1
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Li X, Ng BKY, Ho PL, Jia C, Shang J, Yoskamtorn T, Pan X, Li Y, Li G, Wu TS, Soo YL, He H, Yue B, Tsang SCE. Stabilization of Ni-containing Keggin-type polyoxometalates with variable oxidation states as novel catalysts for electrochemical water oxidation. Chem Sci 2024; 15:9201-9215. [PMID: 38903226 PMCID: PMC11186315 DOI: 10.1039/d4sc01087f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 05/11/2024] [Indexed: 06/22/2024] Open
Abstract
The development of new recyclable and inexpensive electrochemically active species for water oxidation catalysis is the most crucial step for future utilization of renewables. Particularly, transition metal complexes containing internal multiple, cooperative metal centers to couple with redox catalysts in the inorganic Keggin-type polyoxometalate (POM) framework at high potential or under extreme pH conditions would be promising candidates. However, most reported Ni-containing POMs have been highly unstable towards hydrolytic decomposition, which precludes them from application as water oxidation catalysts (WOCs). Here, we have prepared new tri-Ni-containing POMs with variable oxidation states by charge tailored synthetic strategies for the first time and developed them as recyclable POMs for water oxidation catalysts. In addition, by implanting corresponding POM anions into the positively charged MIL-101(Cr) metal-organic framework (MOF), the entrapped Ni2+/Ni3+ species can show complete recyclability for water oxidation catalysis without encountering uncontrolled hydrolysis of the POM framework. As a result, a low onset potential of approximately 1.46 V vs. NHE for water oxidation with stable WOC performance is recorded. Based on this study, rational design and stabilization of other POM-electrocatalysts containing different multiple transition metal centres could be made possible.
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Affiliation(s)
- Xiang Li
- Department of Chemistry, University of Oxford Oxford OX1 3QR UK
| | | | - Ping-Luen Ho
- Department of Chemistry, University of Oxford Oxford OX1 3QR UK
| | - Chunbo Jia
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200438 China
| | - Jining Shang
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200438 China
| | | | - Xuelei Pan
- Department of Chemistry, University of Oxford Oxford OX1 3QR UK
| | - Yiyang Li
- Department of Chemistry, University of Oxford Oxford OX1 3QR UK
| | - Guangchao Li
- Department of Chemistry, University of Oxford Oxford OX1 3QR UK
| | - Tai-Sing Wu
- National Synchrotron Radiation Research Center 101 Hsin-Ann Road Hsinchu 30076 Taiwan
| | - Yun-Liang Soo
- National Synchrotron Radiation Research Center 101 Hsin-Ann Road Hsinchu 30076 Taiwan
| | - Heyong He
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200438 China
| | - Bin Yue
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200438 China
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2
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Li YY, Liao RZ. Exploring the Cooperation of the Redox Non-Innocent Ligand and Di-Cobalt Center for the Water Oxidation Reaction Catalyzed by a Binuclear Complex. CHEMSUSCHEM 2024:e202400123. [PMID: 38664234 DOI: 10.1002/cssc.202400123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 04/24/2024] [Indexed: 05/25/2024]
Abstract
Water oxidation is a crucial reaction in the artificial photosynthesis system. In the present work, density functional calculations were employed to decipher the mechanism of water oxidation catalyzed by a binuclear cobalt complex, which was disclosed to be a homogeneous water oxidation catalyst in pH=7 phosphate buffer. The calculations showed that the catalytic cycle starts from the CoIII,III-OH2 species. Then, a proton-coupled electron transfer followed by a one-electron transfer process leads to the generation of the formal CoIV,IV-OH intermediate. The subsequent PCET produces the active species, namely the formal CoIV,V=O intermediate (4). The oxidation processes mainly occur on the ligand moiety, including the coordinated water moiety, implying a redox non-innocent behavior. Two cobalt centers keep their oxidation states and provide one catalytic center for water activation during the oxidation process. 4 triggers the O-O bond formation via the water nucleophilic attack pathway, in which the phosphate buffer ion functions as the proton acceptor. The O-O bond formation is the rate-limiting step with a calculated total barrier of 17.7 kcal/mol. The last electron oxidation process coupled with an intramolecular electron transfer results in the generation of O2.
