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Cong D, Sun J, Pan Y, Fang X, Yang L, Zhou W, Yu T, Li Z, Liu C, Deng WQ. Hydrogen-Bond-Network Breakdown Boosts Selective CO 2 Photoreduction by Suppressing H 2 Evolution. Angew Chem Int Ed Engl 2024; 63:e202316991. [PMID: 38520357 DOI: 10.1002/anie.202316991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 02/20/2024] [Accepted: 03/21/2024] [Indexed: 03/25/2024]
Abstract
Conventional strategies for highly efficient and selective CO2 photoreduction focus on the design of catalysts and cocatalysts. In this study, we discover that hydrogen bond network breakdown in reaction system can suppress H2 evolution, thereby improving CO2 photoreduction performance. Photosensitive poly(ionic liquid)s are designed as photocatalysts owing to their strong hydrogen bonding with solvents. The hydrogen bond strength is tuned by solvent composition, thereby effectively regulating H2 evolution (from 0 to 12.6 mmol g-1 h-1). No H2 is detected after hydrogen bond network breakdown with trichloromethane or tetrachloromethane as additives. CO production rate and selectivity increase to 35.4 mmol g-1 h-1 and 98.9 % with trichloromethane, compared with 0.6 mmol g-1 h-1 and 26.2 %, respectively, without trichloromethane. Raman spectroscopy and theoretical calculations confirm that trichloromethane broke the systemic hydrogen bond network and subsequently suppressed H2 evolution. This hydrogen bond network breakdown strategy may be extended to other catalytic reactions involving H2 evolution.
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Affiliation(s)
- Die Cong
- Institute of Frontier Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, China
| | - Jikai Sun
- Institute of Frontier Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, China
| | - Yuwei Pan
- Institute of Frontier Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, China
| | - Xu Fang
- Institute of Frontier Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, China
| | - Li Yang
- Institute of Frontier Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, China
| | - Wei Zhou
- School of Chemistry and Chemical Engineering, Hainan University, Haikou, 570228, China
| | - Tie Yu
- Institute of Frontier Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, China
| | - Zhen Li
- Institute of Frontier Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, China
| | - Chengcheng Liu
- Institute of Frontier Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, China
| | - Wei-Qiao Deng
- Institute of Frontier Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, China
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2
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McCool JD, Zhang S, Cheng I, Zhao X. Rational development of molecular earth-abundant metal complexes for electrocatalytic hydrogen production. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(22)64150-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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3
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Wiedner ES, Appel AM, Raugei S, Shaw WJ, Bullock RM. Molecular Catalysts with Diphosphine Ligands Containing Pendant Amines. Chem Rev 2022; 122:12427-12474. [PMID: 35640056 DOI: 10.1021/acs.chemrev.1c01001] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Pendant amines play an invaluable role in chemical reactivity, especially for molecular catalysts based on earth-abundant metals. As inspired by [FeFe]-hydrogenases, which contain a pendant amine positioned for cooperative bifunctionality, synthetic catalysts have been developed to emulate this multifunctionality through incorporation of a pendant amine in the second coordination sphere. Cyclic diphosphine ligands containing two amines serve as the basis for a class of catalysts that have been extensively studied and used to demonstrate the impact of a pendant base. These 1,5-diaza-3,7-diphosphacyclooctanes, now often referred to as "P2N2" ligands, have profound effects on the reactivity of many catalysts. The resulting [Ni(PR2NR'2)2]2+ complexes are electrocatalysts for both the oxidation and production of H2. Achieving the optimal benefit of the pendant amine requires that it has suitable basicity and is properly positioned relative to the metal center. In addition to the catalytic efficacy demonstrated with [Ni(PR2NR'2)2]2+ complexes for the oxidation and production of H2, catalysts with diphosphine ligands containing pendant amines have also been demonstrated for several metals for many different reactions, both in solution and immobilized on surfaces. The impact of pendant amines in catalyst design continues to expand.
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4
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Affiliation(s)
| | - Brian R. James
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada
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5
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Agarwal RG, Coste SC, Groff BD, Heuer AM, Noh H, Parada GA, Wise CF, Nichols EM, Warren JJ, Mayer JM. Free Energies of Proton-Coupled Electron Transfer Reagents and Their Applications. Chem Rev 2021; 122:1-49. [PMID: 34928136 DOI: 10.1021/acs.chemrev.1c00521] [Citation(s) in RCA: 141] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We present an update and revision to our 2010 review on the topic of proton-coupled electron transfer (PCET) reagent thermochemistry. Over the past decade, the data and thermochemical formalisms presented in that review have been of value to multiple fields. Concurrently, there have been advances in the thermochemical cycles and experimental methods used to measure these values. This Review (i) summarizes those advancements, (ii) corrects systematic errors in our prior review that shifted many of the absolute values in the tabulated data, (iii) provides updated tables of thermochemical values, and (iv) discusses new conclusions and opportunities from the assembled data and associated techniques. We advocate for updated thermochemical cycles that provide greater clarity and reduce experimental barriers to the calculation and measurement of Gibbs free energies for the conversion of X to XHn in PCET reactions. In particular, we demonstrate the utility and generality of reporting potentials of hydrogenation, E°(V vs H2), in almost any solvent and how these values are connected to more widely reported bond dissociation free energies (BDFEs). The tabulated data demonstrate that E°(V vs H2) and BDFEs are generally insensitive to the nature of the solvent and, in some cases, even to the phase (gas versus solution). This Review also presents introductions to several emerging fields in PCET thermochemistry to give readers windows into the diversity of research being performed. Some of the next frontiers in this rapidly growing field are coordination-induced bond weakening, PCET in novel solvent environments, and reactions at material interfaces.
