Biotechnology, Chinese Academy of Sciences, Tianjin, China.,College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
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Xu B, Li Z, Jiang Y, Chen M, Chen B, Xin F, Dong W, Jiang M. Recent advances in the improvement of bi-directional electron transfer between abiotic/biotic interfaces in electron-assisted biosynthesis system. Biotechnol Adv 2021; 54:107810. [PMID: 34333092 DOI: 10.1016/j.biotechadv.2021.107810] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 07/06/2021] [Accepted: 07/26/2021] [Indexed: 12/18/2022]
Abstract
As an important biosynthesis technology, electron-assisted biosynthesis (EABS) system can utilize exogenous electrons to regulate the metabolic network of microorganisms, realizing the biosynthesis of high value-added chemicals and CO2 fixation. Electrons play crucial roles as the energy carriers in the EABS process. In fact, efficient interfacial electron transfer (ET) is the decisive factor to realize the rapid energy exchange, thus stimulating the biosynthesis of target metabolic products. However, due to the interfacial resistance of ET between the abiotic solid electrode and biotic microbial cells, the low efficiency of interfacial ET has become a major bottleneck, further limiting the practical application of EABS system. As the cell membrane is insulated, even the cell membrane embedded electron conduit (no matter cytochromes or channel protein for shuttle transferring) to increase the cell membrane conductivity, the ET between membrane electron conduit and electrode surface is kinetically restricted. In this review, the pathway of bi-directional interfacial ET in EABS system was summarized. Furthermore, we reviewed representative milestones and advances in both the anode outward interfacial ET (from organism to electrode) and cathode inward interfacial ET (from electrode to organism). Here, new insights from the perspectives of material science and synthetic biology were also proposed, which were expected to provide some innovative opinions and ideas for the following in-depth studies.
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Affiliation(s)
- Bin Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, PR China
| | - Zhe Li
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211800, PR China
| | - Yujia Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, PR China
| | - Minjiao Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, PR China
| | - Boryann Chen
- Department of Chemical and Materials Engineering, National I-Lan University, I-Lan 26047, Taiwan
| | - Fengxue Xin
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, PR China; Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211800, PR China
| | - Weiliang Dong
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, PR China; Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211800, PR China.
| | - Min Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, PR China; Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211800, PR China.
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Nanjani S, Paul D, Keharia H. Genome analysis to decipher syntrophy in the bacterial consortium 'SCP' for azo dye degradation. BMC Microbiol 2021; 21:177. [PMID: 34116639 PMCID: PMC8194134 DOI: 10.1186/s12866-021-02236-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 05/20/2021] [Indexed: 11/16/2022] Open
Abstract
Background A bacterial consortium SCP comprising three bacterial members, viz. Stenotrophomonas acidaminiphila APG1, Pseudomonas stutzeri APG2 and Cellulomonas sp. APG4 was developed for degradation of the mono-azo dye, Reactive Blue 28. The genomic analysis of each member of the SCP consortium was done to elucidate the catabolic potential and role of the individual organism in dye degradation. Results The genes for glycerol utilization were detected in the genomes of APG2 and APG4, which corroborated with their ability to grow on a minimal medium containing glycerol as the sole co-substrate. The genes for azoreductase were identified in the genomes of APG2 and APG4, while no such trait could be determined in APG1. In addition to co-substrate oxidation and dye reduction, several other cellular functions like chemotaxis, signal transduction, stress-tolerance, repair mechanisms, aromatic degradation, and copper tolerance associated with dye degradation were also annotated. A model for azo dye degradation is postulated, representing the predominant role of APG4 and APG2 in dye metabolism while suggesting an accessory role of APG1. Conclusions This exploratory study is the first-ever attempt to divulge the genetic basis of azo-dye co-metabolism by cross-genome comparisons and can be harnessed as an example for demonstrating microbial syntrophy. Supplementary Information The online version contains supplementary material available at 10.1186/s12866-021-02236-9.