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Affiliation(s)
- Ying-Ying Li
- School of Chemistry and Chemical Engineering, Zhengzhou Normal University, Zhengzhou, 450044, P. R. China
| | - Rong-Zhen Liao
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
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3
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Ahmad W, Ahmad N, Wang K, Aftab S, Hou Y, Wan Z, Yan B, Pan Z, Gao H, Peung C, Junke Y, Liang C, Lu Z, Yan W, Ling M. Electron-Sponge Nature of Polyoxometalates for Next-Generation Electrocatalytic Water Splitting and Nonvolatile Neuromorphic Devices. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2304120. [PMID: 38030565 PMCID: PMC10837383 DOI: 10.1002/advs.202304120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 09/23/2023] [Indexed: 12/01/2023]
Abstract
Designing next-generation molecular devices typically necessitates plentiful oxygen-bearing sites to facilitate multiple-electron transfers. However, the theoretical limits of existing materials for energy conversion and information storage devices make it inevitable to hunt for new competitors. Polyoxometalates (POMs), a unique class of metal-oxide clusters, have been investigated exponentially due to their structural diversity and tunable redox properties. POMs behave as electron-sponges owing to their intrinsic ability of reversible uptake-release of multiple electrons. In this review, numerous POM-frameworks together with desired features of a contender material and inherited properties of POMs are systematically discussed to demonstrate how and why the electron-sponge-like nature of POMs is beneficial to design next-generation water oxidation/reduction electrocatalysts, and neuromorphic nonvolatile resistance-switching random-access memory devices. The aim is to converge the attention of scientists who are working separately on electrocatalysts and memory devices, on a point that, although the application types are different, they all hunt for a material that could exhibit electron-sponge-like feature to realize boosted performances and thus, encouraging the scientists of two completely different fields to explore POMs as imperious contenders to design next-generation nanodevices. Finally, challenges and promising prospects in this research field are also highlighted.
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Affiliation(s)
- Waqar Ahmad
- Division of New Energy MaterialsInstitute of Zhejiang University‐QuzhouQuzhou324000China
- College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310058China
| | - Nisar Ahmad
- School of MicroelectronicsUniversity of Science and Technology of ChinaHefei230026China
| | - Kun Wang
- Division of New Energy MaterialsInstitute of Zhejiang University‐QuzhouQuzhou324000China
- College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310058China
| | - Sumaira Aftab
- CAS Key Laboratory of Mechanical Behavior and Design of MaterialsDepartment of Modern MechanicsCAS Center for Excellence in Complex System MechanicsUniversity of Science and Technology of ChinaHefei230027China
| | - Yunpeng Hou
- Division of New Energy MaterialsInstitute of Zhejiang University‐QuzhouQuzhou324000China
- College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310058China
| | - Zhengwei Wan
- Division of New Energy MaterialsInstitute of Zhejiang University‐QuzhouQuzhou324000China
- College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310058China
| | - Bei‐Bei Yan
- CAS Key Laboratory of Mechanical Behavior and Design of MaterialsDepartment of Modern MechanicsCAS Center for Excellence in Complex System MechanicsUniversity of Science and Technology of ChinaHefei230027China
| | - Zhao Pan
- CAS Key Laboratory of Mechanical Behavior and Design of MaterialsDepartment of Modern MechanicsCAS Center for Excellence in Complex System MechanicsUniversity of Science and Technology of ChinaHefei230027China
| | - Huai‐Ling Gao
- CAS Key Laboratory of Mechanical Behavior and Design of MaterialsDepartment of Modern MechanicsCAS Center for Excellence in Complex System MechanicsUniversity of Science and Technology of ChinaHefei230027China
| | - Chen Peung
- Division of New Energy MaterialsInstitute of Zhejiang University‐QuzhouQuzhou324000China
| | - Yang Junke
- Division of New Energy MaterialsInstitute of Zhejiang University‐QuzhouQuzhou324000China
| | - Chengdu Liang
- Division of New Energy MaterialsInstitute of Zhejiang University‐QuzhouQuzhou324000China
- College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310058China
| | - Zhihui Lu
- Division of New Energy MaterialsInstitute of Zhejiang University‐QuzhouQuzhou324000China
- College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310058China
| | - Wenjun Yan
- School of AutomationHangzhou Dianzi UniversityHangzhou310018China
| | - Min Ling
- Division of New Energy MaterialsInstitute of Zhejiang University‐QuzhouQuzhou324000China
- College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310058China
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4
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Su X, Li S, Yan L. N-H Bond Activation Catalyzed by an Anderson-Type Polyoxometalate-Based Compound: Key Role of Transition-Metal Heteroatom. Inorg Chem 2023; 62:15673-15679. [PMID: 37708077 DOI: 10.1021/acs.inorgchem.3c02462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
Polyoxometalates (POMs) have a broad array of applied platforms with well-characterized catalysis to achieve N-H bond activation. Herein, the mechanism of the Anderson-type POM-based catalyst [FeIIIMoVI6O18{(OCH2)3CNH2}2]3- ([TrisFeIIIMoVI6O18]3-, Tris = {(OCH2)3CNH2}2) for the N-H bond activation of hydrazine (PhHNNHPh) was investigated by density functional theory calculations. The results reveal that [TrisFeIIIMoVI6O18]3- as the active species is responsible for the continuous abstraction of two electrons and two protons of PhHNNHPh via a proton-coupled electron transfer pathway, resulting in the activation of two N-H bonds in PhHNNHPh and thus the product PhNNPh. H2O2 acts as an oxidant to regulate catalyst regeneration. Based on the proposed catalytic mechanism, the key role of the heteroatom FeIII in [TrisFeIIIMoVI6O18]3- was disclosed. The d-orbital of FeIII in [TrisFeIIIMoVI6O18]3- acts as an electron receptor to promote the electron transfer (ET) in the rate-determining step (RDS) of the catalytic cycle. The substitution of the heteroatom FeIII of [TrisFeIIIMoVI6O18]3- with CoIII, RuIII, or MnIII is expected to improve the catalytic activity for several reasons: (i) the unoccupied molecular orbitals of POM-based compounds containing CoIII or RuIII are low, which is beneficial for the ET of RDS; (ii) For N-H bond activation catalyzed by the MnIII-containing POM-based compound, the transition state of RDS is stable because the d-orbital of its active site is half-filled, which results in a low free-energy barrier.