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Affiliation(s)
- Rishi G Agarwal
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Scott C Coste
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Benjamin D Groff
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Abigail M Heuer
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Hyunho Noh
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Giovanny A Parada
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States.,Department of Chemistry, The College of New Jersey, Ewing, New Jersey 08628, United States
| | - Catherine F Wise
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Eva M Nichols
- Department of Chemistry, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
| | - Jeffrey J Warren
- Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - James M Mayer
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
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6
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Ashraf MA, Tambe SD, Cho EJ. Diastereoselective Reductive Cyclization of
Allene‐Tethered
Ketoamines via
Copper‐Catalyzed
Cascade Carboboronation and Protodeborylation. B KOREAN CHEM SOC 2021. [DOI: 10.1002/bkcs.12241] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Muhammad Awais Ashraf
- Department of Chemistry Chung‐Ang University 84 Heukseok‐ro, Dongjak‐gu, Seoul 06974 Republic of Korea
| | - Shrikant D. Tambe
- Department of Chemistry Chung‐Ang University 84 Heukseok‐ro, Dongjak‐gu, Seoul 06974 Republic of Korea
| | - Eun Jin Cho
- Department of Chemistry Chung‐Ang University 84 Heukseok‐ro, Dongjak‐gu, Seoul 06974 Republic of Korea
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7
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A flexible homoleptic pentadentate Cu(II) molecular catalyst for effective proton and water reduction. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136614] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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9
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Katayama A, Wasada-Tsutsui Y, Inomata T, Ozawa T, Masuda H. Theoretical Study of N 2 Coordination to Titanocene(III) Monochloride in Ionic Liquid. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Akira Katayama
- Department of Cooperative Major in Nanopharmaceutical Sciences, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya, Aichi 466-8555, Japan
| | - Yuko Wasada-Tsutsui
- Department of Cooperative Major in Nanopharmaceutical Sciences, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya, Aichi 466-8555, Japan
| | - Tomohiko Inomata
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya, Aichi 466-8555, Japan
| | - Tomohiro Ozawa
- Department of Cooperative Major in Nanopharmaceutical Sciences, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya, Aichi 466-8555, Japan
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya, Aichi 466-8555, Japan
| | - Hideki Masuda
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya, Aichi 466-8555, Japan
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10
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Zaffaroni R, Dzik WI, Detz RJ, van der Vlugt JI, Reek JNH. Proton Relay Effects in Pyridyl‐Appended Hydrogenase Mimics for Proton Reduction Catalysis. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900072] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Riccardo Zaffaroni
- van 't Hoff Institute for Molecular Sciences University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Wojciech I. Dzik
- van 't Hoff Institute for Molecular Sciences University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Remko J. Detz
- van 't Hoff Institute for Molecular Sciences University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
- ECN.TNO Energy Transition Studies Radarweg 60 1043 NT Amsterdam The Netherlands
| | - Jarl Ivar van der Vlugt
- van 't Hoff Institute for Molecular Sciences University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Joost N. H. Reek
- van 't Hoff Institute for Molecular Sciences University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
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11
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12
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Wang JW, Liu WJ, Zhong DC, Lu TB. Nickel complexes as molecular catalysts for water splitting and CO2 reduction. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2017.12.009] [Citation(s) in RCA: 106] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Majee K, Padhi SK. Ligand dechelation effect on a [Co(tpy)2]2+ scaffold towards electro-catalytic proton and water reduction. NEW J CHEM 2019. [DOI: 10.1039/c8nj05712e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This study presents the synthesis of the 4-(2,6-di(pyridin-2-yl)pyridin-4-yl)quinoline (4Ql-tpy) ligand and H2 evolution by corresponding cobalt complex, i.e. [Co(4Ql-tpy)2]Cl2.
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Affiliation(s)
- Karunamay Majee
- Artificial Photosynthesis Laboratory
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad
- India
| | - Sumanta Kumar Padhi
- Artificial Photosynthesis Laboratory
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad
- India
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14
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Klug CM, Cardenas AJP, Bullock RM, O’Hagan M, Wiedner ES. Reversing the Tradeoff between Rate and Overpotential in Molecular Electrocatalysts for H2 Production. ACS Catal 2018. [DOI: 10.1021/acscatal.7b04379] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Christina M. Klug
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - Allan Jay P. Cardenas
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - R. Morris Bullock
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - Molly O’Hagan
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - Eric S. Wiedner
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
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15
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Li X, Lei H, Guo X, Zhao X, Ding S, Gao X, Zhang W, Cao R. Graphene-Supported Pyrene-Modified Cobalt Corrole with Axial Triphenylphosphine for Enhanced Hydrogen Evolution in pH 0-14 Aqueous Solutions. CHEMSUSCHEM 2017; 10:4632-4641. [PMID: 28772058 DOI: 10.1002/cssc.201701196] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 08/02/2017] [Indexed: 06/07/2023]
Abstract
A cobalt complex of 5,15-bis(pentafluorophenyl)-10-(4)-(1-pyrenyl)phenyl corrole that contains a triphenylphosphine axial ligand (1-PPh3 ) was synthesized and examined as an electrocatalyst for the hydrogen evolution reaction (HER). If supported on graphene (G), the resulting 1-PPh3 /G material can catalyze the HER in aqueous solutions over a wide pH range of 0-14 with a high efficiency and durability. The significantly enhanced activity of 1-PPh3 /G, compared with that of its analogues 1-py/G (the Co-bound axial ligand is pyridine instead of triphenylphosphine) and 2-py/G (Co complex of 5,10,15-tris(pentafluorophenyl)corrole), highlights the effects of the pyrenyl substituent and the triphenylphosphine axial ligand on the HER activity. On one hand, the pyrenyl moiety can increase the π-π interactions between 1 and graphene and thus lead to a fast electron transfer from the electrode to 1. On the other hand, the triphenylphosphine axial ligand can increase the electron density (basicity) of Co and thus make the metal center more reactive to protons at the trans position through a so-called "push effect". This study concerns a significant example that shows the trans effect of the axial ligand on the HER, which has been investigated rarely. The combination of various ligand-design strategies in one molecule has been realized in 1-PPh3 to achieve a high catalytic HER performance. These factors are valuable to be used in other molecular catalyst systems.
