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Liu Y, Webb S, Moreno-García P, Kulkarni A, Maroni P, Broekmann P, Milton RD. Facile Functionalization of Carbon Electrodes for Efficient Electroenzymatic Hydrogen Production. JACS AU 2023; 3:124-130. [PMID: 36711103 PMCID: PMC9875370 DOI: 10.1021/jacsau.2c00551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 12/02/2022] [Accepted: 12/22/2022] [Indexed: 06/18/2023]
Abstract
Enzymatic electrocatalysis holds promise for new biotechnological approaches to produce chemical commodities such as molecular hydrogen (H2). However, typical inhibitory limitations include low stability and/or low electrocatalytic currents (low product yields). Here we report a facile single-step electrode preparation procedure using indium-tin oxide nanoparticles on carbon electrodes. The subsequent immobilization of a model [FeFe]-hydrogenase from Clostridium pasteurianum ("CpI") on the functionalized carbon electrode permits comparatively large quantities of H2 to be produced in a stable manner. Specifically, we observe current densities of >8 mA/cm2 at -0.8 V vs the standard hydrogen electrode (SHE) by direct electron transfer (DET) from cyclic voltammetry, with an onset potential for H2 production close to its standard potential at pH 7 (approximately -0.4 V vs. SHE). Importantly, hydrogenase-modified electrodes show high stability retaining ∼92% of their electrocatalytic current after 120 h of continuous potentiostatic H2 production at -0.6 V vs. SHE; gas chromatography confirmed ∼100% Faradaic efficiency. As the bioelectrode preparation method balances simplicity, performance, and stability, it paves the way for DET on other electroenzymatic reactions as well as semiartificial photosynthesis.
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Affiliation(s)
- Yongpeng Liu
- Department
of Inorganic and Analytical Chemistry, University
of Geneva, Faculty of Sciences, Quai Ernest-Ansermet 30, Geneva 4 1211, Switzerland
| | - Sophie Webb
- Department
of Inorganic and Analytical Chemistry, University
of Geneva, Faculty of Sciences, Quai Ernest-Ansermet 30, Geneva 4 1211, Switzerland
- National
Centre of Competence in Research (NCCR) Catalysis, University of Geneva, Quai Ernest-Ansermet 30, Geneva 4 1211, Switzerland
| | - Pavel Moreno-García
- Department
of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, Bern 3012, Switzerland
- National
Centre of Competence in Research (NCCR) Catalysis, University of Bern, Freiestrasse 3, Bern 3012, Switzerland
| | - Amogh Kulkarni
- Department
of Inorganic and Analytical Chemistry, University
of Geneva, Faculty of Sciences, Quai Ernest-Ansermet 30, Geneva 4 1211, Switzerland
| | - Plinio Maroni
- Department
of Inorganic and Analytical Chemistry, University
of Geneva, Faculty of Sciences, Quai Ernest-Ansermet 30, Geneva 4 1211, Switzerland
| | - Peter Broekmann
- Department
of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, Bern 3012, Switzerland
- National
Centre of Competence in Research (NCCR) Catalysis, University of Bern, Freiestrasse 3, Bern 3012, Switzerland
| | - Ross D. Milton
- Department
of Inorganic and Analytical Chemistry, University
of Geneva, Faculty of Sciences, Quai Ernest-Ansermet 30, Geneva 4 1211, Switzerland
- National
Centre of Competence in Research (NCCR) Catalysis, University of Geneva, Quai Ernest-Ansermet 30, Geneva 4 1211, Switzerland
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MacArdle SG, Rees DC. Solvent Deuterium Isotope Effects of Substrate Reduction by Nitrogenase from Azotobacter vinelandii. J Am Chem Soc 2022; 144:21125-21135. [DOI: 10.1021/jacs.2c07574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Siobhán G. MacArdle
- Howard Hughes Medical Institute, Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California91125, United States
| | - Douglas C. Rees
- Howard Hughes Medical Institute, Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California91125, United States
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Lee HS, Lee SY, Yoo K, Kim HW, Lee E, Im NG. Biohydrogen production and purification: Focusing on bioelectrochemical systems. BIORESOURCE TECHNOLOGY 2022; 363:127956. [PMID: 36115508 DOI: 10.1016/j.biortech.2022.127956] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/06/2022] [Accepted: 09/08/2022] [Indexed: 06/15/2023]
Abstract
Innovative technologies on green hydrogen production become significant as the hydrogen economy has grown globally. Biohydrogen is one of green hydrogen production methods, and microbial electrochemical cells (MECs) can be key to biohydrogen provision. However, MECs are immature for biohydrogen technology due to several limitations including extracellular electron transfer (EET) engineering. Fundamental understanding of EET also needs more works to accelerate MEC commercialization. Interestingly, studies on biohydrogen gas purification are limited although biohydrogen gas mixture requires complex purification for use. To facilitate an MEC-based biohydrogen technology as the green hydrogen supply this review discussed EET kinetics, engineering of EET and direct interspecies electron transfer associated with hydrogen yield and the application of advanced molecular biology for improving EET kinetics. Finally, this article reviewed biohydrogen purification technologies to better understand purification and use appropriate for biohydrogen, focusing on membrane separation.
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Affiliation(s)
- Hyung-Sool Lee
- KENTECH Institute for Environmental and Climate Technology, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju-si, Jeollanam-do, South Korea.
| | - Soo Youn Lee
- Gwangju Clean Energy Research Center, Korea Institute of Energy Research, 61003 Gwangju, South Korea
| | - Keunje Yoo
- Department of Environmental Engineering, Korea Maritime and Ocean University, Busan 49112, South Korea
| | - Hyo Won Kim
- KENTECH Institute for Environmental and Climate Technology, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju-si, Jeollanam-do, South Korea
| | - Eunseok Lee
- KENTECH Institute for Environmental and Climate Technology, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju-si, Jeollanam-do, South Korea
| | - Nam Gyu Im
- KENTECH Institute for Environmental and Climate Technology, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju-si, Jeollanam-do, South Korea
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Ross Milton. Helv Chim Acta 2022. [DOI: 10.1002/hlca.202200098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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