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Affiliation(s)
- Sandhya Nanjani
- Post Graduate Department of Biosciences, UGC Centre of Advanced Study, Sardar Patel University, Satellite Campus, Vadtal Road, Bakrol, Anand, Gujarat, 388 315, India
| | - Dhiraj Paul
- Microbial Culture Collection, National Centre for Microbial Resource, National Centre for Cell Science, Savitribai Phule University of Pune Campus, Pune, India
| | - Hareshkumar Keharia
- Post Graduate Department of Biosciences, UGC Centre of Advanced Study, Sardar Patel University, Satellite Campus, Vadtal Road, Bakrol, Anand, Gujarat, 388 315, India.
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Mi Z, Zhou T, Weng W, Unruangsri J, Hu K, Yang W, Wang C, Zhang KAI, Guo J. Covalent Organic Frameworks Enabling Site Isolation of Viologen‐Derived Electron‐Transfer Mediators for Stable Photocatalytic Hydrogen Evolution. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016618] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Zhen Mi
- State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Ting Zhou
- State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Weijun Weng
- State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Junjuda Unruangsri
- Department of Chemistry Chulalongkorn University Phayathai Road Bangkok 10330 Thailand
| | - Ke Hu
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Wuli Yang
- State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Changchun Wang
- State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Kai A. I. Zhang
- Department of Materials Science Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Jia Guo
- State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University 2005 Songhu Road Shanghai 200438 China
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Mi Z, Zhou T, Weng W, Unruangsri J, Hu K, Yang W, Wang C, Zhang KAI, Guo J. Covalent Organic Frameworks Enabling Site Isolation of Viologen-Derived Electron-Transfer Mediators for Stable Photocatalytic Hydrogen Evolution. Angew Chem Int Ed Engl 2021; 60:9642-9649. [PMID: 33484039 DOI: 10.1002/anie.202016618] [Citation(s) in RCA: 83] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Indexed: 01/04/2023]
Abstract
Electron transfer is the rate-limiting step in photocatalytic water splitting. Viologen and its derivatives are able to act as electron-transfer mediators (ETMs) to facilitate the rapid electron transfer from photosensitizers to active sites. Nevertheless, the electron-transfer ability often suffers from the formation of a stable dipole structure through the coupling between cationic-radical-containing viologen-derived ETMs, by which the electron-transfer process becomes restricted. Herein, cyclic diquats, a kind of viologen-derived ETM, are integrated into a 2,2'-bipyridine-based covalent organic framework (COF) through a post-quaternization reaction. The content and distribution of embedded diquat-ETMs are elaborately controlled, leading to the favorable site-isolated arrangement. The resulting materials integrate the photosensitizing units and ETMs into one system, exhibiting the enhanced hydrogen evolution rate (34600 μmol h-1 g-1 ) and sustained performances when compared to a single-module COF and a COF/ETM mixture. The integration strategy applied in a 2D COF platform promotes the consecutive electron transfer in photochemical processes through the multi-component cooperation.
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Affiliation(s)
- Zhen Mi
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Ting Zhou
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Weijun Weng
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Junjuda Unruangsri
- Department of Chemistry, Chulalongkorn University, Phayathai Road, Bangkok, 10330, Thailand
| | - Ke Hu
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Wuli Yang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Changchun Wang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Kai A I Zhang
- Department of Materials Science, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Jia Guo
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
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Yu SS, Cheng L, Chen JJ, Li WW, Zhao F, Wang WL, Li DB, Zhang F, Yu HQ. Framework of Cytochrome/Vitamin B 2 Linker/Graphene for Robust Microbial Electricity Generation. ACS APPLIED MATERIALS & INTERFACES 2018; 10:35090-35098. [PMID: 30247017 DOI: 10.1021/acsami.8b10877] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A bioelectrochemical system (BES) allows direct electricity production from wastes, but its low-power density, which is mainly associated with its poor anodic performance, limits its practical applications. Here, the anodic performance of a BES can be significantly improved by electrodepositing vitamin B2 (VB2) onto a graphene [reduced graphene oxide (rGO)]-modified glassy carbon electrode (VB2/rGO/GC) with Geobacter sulfurreducens as the model microorganisms. The VB2/rGO/GC electrode results in 200% higher electrochemical activity than a bare GC anode. Additionally, in microbial electrolysis cells, the current density of this composite electrode peaks at ∼210 μA cm-2 after 118 h and is maintained for 113 h. An electrochemical analysis coupled with molecular simulations reveals that using VB2 as a linker between the electrochemically active protein of this model strain and the rGO surface accelerates the electron transfer, which further improves the bioelectricity generation and favors the long-term stability of the BES. The VB2 bound with a flexible ribityl group as the organic molecular bridge efficiently mediates energy conversion in microbial metabolism and artificial electronics. This work provides a straightforward and effective route to significantly enhance the bioenergy generation in a BES.