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Affiliation(s)
- Xialiang Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P.R China
| | - Haitao Lei
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P.R China
| | - Xiaojun Guo
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P.R China
| | - Xueli Zhao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P.R China
| | - Shuping Ding
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P.R China
| | - Xueqing Gao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P.R China
| | - Wei Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P.R China
| | - Rui Cao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P.R China
- Department of Chemistry, Renmin University of China, Beijing, 100872, P.R. China
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16
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Inoue S, Mitsuhashi M, Ono T, Yan YN, Kataoka Y, Handa M, Kawamoto T. Photo- and Electrocatalytic Hydrogen Production Using Valence Isomers of N2S2-Type Nickel Complexes. Inorg Chem 2017; 56:12129-12138. [DOI: 10.1021/acs.inorgchem.7b01244] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Satoshi Inoue
- Department of Chemistry,
Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka 259-1293, Japan
| | - Manabu Mitsuhashi
- Department of Chemistry,
Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka 259-1293, Japan
| | - Takeshi Ono
- Department of Chemistry,
Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka 259-1293, Japan
| | - Yin-Nan Yan
- Department of Chemistry,
Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka 259-1293, Japan
| | - Yusuke Kataoka
- Department of Material Science, Interdisciplinary Graduate School
of Science and Engineering, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan
| | - Makoto Handa
- Department of Material Science, Interdisciplinary Graduate School
of Science and Engineering, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan
| | - Tatsuya Kawamoto
- Department of Chemistry,
Faculty of Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka 259-1293, Japan
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17
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Katayama A, Inomata T, Ozawa T, Masuda H. Ionic liquid promotes N 2 coordination to titanocene(iii) monochloride. Dalton Trans 2017; 46:7668-7671. [PMID: 28574550 DOI: 10.1039/c7dt01063j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Coordination of N2 to [(Cp2TiCl)2] in a non-coordinating ionic liquid, Pyr4FAP, was studied by UV-vis/NIR and EPR spectroscopies. [(Cp2TiCl)2] is in equilibrium between monomeric [Cp2TiCl] and dimeric species [(Cp2TiCl)2]. The frozen solution EPR spectrum revealed the coordination of N2 to [Cp2TiCl], suggesting that Pyr4FAP promotes N2 coordination to the Ti(iii) center.
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Affiliation(s)
- Akira Katayama
- Department of Cooperative Major in Nanopharmaceutical Sciences, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Japan
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18
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Khrizanforova V, Morozov V, Strelnik A, Spiridonova YS, Khrizanforov M, Burganov T, Katsyuba S, Latypov SK, Kadirov M, Karasik A, Sinyashin O, Budnikova Y. In situ electrochemical synthesis of Ni(I) complexes with aminomethylphosphines as intermediates for hydrogen evolution. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2016.12.081] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Zhao X, Wang P, Long M. Electro- and Photocatalytic Hydrogen Production by Molecular Cobalt Complexes With Pentadentate Ligands. COMMENT INORG CHEM 2016. [DOI: 10.1080/02603594.2016.1266618] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Xuan Zhao
- Department of Chemistry, University of Memphis, Memphis, Tennessee, USA
| | - Ping Wang
- Department of Chemistry, University of Memphis, Memphis, Tennessee, USA
| | - Melissa Long
- Department of Chemistry, University of Memphis, Memphis, Tennessee, USA
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20
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Garrett BR, Click KA, Durr CB, Hadad CM, Wu Y. [MoO(S 2) 2L] 1- (L = picolinate or pyrimidine-2-carboxylate) Complexes as MoS x-Inspired Electrocatalysts for Hydrogen Production in Aqueous Solution. J Am Chem Soc 2016; 138:13726-13731. [PMID: 27690413 DOI: 10.1021/jacs.6b08652] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Crystalline and amorphous molybdenum sulfide (Mo-S) catalysts are leaders as earth-abundant materials for electrocatalytic hydrogen production. The development of a molecular motif inspired by the Mo-S catalytic materials and their active sites is of interest, as molecular species possess a great degree of tunable electronic properties. Furthermore, these molecular mimics may be important for providing mechanistic insights toward the hydrogen evolution reaction (HER) with Mo-S electrocatalysts. Herein is presented two water-soluble Mo-S complexes based around the [MoO(S2)2L2]1- motif. We present 1H NMR spectra that reveal (NEt4)[MoO(S2)2picolinate] (Mo-pic) is stable in a d6-DMSO solution after heating at 100 °C, in air, revealing unprecedented thermal and aerobic stability of the homogeneous electrocatalyst. Both Mo-pic and (NEt4)[MoO(S2)2pyrimidine-2-carboxylate] (Mo-pym) are shown to be homogeneous electrocatalysts for the HER. The TOF of 27-34 s-1 and 42-48 s-1 for Mo-pic and Mo-pym and onset potentials of 240 mV and 175 mV for Mo-pic and Mo-pym, respectively, reveal these complexes as promising electrocatalysts for the HER.
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Affiliation(s)
- Benjamin R Garrett
- Department of Chemistry and Biochemistry, The Ohio State University , 100 West 18th Avenue, Columbus, Ohio 43210, United States
| | - Kevin A Click
- Department of Chemistry and Biochemistry, The Ohio State University , 100 West 18th Avenue, Columbus, Ohio 43210, United States
| | - Christopher B Durr
- Department of Chemistry and Biochemistry, The Ohio State University , 100 West 18th Avenue, Columbus, Ohio 43210, United States
| | - Christopher M Hadad
- Department of Chemistry and Biochemistry, The Ohio State University , 100 West 18th Avenue, Columbus, Ohio 43210, United States
| | - Yiying Wu
- Department of Chemistry and Biochemistry, The Ohio State University , 100 West 18th Avenue, Columbus, Ohio 43210, United States
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21
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Cardenas AJP, Ginovska B, Kumar N, Hou J, Raugei S, Helm ML, Appel AM, Bullock RM, O'Hagan M. Controlling Proton Delivery through Catalyst Structural Dynamics. Angew Chem Int Ed Engl 2016; 55:13509-13513. [PMID: 27677094 DOI: 10.1002/anie.201607460] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Indexed: 01/12/2023]
Abstract
The fastest synthetic molecular catalysts for H2 production and oxidation emulate components of the active site of hydrogenases. The critical role of controlled structural dynamics is recognized for many enzymes, including hydrogenases, but is largely neglected in designing synthetic catalysts. Our results demonstrate the impact of controlling structural dynamics on H2 production rates for [Ni(PPh2 NC6H4R2 )2 ]2+ catalysts (R=n-hexyl, n-decyl, n-tetradecyl, n-octadecyl, phenyl, or cyclohexyl). The turnover frequencies correlate inversely with the rates of chair-boat ring inversion of the ligand, since this dynamic process governs protonation at either catalytically productive or non-productive sites. These results demonstrate that the dynamic processes involved in proton delivery can be controlled through modification of the outer coordination sphere, in a manner similar to the role of the protein architecture in many enzymes. As a design parameter, controlling structural dynamics can increase H2 production rates by three orders of magnitude with a minimal increase in overpotential.