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Affiliation(s)
- Xiaofang Su
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, P. R. China
| | - Shujun Li
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, Henan, P. R. China
| | - Likai Yan
- Key Laboratory of Polyoxometalate Science of Ministry of Education, Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130018, P. R. China
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5
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Schwiedrzik L, Rajkovic T, González L. Regeneration and Degradation in a Biomimetic Polyoxometalate Water Oxidation Catalyst. ACS Catal 2023; 13:3007-3019. [PMID: 36910868 PMCID: PMC9990072 DOI: 10.1021/acscatal.2c06301] [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: 12/21/2022] [Revised: 01/30/2023] [Indexed: 02/16/2023]
Abstract
Complete understanding of catalytic cycles is required to advance the design of water oxidation catalysts, but it is difficult to attain, due to the complex factors governing their reactivity and stability. In this study, we investigate the regeneration and degradation pathways of the highly active biomimetic water oxidation catalyst [Mn3+ 2Mn4+ 2V4O17(OAc)3]3-, thereby completing its catalytic cycle. Beginning with the deactivated species [Mn3+ 4V4O17(OAc)2]4- left over after O2 evolution, we scrutinize a network of reaction intermediates belonging to two alternative water oxidation cycles. We find that catalyst regeneration to the activated species [Mn4+ 4V4O17(OAc)2(OH)(H2O)]- proceeds via oxidation of each Mn center, with one water ligand being bound during the first oxidation step and a second water ligand being bound and deprotonated during the final oxidation step. ΔΔG values for this last oxidation are consistent with previous experimental results, while regeneration within an alternative catalytic cycle was found to be thermodynamically unfavorable. Extensive in silico sampling of catalyst structures also revealed two degradation processes: cubane opening and ligand dissociation, both of which have low barriers at highly reduced states of the catalyst due to the presence of Jahn-Teller effects. These mechanistic insights are expected to spur the development of more efficient and stable Mn cubane water oxidation catalysts.
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Affiliation(s)
- Ludwig Schwiedrzik
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Straße 17, 1090 Vienna, Austria.,Vienna Doctoral School in Chemistry (DoSChem), University of Vienna, Währinger Str. 42, 1090 Vienna, Austria
| | - Tina Rajkovic
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Straße 17, 1090 Vienna, Austria
| | - Leticia González
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Straße 17, 1090 Vienna, Austria
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6
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Taira N, Yamauchi K, Sakai K. Intracluster O–O Coupling Pathway Evidenced for an Anderson-Type Single-Cobalt Polymolybdate Water Oxidation Catalyst. ACS Catal 2023. [DOI: 10.1021/acscatal.2c05925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Affiliation(s)
- Natsuki Taira
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kosei Yamauchi
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Ken Sakai
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
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7
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Volchek VV, Kompankov NB, Sokolov MN, Abramov PA. Proton Affinity in the Chemistry of Beta-Octamolybdate: HPLC-ICP-AES, NMR and Structural Studies. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238368. [PMID: 36500457 PMCID: PMC9738851 DOI: 10.3390/molecules27238368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 11/23/2022] [Accepted: 11/25/2022] [Indexed: 12/05/2022]
Abstract
The affinity of [β-Mo8O26]4- toward different proton sources has been studied in various conditions. The proposed sites for proton coordination were highlighted with single crystal X-ray diffraction (SCXRD) analysis of (Bu4N)3[β-{Ag(py-NH2)Mo8O26]}] (1) and from analysis of reported structures. Structural rearrangement of [β-Mo8O26]4- as a direct response to protonation was studied in solution with 95Mo NMR and HPLC-ICP-AES techniques. A new type of proton transfer reaction between (Bu4N)4[β-Mo8O26] and (Bu4N)4H2[V10O28] in DMSO results in both polyoxometalates transformation into [V2Mo4O19]4-, which was confirmed by the 95Mo, 51V NMR and HPLC-ICP-AES techniques. The same type of reaction with [H4SiW12O40] in DMSO leads to metal redistribution with formation of [W2Mo4O19]2-.
