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Zamader A, Reuillard B, Pécaut J, Billon L, Bousquet A, Berggren G, Artero V. Non-Covalent Integration of a [FeFe]-Hydrogenase Mimic to Multiwalled Carbon Nanotubes for Electrocatalytic Hydrogen Evolution. Chemistry 2022; 28:e202202260. [PMID: 36069308 PMCID: PMC10092503 DOI: 10.1002/chem.202202260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Indexed: 12/14/2022]
Abstract
Surface integration of molecular catalysts inspired from the active sites of hydrogenase enzymes represents a promising route towards developing noble metal-free and sustainable technologies for H2 production. Efficient and stable catalyst anchoring is a key aspect to enable this approach. Herein, we report the preparation and electrochemical characterization of an original diironhexacarbonyl complex including two pyrene groups per catalytic unit in order to allow for its smooth integration, through π-interactions, onto multiwalled carbon nanotube-based electrodes. In this configuration, the grafted catalyst could reach turnover numbers for H2 production (TONH2 ) of up to 4±2×103 within 20 h of bulk electrolysis, operating at neutral pH. Post operando analysis of catalyst functionalized electrodes revealed the degradation of the catalytic unit occurred via loss of the iron carbonyl units, while the anchoring groups and most part of the ligand remained attached onto multiwalled carbon nanotubes.
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Affiliation(s)
- Afridi Zamader
- Univ. Grenoble Alpes, CNRS, CEA, IRIG, Laboratoire de Chimie et Biologie des Métaux, 17 rue des Martyrs, F-38054, Grenoble, Cedex, France.,Molecular Biomimetics, Department of Chemistry - Ångström Laboratory, Uppsala University, Box 523, SE-75120, Uppsala, Sweden
| | - Bertrand Reuillard
- Univ. Grenoble Alpes, CNRS, CEA, IRIG, Laboratoire de Chimie et Biologie des Métaux, 17 rue des Martyrs, F-38054, Grenoble, Cedex, France
| | - Jacques Pécaut
- Univ. Grenoble Alpes, CEA, CNRS, IRIG-SyMMES, UMR 5819, 38000, Grenoble, France
| | - Laurent Billon
- Universite Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM, 64000, Pau, France.,Bio-inspired Materials Group: Functionalities & Self-Assembly, Universite de Pau et Pays de l'Adour, E2S UPPA, 64053, Pau, France
| | - Antoine Bousquet
- Bio-inspired Materials Group: Functionalities & Self-Assembly, Universite de Pau et Pays de l'Adour, E2S UPPA, 64053, Pau, France
| | - Gustav Berggren
- Molecular Biomimetics, Department of Chemistry - Ångström Laboratory, Uppsala University, Box 523, SE-75120, Uppsala, Sweden
| | - Vincent Artero
- Univ. Grenoble Alpes, CNRS, CEA, IRIG, Laboratoire de Chimie et Biologie des Métaux, 17 rue des Martyrs, F-38054, Grenoble, Cedex, France
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Clary KE, Karayilan M, McCleary-Petersen KC, Petersen HA, Glass RS, Pyun J, Lichtenberger DL. Increasing the rate of the hydrogen evolution reaction in neutral water with protic buffer electrolytes. Proc Natl Acad Sci U S A 2020; 117:32947-32953. [PMID: 33310905 PMCID: PMC7777250 DOI: 10.1073/pnas.2012085117] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Electrocatalytic generation of H2 is challenging in neutral pH water, where high catalytic currents for the hydrogen evolution reaction (HER) are particularly sensitive to the proton source and solution characteristics. A tris(hydroxymethyl)aminomethane (TRIS) solution at pH 7 with a [2Fe-2S]-metallopolymer electrocatalyst gave catalytic current densities around two orders of magnitude greater than either a more conventional sodium phosphate solution or a potassium chloride (KCl) electrolyte solution. For a planar polycrystalline Pt disk electrode, a TRIS solution at pH 7 increased the catalytic current densities for H2 generation by 50 mA/cm2 at current densities over 100 mA/cm2 compared to a sodium phosphate solution. As a special feature of this study, TRIS is acting not only as the primary source of protons and the buffer of the pH, but the protonated TRIS ([TRIS-H]+) is also the sole cation of the electrolyte. A species that is simultaneously the proton source, buffer, and sole electrolyte is termed a protic buffer electrolyte (PBE). The structure-activity relationships of the TRIS PBE that increase the HER rate of the metallopolymer and platinum catalysts are discussed. These results suggest that appropriately designed PBEs can improve HER rates of any homogeneous or heterogeneous electrocatalyst system. General guidelines for selecting a PBE to improve the catalytic current density of HER systems are offered.
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Affiliation(s)
- Kayla E. Clary
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, AZ 85721
| | - Metin Karayilan
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, AZ 85721
| | | | - Haley A. Petersen
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, AZ 85721
| | - Richard S. Glass
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, AZ 85721
| | - Jeffrey Pyun
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, AZ 85721
- Department of Chemical and Biological Engineering, Program for Chemical Convergence for Energy and Environment and the Center for Intelligent Hybrids, Seoul National University, 151-744 Seoul, Korea
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Zhong W, Wu L, Jiang W, Li Y, Mookan N, Liu X. Proton-coupled electron transfer in the reduction of diiron hexacarbonyl complexes and its enhancement on the electrocatalytic reduction of protons by a pendant basic group. Dalton Trans 2019; 48:13711-13718. [DOI: 10.1039/c9dt02058f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The pendant basic groups in a diiron complex acted as proton relay to ease the kinetic resistance in proton reduction and enhance proton-coupled electron transfer (PCET).
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Affiliation(s)
- Wei Zhong
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Li Wu
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Weidong Jiang
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan
- Sichuan University of Science & Engineering
- Zigong
- China
| | - Yulong Li
- Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan
- Sichuan University of Science & Engineering
- Zigong
- China
| | - Natarajan Mookan
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
| | - Xiaoming Liu
- College of Biological
- Chemical Sciences and Engineering
- Jiaxing University
- Jiaxing 314001
- China
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Pandey IK, Natarajan M, Kaur-Ghumaan S. Hydrogen generation: aromatic dithiolate-bridged metal carbonyl complexes as hydrogenase catalytic site models. J Inorg Biochem 2014; 143:88-110. [PMID: 25528677 DOI: 10.1016/j.jinorgbio.2014.11.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 11/26/2014] [Accepted: 11/26/2014] [Indexed: 10/24/2022]
Abstract
The design, syntheses and characteristics of metal carbonyl complexes with aromatic dithiolate linkers reported as bioinspired hydrogenase catalytic site models are described and reviewed. Among these the complexes capable of hydrogen generation have been discussed in detail. Comparisons have been made with carbonyl complexes having alkyl dithiolates as linkers between metal centers.
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Affiliation(s)
| | - Mookan Natarajan
- Department of Chemistry, University of Delhi, Delhi 110007, India
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