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Affiliation(s)
- Allan Jay P Cardenas
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, WA, 99352, USA.,221 Science Center, State University of New York at Fredonia, Fredonia, NY, 14063, USA
| | - Bojana Ginovska
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, WA, 99352, USA
| | - Neeraj Kumar
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, WA, 99352, USA
| | - Jianbo Hou
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, WA, 99352, USA
| | - Simone Raugei
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, WA, 99352, USA
| | - Monte L Helm
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, WA, 99352, USA
| | - Aaron M Appel
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, WA, 99352, USA
| | - R Morris Bullock
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, WA, 99352, USA
| | - Molly O'Hagan
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, WA, 99352, USA.
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22
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Cardenas AJP, Ginovska B, Kumar N, Hou J, Raugei S, Helm ML, Appel AM, Bullock RM, O'Hagan M. Controlling Proton Delivery through Catalyst Structural Dynamics. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607460] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Allan Jay P. Cardenas
- Center for Molecular Electrocatalysis; Pacific Northwest National Laboratory; P.O. Box 999, K2-57 Richland WA 99352 USA
- 221 Science Center; State University of New York at Fredonia; Fredonia NY 14063 USA
| | - Bojana Ginovska
- Center for Molecular Electrocatalysis; Pacific Northwest National Laboratory; P.O. Box 999, K2-57 Richland WA 99352 USA
| | - Neeraj Kumar
- Center for Molecular Electrocatalysis; Pacific Northwest National Laboratory; P.O. Box 999, K2-57 Richland WA 99352 USA
| | - Jianbo Hou
- Center for Molecular Electrocatalysis; Pacific Northwest National Laboratory; P.O. Box 999, K2-57 Richland WA 99352 USA
| | - Simone Raugei
- Center for Molecular Electrocatalysis; Pacific Northwest National Laboratory; P.O. Box 999, K2-57 Richland WA 99352 USA
| | - Monte L. Helm
- Center for Molecular Electrocatalysis; Pacific Northwest National Laboratory; P.O. Box 999, K2-57 Richland WA 99352 USA
| | - Aaron M. Appel
- Center for Molecular Electrocatalysis; Pacific Northwest National Laboratory; P.O. Box 999, K2-57 Richland WA 99352 USA
| | - R. Morris Bullock
- Center for Molecular Electrocatalysis; Pacific Northwest National Laboratory; P.O. Box 999, K2-57 Richland WA 99352 USA
| | - Molly O'Hagan
- Center for Molecular Electrocatalysis; Pacific Northwest National Laboratory; P.O. Box 999, K2-57 Richland WA 99352 USA
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23
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Budnikova YH, Khrizanforova VV, Fedushkin IL, Karasik AA. Iron or nickel complexes bearing diphosphine and BIAN ligands as electrocatalysts for H2 evolution. PHOSPHORUS SULFUR 2016. [DOI: 10.1080/10426507.2016.1223664] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Y. H. Budnikova
- A. E. Arbuzov Institute of Organic and Physical Chemistry, KSC of RAS, Kazan, Russia
| | - V. V. Khrizanforova
- A. E. Arbuzov Institute of Organic and Physical Chemistry, KSC of RAS, Kazan, Russia
| | - I. L. Fedushkin
- G. A. Razuvaev Institute of Organometallic Chemistry, RAS, Nizhny Novgorod, Russia
| | - A. A. Karasik
- A. E. Arbuzov Institute of Organic and Physical Chemistry, KSC of RAS, Kazan, Russia
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24
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Tsay C, Yang JY. Electrocatalytic Hydrogen Evolution under Acidic Aqueous Conditions and Mechanistic Studies of a Highly Stable Molecular Catalyst. J Am Chem Soc 2016; 138:14174-14177. [PMID: 27416063 DOI: 10.1021/jacs.6b05851] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Electrocatalytic activity of a water-soluble nickel complex, [Ni(DHMPE)2]2+ (DHMPE = 2-bis(di(hydroxymethyl)phosphino)ethane), for the hydrogen evolution reaction (HER) at pH 1 is reported. The catalyst functions at a rate of ∼103 s-1 (kobs) with high Faradaic efficiency. Quantification of the complex before and after 18+ hours of electrolysis reveals negligible decomposition under catalytic conditions. Although highly acidic conditions are common in electrolytic cells, this is a rare example of a homogeneous catalyst for HER that functions with high stability at low pH. The stability of the compound and proposed catalytic intermediates enabled detailed mechanistic studies. The thermodynamic parameters governing electron and proton transfer were used to determine the appropriate reductants and acids to access the catalytic cycle in a stepwise fashion, permitting direct spectroscopic identification of intermediates. These studies support a mechanism for proton reduction that proceeds through two-electron reduction of the nickel(II) complex, protonation to generate [HNi(DHMPE)2]+, and further protonation to initiate hydrogen bond formation.