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Affiliation(s)
- Victoria V. Volchek
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Akad. Lavrentiev Ave., 630090 Novosibirsk, Russia
| | - Nikolay B. Kompankov
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Akad. Lavrentiev Ave., 630090 Novosibirsk, Russia
| | - Maxim N. Sokolov
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Akad. Lavrentiev Ave., 630090 Novosibirsk, Russia
| | - Pavel A. Abramov
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Akad. Lavrentiev Ave., 630090 Novosibirsk, Russia
- Institute of Natural Sciences and Mathematics, Ural Federal University Named after B.N. Yeltsin, 620075 Ekaterinburg, Russia
- Correspondence:
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8
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Zhang G, Wang F, Tubul T, Baranov M, Leffler N, Neyman A, Poblet JM, Weinstock IA. Complexed Semiconductor Cores Activate Hexaniobate Ligands as Nucleophilic Sites for Solar‐Light Reduction of CO
2
by Water. Angew Chem Int Ed Engl 2022; 61:e202213162. [PMID: 36200676 PMCID: PMC10098893 DOI: 10.1002/anie.202213162] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Indexed: 11/06/2022]
Abstract
Although pure and functionalized solid-state polyniobates such as layered perovskites and niobate nanosheets are photocatalysts for renewable-energy processes, analogous reactions by molecular polyoxoniobate cluster-anions are nearly absent from the literature. We now report that under simulated solar light, hexaniobate cluster-anion encapsulated 30-NiII -ion "fragments" of surface-protonated cubic-phase-like NiO cores activate the hexaniobate ligands towards CO2 reduction by water. Photoexcitation of the NiO cores promotes charge-transfer reduction of NbV to NbIV , increasing electron density at bridging oxo atoms of Nb-μ-O-Nb linkages that bind and convert CO2 to CO. Photogenerated NiO "holes" simultaneously oxidize water to dioxygen. The findings point to molecular complexation of suitable semiconductor "fragments" as a general method for utilizing electron-dense polyoxoniobate anions as nucleophilic photocatalysts for solar-light driven activation and reduction of small molecules.
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Affiliation(s)
- Guanyun Zhang
- Department of Chemistry and the Ilse Katz Institute for Nanoscale Science & TechnologyBen-Gurion University of the NegevBeer Sheva84105Israel
- Key Lab for Colloid and Interface Science of Ministry of EducationSchool of Chemistry and Chemical EngineeringShandong UniversityJinan250100China
| | - Fei Wang
- Departament de Química Física i InorgànicaUniversitat Rovira i Virgili43007TarragonaSpain
| | - Tal Tubul
- Department of Chemistry and the Ilse Katz Institute for Nanoscale Science & TechnologyBen-Gurion University of the NegevBeer Sheva84105Israel
| | - Mark Baranov
- Department of Chemistry and the Ilse Katz Institute for Nanoscale Science & TechnologyBen-Gurion University of the NegevBeer Sheva84105Israel
| | - Nitai Leffler
- Department of Chemistry and the Ilse Katz Institute for Nanoscale Science & TechnologyBen-Gurion University of the NegevBeer Sheva84105Israel
| | - Alevtina Neyman
- Department of Chemistry and the Ilse Katz Institute for Nanoscale Science & TechnologyBen-Gurion University of the NegevBeer Sheva84105Israel
| | - Josep M. Poblet
- Departament de Química Física i InorgànicaUniversitat Rovira i Virgili43007TarragonaSpain
| | - Ira A. Weinstock
- Department of Chemistry and the Ilse Katz Institute for Nanoscale Science & TechnologyBen-Gurion University of the NegevBeer Sheva84105Israel
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9
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Surface Reconstruction of Cobalt-Based Polyoxometalate and CNT Fiber Composite for Efficient Oxygen Evolution Reaction. Catalysts 2022. [DOI: 10.3390/catal12101242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Polyoxometalates (POMs), as carbon-free metal-oxo-clusters with unique structural properties, are emerging water-splitting electrocatalysts. Herein, we explore the development of cobalt-containing polyoxometalate immobilized over the carbon nanotube fiber (CNTF) (Co4POM@CNTF) towards efficient electrochemical oxygen evolution reaction (OER). CNTF serves as an excellent electron mediator and highly conductive support, while the self-activation of the part of Co4POM through restructuring in basic media generates cobalt oxides and/or hydroxides that serve as catalytic sites for OER. A modified electrode fabricated through the drop-casting method followed by thermal treatment showed higher OER activity and enhanced stability in alkaline media. Furthermore, advanced physical characterization and electrochemical results demonstrate efficient charge transfer kinetics and high OER performance in terms of low overpotential, small Tafel slope, and good stability over an extended reaction time. The significantly high activity and stability achieved can be ascribed to the efficient electron transfer and highly electrochemically active surface area (ECSA) of the self-activated electrocatalyst immobilized over the highly conductive CNTF. This research is expected to pave the way for developing POM-based electrocatalysts for oxygen electrocatalysis.