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Affiliation(s)
- Sheng-Song Yu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Lei Cheng
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Jie-Jie Chen
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Wen-Wei Li
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Feng Zhao
- Institute of Urban Environment , Chinese Academy of Sciences , Xiamen 361021 , China
| | - Wen-Lan Wang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Dao-Bo Li
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Feng Zhang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Han-Qing Yu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Applied Chemistry , University of Science and Technology of China , Hefei 230026 , China
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Xie Z, Guo J, Lu C, Song Y, Xing Y, Yang Q, Han Y, Li H. Biocatalysis mechanisms and characterization of a novel denitrification process with porphyrin compounds based on the electron transfer chain. BIORESOURCE TECHNOLOGY 2018; 265:548-553. [PMID: 29803617 DOI: 10.1016/j.biortech.2018.05.069] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 05/16/2018] [Accepted: 05/17/2018] [Indexed: 06/08/2023]
Abstract
In this research, the nitrate reduction rate increased 2-3 fold in the presence of five different porphyrin compounds (0.25 mM), among which hemin expressed the best accelerating effectiveness. Therefore, hemin was used to explore the catalytic characteristics and mechanisms during denitrification. The relationship between hemin concentrations (Chemin) and nitrate reduction rates (k) could be best described by the equation k = 8.7463 + 0.44528ln (Chemin-0.00993) (R2 = 0.9908). Furthermore, the activation energy decreased 87% compared to the hemin-free system. Two active centers of hemin, the Fe3+ atom and the porphyrin ligand, might be involved in catalyzing the denitrification process. Additionally, the accelerating site of hemin in the denitrification electron transfer chain was elucidated by different metabolic inhibitors. This study provides a better understanding of porphyrin compounds in bio-multistage redox reactions and is a promising strategy for its practice application.
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Affiliation(s)
- Zhen Xie
- School of Environmental and Municipal Engineering, Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Jinjing Road 26, Tianjin 300384, China
| | - Jianbo Guo
- School of Environmental and Municipal Engineering, Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Jinjing Road 26, Tianjin 300384, China.
| | - Caicai Lu
- School of Environmental and Municipal Engineering, Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Jinjing Road 26, Tianjin 300384, China.
| | - Yuanyuan Song
- School of Environmental and Municipal Engineering, Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Jinjing Road 26, Tianjin 300384, China
| | - Yajuan Xing
- Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Qingxiong Yang
- School of Karst Science, Guizhou Normal University, State Engineering Technology Institute for Karst Desertification Control, Guiyang 550001, China
| | - Yi Han
- School of Environmental and Municipal Engineering, Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Jinjing Road 26, Tianjin 300384, China
| | - Haibo Li
- School of Environmental and Municipal Engineering, Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Jinjing Road 26, Tianjin 300384, China
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11
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Feng J, Qian Y, Wang Z, Wang X, Xu S, Chen K, Ouyang P. Enhancing the performance of Escherichia coli-inoculated microbial fuel cells by introduction of the phenazine-1-carboxylic acid pathway. J Biotechnol 2018; 275:1-6. [DOI: 10.1016/j.jbiotec.2018.03.017] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 03/20/2018] [Accepted: 03/23/2018] [Indexed: 11/30/2022]
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12
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Huang B, Gao S, Xu Z, He H, Pan X. The Functional Mechanisms and Application of Electron Shuttles in Extracellular Electron Transfer. Curr Microbiol 2017; 75:99-106. [PMID: 29127455 DOI: 10.1007/s00284-017-1386-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Accepted: 10/30/2017] [Indexed: 12/01/2022]
Abstract
Electron shuttles extensively exist in various environments. Some kinds of organic substances can be applied by microorganisms to produce electrons, and then the electrons can be transferred to other substances or microorganisms through electron shuttles, resulting in coexistence and interaction of diverse species of microbes. In this review, the functional mechanisms of extracellular electron transfer mediated by different electron shuttles are described. And different subtypes as well as the application of electron shuttles in microbial degradation of pollutants, microbial electricity, and the promotion of energy generation are also discussed. Summary results show that extracellular electron transfer is based on the electrogenesis microorganism with the structure of cytochromes or pili. Materials were usually used in long-distance electron transfer because of their widespread presence and abundance. Therefore, the review is beneficial to perceive the pathways of extracellular electron transfer mediated by electron shuttles and explore the contribution of different electron shuttles in extracellular electron transfer.