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Affiliation(s)
- Charlene Tsay
- Department of Chemistry, University of California , Irvine, California 92697, United States
| | - Jenny Y Yang
- Department of Chemistry, University of California , Irvine, California 92697, United States
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25
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REBACK MATTHEWL, GINOVSKA BOJANA, BUCHKO GARRYW, DUTTA ARNAB, PRIYADARSHANI NILUSHA, KIER BRANDONL, HELM MONTEL, RAUGEI SIMONE, SHAW WENDYJ. Investigating the role of chain and linker length on the catalytic activity of an H 2 production catalyst containing a β-hairpin peptide. J COORD CHEM 2016; 69:1730-1747. [PMID: 33093711 PMCID: PMC7577397 DOI: 10.1080/00958972.2016.1188924] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 03/23/2016] [Indexed: 12/20/2022]
Abstract
Building on our recent report of an active H2 production catalyst [Ni(PPh 2NProp-peptide)2]2+ (Prop = para-phenylpropionic acid, peptide (R10) = WIpPRWTGPR-NH2, p = D-proline and P2N = 1-aza-3,6-diphosphacycloheptane) that contains structured β-hairpin peptides, here we investigate how H2 production is effected by: (1) the length of the hairpin (eight or ten residues) and (2) limiting the flexibility between the peptide and the core complex by altering the length of the linker: para-phenylpropionic acid (three carbons) or para-benzoic acid (one carbon). Reduction of the peptide chain length from ten to eight residues increases or maintains the catalytic current for H2 production for all complexes, suggesting a non-productive steric interaction at longer peptide lengths. While the structure of the hairpin appears largely intact for the complexes, NMR data are consistent with differences in dynamic behavior which may contribute to the observed differences in catalytic activity. Molecular dynamics simulations demonstrate that complexes with a one-carbon linker have the desired effect of restricting the motion of the hairpin relative to the complex; however, the catalytic currents are significantly reduced compared to complexes containing a three-carbon linker as a result of the electron withdrawing nature of the -COOH group. These results demonstrate the complexity and interrelated nature of the outer coordination sphere on catalysis.
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Affiliation(s)
| | - BOJANA GINOVSKA
- Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - GARRY W. BUCHKO
- Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - ARNAB DUTTA
- Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | | | | | - MONTE L. HELM
- Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - SIMONE RAUGEI
- Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - WENDY J. SHAW
- Pacific Northwest National Laboratory, Richland, WA 99352, USA
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26
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Katayama A, Inomata T, Ozawa T, Masuda H. Electrochemical conversion of dinitrogen to ammonia induced by a metal complex–supported ionic liquid. Electrochem commun 2016. [DOI: 10.1016/j.elecom.2016.03.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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27
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Latypov S, Strelnik A, Balueva A, Spiridonova Y, Karasik A, Sinyashin O. Conformational Analysis of P,N-Containing Eight-Membered Heterocycles and Their Pt/Ni Complexes in Solution. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501331] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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Wiedner ES, Brown HJS, Helm ML. Kinetic Analysis of Competitive Electrocatalytic Pathways: New Insights into Hydrogen Production with Nickel Electrocatalysts. J Am Chem Soc 2016; 138:604-16. [PMID: 26692398 DOI: 10.1021/jacs.5b10853] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The hydrogen production electrocatalyst Ni(P(Ph)2N(Ph)2)2(2+) (1) is capable of traversing multiple electrocatalytic pathways. When using dimethylformamidium, DMF(H)(+), the mechanism of H2 formation by 1 changes from an ECEC to an EECC mechanism as the potential approaches the Ni(I/0) couple. Two electrochemical methods, current-potential analysis and foot-of-the-wave analysis (FOWA), were performed on 1 to measure detailed kinetics of the competing ECEC and EECC pathways. A sensitivity analysis was performed on the methods using digital simulations to understand their strengths and limitations. Chemical rate constants were significantly underestimated when not accounting for electron-transfer kinetics, even when electron transfer was fast enough to afford a reversible noncatalytic wave. The EECC pathway of 1 was faster than the ECEC pathway under all conditions studied. Buffered DMF:DMF(H)(+) mixtures afforded an increase in the catalytic rate constant (k(obs)) of the EECC pathway, but k(obs) for the ECEC pathway did not change when using buffered acid. Further kinetic analysis of the ECEC path revealed that base increases the rate of isomerization from exo-protonated Ni(0) isomers to the catalytically active endo-isomers, but decreases the rate of protonation of Ni(I). FOWA did not provide accurate rate constants, but FOWA was used to estimate the reduction potential of the previously undetected exo-protonated Ni(I) intermediate. Comparison of catalytic Tafel plots for 1 under different conditions reveals substantial inaccuracies in the turnover frequency at zero overpotential when the kinetic and thermodynamic effects of the conjugate base are not accounted for properly.
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Affiliation(s)
- Eric S Wiedner
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory , P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - Houston J S Brown
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory , P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - Monte L Helm
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory , P.O. Box 999, K2-57, Richland, Washington 99352, United States
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29
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Dutta A, Ginovska B, Raugei S, Roberts JAS, Shaw WJ. Optimizing conditions for utilization of an H2 oxidation catalyst with outer coordination sphere functionalities. Dalton Trans 2016; 45:9786-93. [DOI: 10.1039/c6dt00280c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
[Ni(PCy2NArginine2)2]2+ (CyArg) or [Ni(PCy2NBenzyl2)2]2+ (CyBn) were evaluated for H2 oxidation as a function of temperature, pressure, and solvent. 70 °C and 100 atm H2 result in a TOF of 1.1 × 106 s−1 and an overpotential of 240 mV for CyArg in water. In methanol the rates were 280 s−1 for CyArg and 80 s−1 for CyBn, demonstrating the importance of water and the outer coordination sphere (OCS).
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Affiliation(s)
- Arnab Dutta
- Pacific Northwest National Laboratory
- Richland
- USA
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30
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Wang R, Zhao M, Chen C. Influence of ligand second coordination sphere effects on the olefin (co)polymerization properties of α-diimine Pd(ii) catalysts. Polym Chem 2016. [DOI: 10.1039/c6py00750c] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A series of α-diimine ligands and their corresponding palladium complexes were synthesized and characterized.