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10
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Li M, Liao RZ. Water Oxidation Catalyzed by a Bioinspired Tetranuclear Manganese Complex: Mechanistic Study and Prediction. CHEMSUSCHEM 2022; 15:e202200187. [PMID: 35610183 DOI: 10.1002/cssc.202200187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 05/23/2022] [Indexed: 06/15/2023]
Abstract
Density functional theory calculations were utilized to elucidate the water oxidation mechanism catalyzed by polyanionic tetramanganese complex a [MnIII 3 MnIV O3 (CH3 COO)3 (A-α-SiW9 O34 )]6- . Theoretical results indicated that catalytic active species 1 (Mn4 III,III,IV,IV ) was formed after O2 formation in the first turnover. From 1, three sequential proton-coupled electron transfer (PCET) oxidations led to the MnIV -oxyl radical 4 (Mn4 IV,IV,IV,IV -O⋅). Importantly, 4 had an unusual butterfly-shaped Mn2 O2 core for the two substrate-coordinated Mn sites, which facilitated O-O bond formation via direct coupling of the oxyl radical and the adjacent MnIV -coordinated hydroxide to produce the hydroperoxide intermediate Int1 (Mn4 III,IV,IV,IV -OOH). This step had an overall energy barrier of 24.9 kcal mol-1 . Subsequent PCET oxidation of Int1 to Int2 (Mn4 III,IV,IV,IV -O2 ⋅) enabled the O2 release in a facile process. Furthermore, apart from the Si-centered complex, computational study suggested that tetramanganese polyoxometalates with Ge, P, and S could also catalyze the water oxidation process, where those bearing P and S likely present higher activities.
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Affiliation(s)
- Man Li
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Rong-Zhen Liao
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
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11
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Synergetic Effects of Mixed-Metal Polyoxometalates@Carbon-Based Composites as Electrocatalysts for the Oxygen Reduction and the Oxygen Evolution Reactions. Catalysts 2022. [DOI: 10.3390/catal12040440] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The smart choice of polyoxometalates (POMs) and the design of POM@carbon-based composites are promising tools for producing active electrocatalysts for both the oxygen reduction (ORR) and the oxygen evolution reactions (OER). Hence, herein, we report the preparation, characterization and application of three composites based on doped, multi-walled carbon nanotubes (MWCNT_N6) and three different POMs (Na12[(FeOH2)2Fe2(As2W15O56)2]·54H2O, Na12[(NiOH2)2Ni2(As2W15O56)2]·54H2O and Na14[(FeOH2)2Ni2(As2W15O56)2]·55H2O) as ORR and OER electrocatalysts in alkaline medium (pH = 13). Overall, the three POM@MWCNT_N6 composites showed good ORR performance with onset potentials between 0.80 and 0.81 V vs. RHE and diffusion-limiting current densities ranging from −3.19 to −3.66 mA cm−2. Fe4@MWCNT_N6 and Fe2Ni2@MWCNT_N6 also showed good stability after 12 h (84% and 80% of initial current). The number of electrons transferred per O2 molecule was close to three, suggesting a mixed regime. Moreover, the Fe2Ni2@MWCNT_N6 presented remarkable OER performance with an overpotential of 0.36 V vs. RHE (for j = 10 mA cm−2), a jmax close to 135 mA cm−2 and fast kinetics with a Tafel slope of 45 mV dec−1. More importantly, this electrocatalyst outperformed not only most POM@carbon-based composites reported so far but also the state-of-the-art RuO2 electrocatalyst. Thus, this work represents a step forward towards bifunctional electrocatalysts using less expensive materials.
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12
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Cobalt Phosphotungstate-Based Composites as Bifunctional
Electrocatalysts for Oxygen Reactions. Catalysts 2022. [DOI: 10.3390/catal12040357] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are key reactions in energy-converting systems, such as fuel cells (FCs) and water-splitting (WS) devices. However, the current use of expensive Pt-based electrocatalysts for ORR and IrO2 and RuO2 for OER is still a major drawback for the economic viability of these clean energy technologies. Thus, there is an incessant search for low-cost and efficient electrocatalysts (ECs). Hence, herein, we report the preparation, characterization (Raman, XPS, and SEM), and application of four composites based on doped-carbon materials (CM) and cobalt phosphotungstate (MWCNT_N8_Co4, GF_N8_Co4, GF_ND8_Co4, and GF_NS8_Co4) as ORR and OER electrocatalysts in alkaline medium (pH = 13). Structural characterization confirmed the successful carbon materials doping with N and/or N, S, and the incorporation of the cobalt phosphotungstate. Overall, all composites showed good ORR performance with onset potentials ranging from 0.83 to 0.85 V vs. RHE, excellent tolerance to methanol crossover with current retentions between 88 and 90%, and good stability after 20,000 s at E = 0.55 V vs. RHE (73% to 82% of initial current). In addition, the number of electrons transferred per O2 molecule was close to four, suggesting selectivity to the direct process. Moreover, these composites also presented excellent OER performance with GF_N8_Co4 showing an overpotential of 0.34 V vs. RHE (for j = 10 mA cm−2) and jmax close to 70 mA cm−2. More importantly, this electrocatalyst outperformed state-of-the-art IrO2 electrocatalyst. Thus, this work represents a step forward toward bifunctional electrocatalysts using less expensive materials.