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Affiliation(s)
- Bin Huang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, People's Republic of China
| | - Shumei Gao
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, People's Republic of China
| | - Zhixiang Xu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, People's Republic of China
| | - Huan He
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, People's Republic of China
| | - Xuejun Pan
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, People's Republic of China.
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Enhanced photocurrent production by the synergy of hematite nanowire-arrayed photoanode and bioengineered Shewanella oneidensis MR-1. Biosens Bioelectron 2017; 94:227-234. [DOI: 10.1016/j.bios.2017.03.006] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 03/03/2017] [Accepted: 03/05/2017] [Indexed: 12/30/2022]
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14
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Chen W, Liu XY, Qian C, Song XN, Li WW, Yu HQ. An UV–vis spectroelectrochemical approach for rapid detection of phenazines and exploration of their redox characteristics. Biosens Bioelectron 2015; 64:25-9. [DOI: 10.1016/j.bios.2014.08.032] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Revised: 08/14/2014] [Accepted: 08/18/2014] [Indexed: 11/15/2022]
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15
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Wang YP, Yu SS, Zhang HL, Li WW, Cheng YY, Yu HQ. Roles of 3,3',4',5-tetrachlorosalicylanilide in regulating extracellular electron transfer of Shewanella oneidensis MR-1. Sci Rep 2015; 5:7991. [PMID: 25612888 PMCID: PMC4303895 DOI: 10.1038/srep07991] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 12/29/2014] [Indexed: 12/12/2022] Open
Abstract
Microbial extracellular electron transfer (EET) is critically involved in many pollutant conversion processes in both natural environment and engineered bioelectrochemical systems (BES), but typically with limited efficiency and poor controllability. In this study, we discover an important role of uncouplers in affecting the microbial energy metabolism and EET. Dose of lower-concentration 3,3',4',5-tetrachlorosalicylanilide (TCS) in the anolyte promoted the current generation and substrate degradation of an MFC inoculated with Shewanella oneidensis MR-1. However, higher TCS dosage caused obvious microbial inhibition. Our results suggest a previously unknown role of uncouplers in regulating the microbial EET. In addition, the underlying mechanisms of such processes are investigated. This work broadens our view about the EET behaviors of microorganisms in real water environment where uncouplers are usually present, and suggests a possible new approach to regulate microbial EET in BES.