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Affiliation(s)
- Ruikun Wang
- Key Laboratory of Soft Matter Chemistry
- Chinese Academy of Sciences
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
| | - Minhui Zhao
- Key Laboratory of Soft Matter Chemistry
- Chinese Academy of Sciences
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
| | - Changle Chen
- Key Laboratory of Soft Matter Chemistry
- Chinese Academy of Sciences
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei
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31
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Li T, Wang X, Yuan W, Li CM. Unique Co-Catalytic Behavior of Protic Ionic Liquids as Multifunctional Electrolytes for Water Splitting. ChemElectroChem 2015. [DOI: 10.1002/celc.201500458] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tianhao Li
- Institute of Clean Energy & Advanced Materials; Faculty of Materials and Energy; Southwest University, No.2; Tiansheng Road, Beibei Chongqing 400715 China
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energy; Southwest University, No.2; Tiansheng Road, Beibei Chongqing 400715 China
| | - Xiaoyan Wang
- Institute of Clean Energy & Advanced Materials; Faculty of Materials and Energy; Southwest University, No.2; Tiansheng Road, Beibei Chongqing 400715 China
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energy; Southwest University, No.2; Tiansheng Road, Beibei Chongqing 400715 China
| | - Weiyong Yuan
- Institute of Clean Energy & Advanced Materials; Faculty of Materials and Energy; Southwest University, No.2; Tiansheng Road, Beibei Chongqing 400715 China
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energy; Southwest University, No.2; Tiansheng Road, Beibei Chongqing 400715 China
| | - Chang Ming Li
- Institute of Clean Energy & Advanced Materials; Faculty of Materials and Energy; Southwest University, No.2; Tiansheng Road, Beibei Chongqing 400715 China
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energy; Southwest University, No.2; Tiansheng Road, Beibei Chongqing 400715 China
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32
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Ho MH, Rousseau R, Roberts JAS, Wiedner ES, Dupuis M, DuBois DL, Bullock RM, Raugei S. Ab Initio-Based Kinetic Modeling for the Design of Molecular Catalysts: The Case of H2 Production Electrocatalysts. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01152] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ming-Hsun Ho
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K1-83, Richland, Washington 99352, United States
| | - Roger Rousseau
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K1-83, Richland, Washington 99352, United States
| | - John A. S. Roberts
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K1-83, Richland, Washington 99352, United States
| | - Eric S. Wiedner
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K1-83, Richland, Washington 99352, United States
| | - Michel Dupuis
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K1-83, Richland, Washington 99352, United States
| | - Daniel L. DuBois
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K1-83, Richland, Washington 99352, United States
| | - R. Morris Bullock
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K1-83, Richland, Washington 99352, United States
| | - Simone Raugei
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K1-83, Richland, Washington 99352, United States
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33
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Xie J, Xie Y. Structural Engineering of Electrocatalysts for the Hydrogen Evolution Reaction: Order or Disorder? ChemCatChem 2015. [DOI: 10.1002/cctc.201500396] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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34
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Kochem A, O'Hagan M, Wiedner ES, van Gastel M. Combined Spectroscopic and Electrochemical Detection of a NiI⋅⋅⋅HN Bonding Interaction with Relevance to Electrocatalytic H2Production. Chemistry 2015; 21:10338-47. [DOI: 10.1002/chem.201500954] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Indexed: 11/11/2022]
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35
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Liu T, Liao Q, O’Hagan M, Hulley EB, DuBois DL, Bullock RM. Iron Complexes Bearing Diphosphine Ligands with Positioned Pendant Amines as Electrocatalysts for the Oxidation of H2. Organometallics 2015. [DOI: 10.1021/om501289f] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
| | - Qian Liao
- Center
for Molecular Electrocatalysis, Physical Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, K2-12, Richland, Washington 99352 United States
- Department
of Chemistry, Tsinghua University, Beijing 100084, China
| | - Molly O’Hagan
- Center
for Molecular Electrocatalysis, Physical Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, K2-12, Richland, Washington 99352 United States
| | - Elliott B. Hulley
- Department
of Chemistry, University of Wyoming, Dept. 3838, Laramie, Wyoming 82071 United States
| | - Daniel L. DuBois
- Center
for Molecular Electrocatalysis, Physical Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, K2-12, Richland, Washington 99352 United States
| | - R. Morris Bullock
- Center
for Molecular Electrocatalysis, Physical Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, K2-12, Richland, Washington 99352 United States
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36
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Li P, Zaffaroni R, de Bruin B, Reek JNH. New tetracobalt cluster compounds for electrocatalytic proton reduction: syntheses, structures, and reactivity. Chemistry 2015; 21:4027-38. [PMID: 25639914 DOI: 10.1002/chem.201405052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 12/05/2014] [Indexed: 11/07/2022]
Abstract
Reaction of Co2(CO)8 and 1,3-propanedithiol in a 1:1 molar ratio in toluene affords a novel tetracobalt complex, [(μ2-pdt)2(μ3-S)Co4(CO)6] (pdt = -SCH2CH2CH2S-, 1), which possesses some of the structural features of the active site of [FeFe]-hydrogenase. Carbonyl displacement reaction of complex 1 in the presence of mono- or diphosphine ligands leads to the formation of [(μ2-pdt)2(μ3-S)Co4(CO)5(PCy3)] (2) and [(μ2-pdt)2(μ3-S)Co4(CO)4(L)] [L = Ph2PCH=CHPPh2, 3; Ph2PCH2N(Ph)CH2PPh2, 4; Ph2PCH2N(iPr)CH2PPh2, 5]. Complexes 1-5 have been fully characterized by spectroscopy and single-crystal X-ray diffraction studies. Cyclic voltammetry has revealed that complexes 1-5 show a reversible first reduction wave and are active for electrocatalytic proton reduction in the presence of CF3COOH. Protonation reactions have been monitored by (31)P and (1)H NMR and infrared spectroscopies, which revealed the formation of different protonated species. The mono-reduced species of 1-5 have been spectroscopically characterized by EPR and spectro-electro-infrared techniques.
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Affiliation(s)
- Ping Li
- Homogeneous & Supramolecular Catalysis van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam (The Netherlands), Fax: (+31) 20-525-5265
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37
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Ho MH, O'Hagan M, Dupuis M, DuBois DL, Bullock RM, Shaw WJ, Raugei S. Water-assisted proton delivery and removal in bio-inspired hydrogen production catalysts. Dalton Trans 2015; 44:10969-79. [DOI: 10.1039/c5dt00782h] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Water is found to accelerate proton delivery and removal in electrocatalysts for H2 production, resulting in a marked increase in the catalytic rates. The significant reduction in protonation/deprotonation barriers observed in the presence of water has important implications for design catalysts with improved performance.