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13
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Benseghir Y, Solé-Daura A, Mialane P, Marrot J, Dalecky L, Béchu S, Frégnaux M, Gomez-Mingot M, Fontecave M, Mellot-Draznieks C, Dolbecq A. Understanding the Photocatalytic Reduction of CO2 with Heterometallic Molybdenum(V) Phosphate Polyoxometalates in Aqueous Media. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04530] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Youven Benseghir
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000 Versailles, France
- Laboratoire de Chimie des Processus Biologiques, UMR CNRS 8229, Collège de France, Sorbonne Université, PSL Research University, 75231 Paris Cedex 05, France
| | - Albert Solé-Daura
- Laboratoire de Chimie des Processus Biologiques, UMR CNRS 8229, Collège de France, Sorbonne Université, PSL Research University, 75231 Paris Cedex 05, France
| | - Pierre Mialane
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000 Versailles, France
| | - Jérôme Marrot
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000 Versailles, France
| | - Lauren Dalecky
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000 Versailles, France
| | - Solène Béchu
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000 Versailles, France
| | - Mathieu Frégnaux
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000 Versailles, France
| | - Maria Gomez-Mingot
- Laboratoire de Chimie des Processus Biologiques, UMR CNRS 8229, Collège de France, Sorbonne Université, PSL Research University, 75231 Paris Cedex 05, France
| | - Marc Fontecave
- Laboratoire de Chimie des Processus Biologiques, UMR CNRS 8229, Collège de France, Sorbonne Université, PSL Research University, 75231 Paris Cedex 05, France
| | - Caroline Mellot-Draznieks
- Laboratoire de Chimie des Processus Biologiques, UMR CNRS 8229, Collège de France, Sorbonne Université, PSL Research University, 75231 Paris Cedex 05, France
| | - Anne Dolbecq
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000 Versailles, France
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14
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Schwiedrzik L, Brieskorn V, González L. Flexibility Enhances Reactivity: Redox Isomerism and Jahn-Teller Effects in a Bioinspired Mn 4O 4 Cubane Water Oxidation Catalyst. ACS Catal 2021; 11:13320-13329. [PMID: 34777908 PMCID: PMC8576808 DOI: 10.1021/acscatal.1c03566] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 09/28/2021] [Indexed: 12/25/2022]
Abstract
Understanding how water oxidation to molecular oxygen proceeds in molecular metal-oxo catalysts is a challenging endeavor due to their structural complexity. In this report, we unravel the water oxidation mechanism of the highly active water oxidation catalyst [Mn4V4O17(OAc)3]3-, a polyoxometalate catalyst with a [Mn4O4]6+ cubane core reminiscent of the natural oxygen-evolving complex. Starting from the activated species [Mn4 4+V4O17(OAc)2(H2O)(OH)]1-, we scrutinized multiple pathways to find that water oxidation proceeds via a sequential proton-coupled electron transfer (PCET), O-O bond formation, another PCET, an intramolecular electron transfer, and another PCET resulting in O2 evolution, with a predicted thermodynamic overpotential of 0.71 V. An in-depth investigation of the O-O bond formation process revealed an essential interplay between redox isomerism and Jahn-Teller effects, responsible for enhancing reactivity in the catalytic cycle. This is achieved by redistributing electrons between metal centers and weakening relevant bonds through Jahn-Teller distortions, introducing flexibility to the otherwise rigid cubane core of the catalyst. These mechanistic insights are expected to advance the design of efficient bioinspired Mn cubane water-splitting catalysts.