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Affiliation(s)
- Yong-Peng Wang
- 1] Department of Chemistry, University of Science &Technology of China, Hefei, 230026, China [2] China Academy of Engineering Physics, P. O. Box 919, Mianyang 621900, China
| | - Sheng-Song Yu
- Department of Chemistry, University of Science &Technology of China, Hefei, 230026, China
| | - Hai-Ling Zhang
- 1] Department of Chemistry, University of Science &Technology of China, Hefei, 230026, China [2] China Academy of Engineering Physics, P. O. Box 919, Mianyang 621900, China
| | - Wen-Wei Li
- 1] Department of Chemistry, University of Science &Technology of China, Hefei, 230026, China [2] Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science &Technology of China, Hefei, 230026, China
| | - Yuan-Yuan Cheng
- Department of Chemistry, University of Science &Technology of China, Hefei, 230026, China
| | - Han-Qing Yu
- Department of Chemistry, University of Science &Technology of China, Hefei, 230026, China
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16
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Membrane permeabilization underlies the enhancement of extracellular bioactivity in Shewanella oneidensis by a membrane-spanning conjugated oligoelectrolyte. Appl Microbiol Biotechnol 2014; 98:9021-31. [DOI: 10.1007/s00253-014-5973-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 07/01/2014] [Accepted: 07/19/2014] [Indexed: 01/29/2023]
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17
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Zhang P, Xu D, Li Y, Yang K, Gu T. Electron mediators accelerate the microbiologically influenced corrosion of 304 stainless steel by the Desulfovibrio vulgaris biofilm. Bioelectrochemistry 2014; 101:14-21. [PMID: 25023048 DOI: 10.1016/j.bioelechem.2014.06.010] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 05/16/2014] [Accepted: 06/20/2014] [Indexed: 01/24/2023]
Abstract
In the microbiologically influenced corrosion (MIC) caused by sulfate reducing bacteria (SRB), iron oxidation happens outside sessile cells while the utilization of the electrons released by the oxidation process for sulfate reduction occurs in the SRB cytoplasm. Thus, cross-cell wall electron transfer is needed. It can only be achieved by electrogenic biofilms. This work hypothesized that the electron transfer is a bottleneck in MIC by SRB. To prove this, MIC tests were carried out using 304 stainless steel coupons covered with the Desulfovibrio vulgaris (ATCC 7757) biofilm in the ATCC 1249 medium. It was found that both riboflavin and flavin adenine dinucleotide (FAD), two common electron mediators that enhance electron transfer, accelerated pitting corrosion and weight loss on the coupons when 10ppm (w/w) of either of them was added to the culture medium in 7-day anaerobic lab tests. This finding has important implications in MIC forensics and biofilm synergy in MIC that causes billions of dollars of damages to the US industry each year.
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Affiliation(s)
- Peiyu Zhang
- Department of Chemical and Biomolecular Engineering, Institute for Corrosion and Multiphase Technology, Ohio University, Athens, OH 45701, United States
| | - Dake Xu
- Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China.
| | - Yingchao Li
- Department of Chemical and Biomolecular Engineering, Institute for Corrosion and Multiphase Technology, Ohio University, Athens, OH 45701, United States
| | - Ke Yang
- Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Tingyue Gu
- Department of Chemical and Biomolecular Engineering, Institute for Corrosion and Multiphase Technology, Ohio University, Athens, OH 45701, United States.
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18
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Marenich AV, Ho J, Coote ML, Cramer CJ, Truhlar DG. Computational electrochemistry: prediction of liquid-phase reduction potentials. Phys Chem Chem Phys 2014; 16:15068-106. [PMID: 24958074 DOI: 10.1039/c4cp01572j] [Citation(s) in RCA: 314] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This article reviews recent developments and applications in the area of computational electrochemistry. Our focus is on predicting the reduction potentials of electron transfer and other electrochemical reactions and half-reactions in both aqueous and nonaqueous solutions. Topics covered include various computational protocols that combine quantum mechanical electronic structure methods (such as density functional theory) with implicit-solvent models, explicit-solvent protocols that employ Monte Carlo or molecular dynamics simulations (for example, Car-Parrinello molecular dynamics using the grand canonical ensemble formalism), and the Marcus theory of electronic charge transfer. We also review computational approaches based on empirical relationships between molecular and electronic structure and electron transfer reactivity. The scope of the implicit-solvent protocols is emphasized, and the present status of the theory and future directions are outlined.
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Affiliation(s)
- Aleksandr V Marenich
- Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota, 207 Pleasant Street S.E., Minneapolis, MN 55455-0431, USA.
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Anaerobic/aerobic conditions and biostimulation for enhanced chlorophenols degradation in biocathode microbial fuel cells. Biodegradation 2014; 25:615-32. [DOI: 10.1007/s10532-014-9686-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Accepted: 02/10/2014] [Indexed: 10/25/2022]
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20
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Kim E, Leverage WT, Liu Y, White IM, Bentley WE, Payne GF. Redox-capacitor to connect electrochemistry to redox-biology. Analyst 2014; 139:32-43. [DOI: 10.1039/c3an01632c] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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