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Affiliation(s)
- Ming-Hsun Ho
- Center for Molecular Electrocatalysis
- Pacific Northwest National Laboratory
- Richland
- USA
| | - Molly O'Hagan
- Center for Molecular Electrocatalysis
- Pacific Northwest National Laboratory
- Richland
- USA
| | - Michel Dupuis
- Center for Molecular Electrocatalysis
- Pacific Northwest National Laboratory
- Richland
- USA
| | - Daniel L. DuBois
- Center for Molecular Electrocatalysis
- Pacific Northwest National Laboratory
- Richland
- USA
| | - R. Morris Bullock
- Center for Molecular Electrocatalysis
- Pacific Northwest National Laboratory
- Richland
- USA
| | - Wendy J. Shaw
- Center for Molecular Electrocatalysis
- Pacific Northwest National Laboratory
- Richland
- USA
| | - Simone Raugei
- Center for Molecular Electrocatalysis
- Pacific Northwest National Laboratory
- Richland
- USA
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38
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Heterocyclic Phosphines with P-C-X Fragments (X=O, N, P). ADVANCES IN HETEROCYCLIC CHEMISTRY 2015. [DOI: 10.1016/bs.aihch.2015.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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39
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Gan L, Jennings D, Laureanti J, Jones AK. Biomimetic Complexes for Production of Dihydrogen and Reduction of CO2. TOP ORGANOMETAL CHEM 2015. [DOI: 10.1007/3418_2015_146] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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40
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Zhang P, Wang M, Yang Y, Yao T, Sun L. A molecular copper catalyst for electrochemical water reduction with a large hydrogen-generation rate constant in aqueous solution. Angew Chem Int Ed Engl 2014; 53:13803-7. [PMID: 25314646 DOI: 10.1002/anie.201408266] [Citation(s) in RCA: 153] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Indexed: 11/12/2022]
Abstract
The copper complex [(bztpen)Cu](BF4)2 (bztpen=N-benzyl-N,N',N'-tris(pyridin-2-ylmethyl)ethylenediamine) displays high catalytic activity for electrochemical proton reduction in acidic aqueous solutions, with a calculated hydrogen-generation rate constant (k(obs)) of over 10000 s(-1). A turnover frequency (TOF) of 7000 h(-1) cm(-2) and a Faradaic efficiency of 96% were obtained from a controlled potential electrolysis (CPE) experiment with [(bztpen)Cu](2+) in pH 2.5 buffer solution at -0.90 V versus the standard hydrogen electrode (SHE) over two hours using a glassy carbon electrode. A mechanism involving two proton-coupled reduction steps was proposed for the dihydrogen generation reaction catalyzed by [(bztpen)Cu](2+).
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Affiliation(s)
- Peili Zhang
- State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), 116024 Dalian (China)
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41
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Zhang P, Wang M, Yang Y, Yao T, Sun L. A Molecular Copper Catalyst for Electrochemical Water Reduction with a Large Hydrogen-Generation Rate Constant in Aqueous Solution. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201408266] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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42
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Ginovska-Pangovska B, Dutta A, Reback ML, Linehan JC, Shaw WJ. Beyond the active site: the impact of the outer coordination sphere on electrocatalysts for hydrogen production and oxidation. Acc Chem Res 2014; 47:2621-30. [PMID: 24945095 DOI: 10.1021/ar5001742] [Citation(s) in RCA: 123] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Redox active metalloenzymes play a major role in energy transformation reactions in biological systems. Examples include formate dehydrogenases, nitrogenases, CO dehydrogenase, and hydrogenases. Many of these reactions are also of interest to humans as potential energy storage or utilization reactions for photoelectrochemical, electrolytic, and fuel cell applications. These metalloenzymes consist of redox active metal centers where substrates are activated and undergo transformation to products accompanied by electron and proton transfer to or from the substrate. These active sites are typically buried deep within a protein matrix of the enzyme with channels for proton transport, electron transport, and substrate/product transport between the active site and the surface of the protein. In addition, there are amino acid residues that lie in close proximity to the active site that are thought to play important roles in regulating and enhancing enzyme activity. Directly studying the outer coordination sphere of enzymes can be challenging due to their complexity, and the use of modified molecular catalysts may allow us to provide some insight. There are two fundamentally different approaches to understand these important interactions. The "bottom-up" approach involves building an amino acid or peptide containing outer coordination sphere around a functional molecular catalyst, and the "top-down" approach involves attaching molecular catalyst to a structured protein. Both of these approaches have been undertaken for hydrogenase mimics and are the emphasis of this Account. Our focus has been to utilize amino acid or peptide based scaffolds on an active functional enzyme mimic for H2 oxidation and production, [Ni(P(R)2N(R('))2)2](2+). This "bottom-up" approach has allowed us to evaluate individual functional group and structural contributions to electrocatalysts for H2 oxidation and production. For instance, using amine, ether, and carboxylic acid functionalities in the outer coordination sphere enhances proton movement and results in lower catalytic overpotentials for H2 oxidation, while achieving water solubility in some cases. Amino acids with acidic and basic side chains concentrate substrate around catalysts for H2 production, resulting in up to 5-fold enhancements in rate. The addition of a structured peptide in an H2 production catalyst limited the structural freedom of the amino acids nearest the active site, while enhancing the overall rate. Enhanced stability to oxygen or extreme conditions such as strongly acidic or basic conditions has also resulted from an amino acid based outer coordination sphere. From the "top-down" approach, others have achieved water solubility and photocatalytic activity by associating this core complex with photosystem-I. Collectively, by use of this well understood core, the role of individual and combined features of the outer coordination sphere are starting to be understood at a mechanistic level. Common mechanisms have yet to be defined to predictably control these processes, but our growing knowledge in this area is essential for the eventual mimicry of enzymes by efficient molecular catalysts for practical use.