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Affiliation(s)
- Ludwig Schwiedrzik
- Institute of Theoretical
Chemistry, Faculty of Chemistry, University
of Vienna, Währinger Straße 17, 1090 Vienna, Austria
| | - Vera Brieskorn
- Institute of Theoretical
Chemistry, Faculty of Chemistry, University
of Vienna, Währinger Straße 17, 1090 Vienna, Austria
| | - Leticia González
- Institute of Theoretical
Chemistry, Faculty of Chemistry, University
of Vienna, Währinger Straße 17, 1090 Vienna, Austria
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15
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Cárdenas G, Trentin I, Schwiedrzik L, Hernández-Castillo D, Lowe GA, Kund J, Kranz C, Klingler S, Stach R, Mizaikoff B, Marquetand P, Nogueira JJ, Streb C, González L. Activation by oxidation and ligand exchange in a molecular manganese vanadium oxide water oxidation catalyst. Chem Sci 2021; 12:12918-12927. [PMID: 34745522 PMCID: PMC8513927 DOI: 10.1039/d1sc03239a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 08/30/2021] [Indexed: 11/21/2022] Open
Abstract
Despite their technological importance for water splitting, the reaction mechanisms of most water oxidation catalysts (WOCs) are poorly understood. This paper combines theoretical and experimental methods to reveal mechanistic insights into the reactivity of the highly active molecular manganese vanadium oxide WOC [Mn4V4O17(OAc)3]3- in aqueous acetonitrile solutions. Using density functional theory together with electrochemistry and IR-spectroscopy, we propose a sequential three-step activation mechanism including a one-electron oxidation of the catalyst from [Mn2 3+Mn2 4+] to [Mn3+Mn3 4+], acetate-to-water ligand exchange, and a second one-electron oxidation from [Mn3+Mn3 4+] to [Mn4 4+]. Analysis of several plausible ligand exchange pathways shows that nucleophilic attack of water molecules along the Jahn-Teller axis of the Mn3+ centers leads to significantly lower activation barriers compared with attack at Mn4+ centers. Deprotonation of one water ligand by the leaving acetate group leads to the formation of the activated species [Mn4V4O17(OAc)2(H2O)(OH)]- featuring one H2O and one OH ligand. Redox potentials based on the computed intermediates are in excellent agreement with electrochemical measurements at various solvent compositions. This intricate interplay between redox chemistry and ligand exchange controls the formation of the catalytically active species. These results provide key reactivity information essential to further study bio-inspired molecular WOCs and solid-state manganese oxide catalysts.
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Affiliation(s)
- Gustavo Cárdenas
- Institute of Theoretical Chemistry, University of Vienna Währinger Str. 17 1090 Vienna Austria
- Chemistry Department, Universidad Autónoma de Madrid Calle Francisco Tomás y Valiente, 7 28049 Madrid Spain
| | - Ivan Trentin
- Institute of Inorganic Chemistry I, Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Ludwig Schwiedrzik
- Institute of Theoretical Chemistry, University of Vienna Währinger Str. 17 1090 Vienna Austria
| | | | - Grace A Lowe
- Institute of Inorganic Chemistry I, Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Julian Kund
- Institute of Analytical and Bioanalytical Chemistry, Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Christine Kranz
- Institute of Analytical and Bioanalytical Chemistry, Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Sarah Klingler
- Institute of Analytical and Bioanalytical Chemistry, Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Robert Stach
- Institute of Analytical and Bioanalytical Chemistry, Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Boris Mizaikoff
- Institute of Analytical and Bioanalytical Chemistry, Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Philipp Marquetand
- Institute of Theoretical Chemistry, University of Vienna Währinger Str. 17 1090 Vienna Austria
- IADCHEM, Institute for Advanced Research in Chemistry, Universidad Autónoma de Madrid Madrid Spain
| | - Juan J Nogueira
- Chemistry Department, Universidad Autónoma de Madrid Calle Francisco Tomás y Valiente, 7 28049 Madrid Spain
- IADCHEM, Institute for Advanced Research in Chemistry, Universidad Autónoma de Madrid Madrid Spain
| | - Carsten Streb
- Institute of Inorganic Chemistry I, Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Leticia González
- Institute of Theoretical Chemistry, University of Vienna Währinger Str. 17 1090 Vienna Austria
- Vienna Research Platform on Accelerating Reaction Discovery, University of Vienna Währinger Str. 17 1090 Vienna Austria
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16
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Azmani K, Besora M, Soriano-López J, Landolsi M, Teillout AL, de Oliveira P, Mbomekallé IM, Poblet JM, Galán-Mascarós JR. Understanding polyoxometalates as water oxidation catalysts through iron vs. cobalt reactivity. Chem Sci 2021; 12:8755-8766. [PMID: 34257875 PMCID: PMC8246111 DOI: 10.1039/d1sc01016f] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 05/13/2021] [Indexed: 01/08/2023] Open
Abstract
Cobalt polyoxometalates (Co-POMs) have emerged as promising water oxidation catalysts (WOCs), with the added advantage of their molecular nature despite being metal oxide fragments. In comparison with metal oxides, that do not offer well-defined active surfaces, POMs have a controlled, discrete structure that allows for precise correlations between experiment and computational analyses. Thus, beyond highly active WOCs, POMs are also model systems to gain deeper mechanistic understanding on the oxygen evolution reaction (OER). The tetracobalt Weakley sandwich [CoII 4(H2O)2(B-α-PW9O34)2]10- (Co4-WS) has been one of the most extensively studied. We have compared its activity with that of the iron analog [FeIII 4(H2O)2(B-α-PW9O34)2]6- (Fe4-WS) looking for the electronic effects determining their activity. Furthermore, the effect of POM nuclearity was also investigated by comparison with the iron- and cobalt-monosubstituted Keggin clusters. Electrocatalytic experiments employing solid state electrodes containing the POMs and the corresponding computational calculations demonstrate that CoII-POMs display better WOC activity than the FeIII derivatives. Moreover, the activity of POMs is less influenced by their nuclearity, thus Weakley sandwich moieties show slightly improved WOC characteristics than Keggin clusters. In good agreement with the experimental data, computational methods, including pK a values, confirm that the resting state for Fe-POMs in neutral media corresponds to the S1 (FeIII-OH) species. Overall, the proposed reaction mechanism for Fe4-WS is analogous to that found for Co4-WS, despite their electronic differences. The potential limiting step is a proton-coupled electron transfer event yielding the active S2 (FeIV[double bond, length as m-dash]O) species, which receives a water nucleophilic attack to form the O-O bond. The latter has activation energies slightly higher than those computed for the Co-POMs, in good agreement with experimental observations. These results provide new insights for the accurate understanding of the structure-reactivity relationships of polyoxometalates in particular, and or metal oxides in general, which are of utmost importance for the development of new bottom-up synthetic approaches to design efficient, robust and non-expensive earth-abundant water oxidation catalysts.