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Affiliation(s)
| | - Arnab Dutta
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Matthew L. Reback
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - John C. Linehan
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Wendy J. Shaw
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
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Das AK, Engelhard MH, Bullock RM, Roberts JAS. A hydrogen-evolving Ni(P2N2)2 electrocatalyst covalently attached to a glassy carbon electrode: preparation, characterization, and catalysis. comparisons with the homogeneous analogue. Inorg Chem 2014; 53:6875-85. [PMID: 24971843 DOI: 10.1021/ic500701a] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A hydrogen-evolving homogeneous Ni(P2N2)2 electrocatalyst with peripheral ester groups has been covalently attached to a 1,2,3-triazolyllithium-terminated planar glassy carbon electrode surface. Coupling proceeds with both the Ni(0) and the Ni(II) complexes. X-ray photoemission spectra show excellent agreement between the Ni(0) coupling product and its parent complex, and voltammetry of the surface-confined system shows that a single species predominates with a surface density of 1.3 × 10(-10) mol cm(-2), approaching the value estimated for a densely packed monolayer. With the Ni(II) system, both photoemission and voltammetric data show speciation to unidentified products on coupling, and the surface density is 6.7 × 10(-11) mol cm(-2). The surface-confined Ni(0) complex is an electroctalyst for hydrogen evolution, showing the onset of catalytic current at the same potential as the soluble parent complex. Decomposition of the surface-confined species is observed in acidic acetonitrile. This is interpreted to reflect the lability of the Ni(II)-phosphine interaction and the basicity of the free phosphine and bears on concurrent efforts to implement surface-confined Ni(P2N2)2 complexes in electrochemical or photoelectrochemical devices.
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Affiliation(s)
- Atanu K Das
- Center for Molecular Electrocatalysis, Physical Sciences Division, K2-57, Pacific Northwest National Laboratory , P.O. Box 999, Richland, Washington 99352, United States
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44
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Affiliation(s)
- Daniel L. DuBois
- Center for Molecular Electrocatalysis, Chemical and Materials
Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
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45
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Affiliation(s)
- Aaron M. Appel
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - Monte L. Helm
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
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46
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Zhang P, Wang M, Yang Y, Zheng D, Han K, Sun L. Highly efficient molecular nickel catalysts for electrochemical hydrogen production from neutral water. Chem Commun (Camb) 2014; 50:14153-6. [DOI: 10.1039/c4cc05511j] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Nickel complexes containing N5-pentadentate scaffolds display a TON of H2 evolution of up to 308 000 over 60 h electrolysis in neutral water at −1.25 V vs. SHE without considerable loss in activity.
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Affiliation(s)
- Peili Zhang
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024, China
| | - Mei Wang
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024, China
| | - Yong Yang
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024, China
| | - Dehua Zheng
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024, China
| | - Kai Han
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024, China
| | - Licheng Sun
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024, China
- Department of Chemistry
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47
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Bullock RM, Appel AM, Helm ML. Production of hydrogen by electrocatalysis: making the H–H bond by combining protons and hydrides. Chem Commun (Camb) 2014; 50:3125-43. [DOI: 10.1039/c3cc46135a] [Citation(s) in RCA: 213] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Electrocatalytic production of hydrogen by nickel complexes is reviewed, with an emphasis on heterocoupling of protons and hydrides.
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Affiliation(s)
- R. Morris Bullock
- Center for Molecular Electrocatalysis (efrc.pnnl.gov)
- Physical Sciences Division
- Pacific Northwest National Laboratory
- , USA
| | - Aaron M. Appel
- Center for Molecular Electrocatalysis (efrc.pnnl.gov)
- Physical Sciences Division
- Pacific Northwest National Laboratory
- , USA
| | - Monte L. Helm
- Center for Molecular Electrocatalysis (efrc.pnnl.gov)
- Physical Sciences Division
- Pacific Northwest National Laboratory
- , USA
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48
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Dutta A, Lense S, Hou J, Engelhard MH, Roberts JAS, Shaw WJ. Minimal proton channel enables H2 oxidation and production with a water-soluble nickel-based catalyst. J Am Chem Soc 2013; 135:18490-6. [PMID: 24206187 DOI: 10.1021/ja407826d] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Hydrogenase enzymes use first-row transition metals to interconvert H2 with protons and electrons, reactions that are important for the storage and recovery of energy from intermittent sources such as solar, hydroelectric, and wind. Here we present Ni(P(Cy)2N(Gly)2)2, a water-soluble molecular electrocatalyst with the amino acid glycine built into the diphosphine ligand framework. Proton transfer between the outer coordination sphere carboxylates and the second coordination sphere pendant amines is rapid, as observed by cyclic voltammetry and FTIR spectroscopy, indicating that the carboxylate groups may participate in proton transfer during catalysis. This complex oxidizes H2 (1-33 s(-1)) at low overpotentials (150-365 mV) over a range of pH values (0.1-9.0) and produces H2 under identical solution conditions (>2400 s(-1) at pH 0.5). Enzymes employ proton channels for the controlled movement of protons over long distances-the results presented here demonstrate the effects of a simple two-component proton channel in a synthetic molecular electrocatalyst.
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Affiliation(s)
- Arnab Dutta
- Pacific Northwest National Laboratory , Richland, Washington 99352, United States
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49
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Faiella M, Roy A, Sommer D, Ghirlanda G. De novo design of functional proteins: Toward artificial hydrogenases. Biopolymers 2013; 100:558-71. [DOI: 10.1002/bip.22420] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 07/08/2013] [Accepted: 09/18/2013] [Indexed: 12/18/2022]
Affiliation(s)
- Marina Faiella
- Department of Chemistry and Biochemistry; Arizona State University; Tempe AZ
| | - Anindya Roy
- Department of Chemistry and Biochemistry; Arizona State University; Tempe AZ
| | - Dayn Sommer
- Department of Chemistry and Biochemistry; Arizona State University; Tempe AZ
| | - Giovanna Ghirlanda
- Department of Chemistry and Biochemistry; Arizona State University; Tempe AZ
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50
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Franz JA, O’Hagan M, Ho MH, Liu T, Helm ML, Lense S, DuBois DL, Shaw WJ, Appel AM, Raugei S, Bullock RM. Conformational Dynamics and Proton Relay Positioning in Nickel Catalysts for Hydrogen Production and Oxidation. Organometallics 2013. [DOI: 10.1021/om400695w] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- James A. Franz
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - Molly O’Hagan
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - Ming-Hsun Ho
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - Tianbiao Liu
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - Monte L. Helm
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - Sheri Lense
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - Daniel L. DuBois
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - Wendy J. Shaw
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - Aaron M. Appel
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - Simone Raugei
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - R. Morris Bullock
- Center
for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
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