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Affiliation(s)
- Khalid Azmani
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST) Av. Països Catalans, 16 Tarragona E-43007 Spain
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili Marcel·lí Domingo 1 E-43007 Tarragona Spain
| | - Maria Besora
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili Marcel·lí Domingo 1 E-43007 Tarragona Spain
| | - Joaquín Soriano-López
- School of Chemistry & AMBER Center, Trinity College, University of Dublin Dublin D02 PN40 Ireland
| | - Meriem Landolsi
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili Marcel·lí Domingo 1 E-43007 Tarragona Spain
| | - Anne-Lucie Teillout
- Equipe d'Electrochimie et de Photo-électrochimie, Institut de Chimie Physique, UMR 8000, CNRS, Université Paris Saclay Orsay F-91405 France
| | - Pedro de Oliveira
- Equipe d'Electrochimie et de Photo-électrochimie, Institut de Chimie Physique, UMR 8000, CNRS, Université Paris Saclay Orsay F-91405 France
| | - Israël-Martyr Mbomekallé
- Equipe d'Electrochimie et de Photo-électrochimie, Institut de Chimie Physique, UMR 8000, CNRS, Université Paris Saclay Orsay F-91405 France
| | - Josep M Poblet
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili Marcel·lí Domingo 1 E-43007 Tarragona Spain
| | - José-Ramón Galán-Mascarós
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST) Av. Països Catalans, 16 Tarragona E-43007 Spain
- ICREA, Pg. Lluís Companys 23 08010 Barcelona Spain
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17
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Whelan É, Steuber FW, Gunnlaugsson T, Schmitt W. Tuning photoactive metal–organic frameworks for luminescence and photocatalytic applications. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213757] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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18
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Puente Santiago AR, Sanad MF, Moreno-Vicente A, Ahsan MA, Cerón MR, Yao YR, Sreenivasan ST, Rodriguez-Fortea A, Poblet JM, Echegoyen L. A New Class of Molecular Electrocatalysts for Hydrogen Evolution: Catalytic Activity of M 3N@C 2n (2 n = 68, 78, and 80) Fullerenes. J Am Chem Soc 2021; 143:6037-6042. [PMID: 33821637 DOI: 10.1021/jacs.0c13002] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The electrocatalytic properties of some endohedral fullerenes for hydrogen evolution reactions (HER) were recently predicted by DFT calculations. Nonetheless, the experimental catalytic performance under realistic electrochemical environments of these 0D-nanomaterials have not been explored. Here, for the first time, we disclose the HER electrocatalytic behavior of seven M3N@2n (2n = 68, 78, and 80) fullerenes (Gd3N@Ih(7)-C80, Y3N@Ih(7)-C80, Lu3N@Ih(7)-C80, Sc3N@Ih(7)-C80, Sc3N@D5h(6)-C80, Sc3N@D3h(5)-C78, and Sc3N@D3(6140)-C68) using a combination of experimental and theoretical techniques. The non-IPR Sc3N@D3(6140)-C68 compound exhibited the best catalytic performance toward the generation of molecular hydrogen, exhibiting an onset potential of -38 mV vs RHE, a very high mass activity of 1.75 A·mg-1 at -0.4 V vs RHE, and an excellent electrochemical stability, retaining 96% of the initial current after 24 h. The superior performance was explained on the basis of the fused pentagon rings, which represent a new and promising HER catalytic motif.
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Affiliation(s)
- Alain R Puente Santiago
- Department of Chemistry, University of Texas at El Paso, 500 West University Avenue, El Paso, Texas 79968, United States
| | - Mohamed Fathi Sanad
- Department of Chemistry, University of Texas at El Paso, 500 West University Avenue, El Paso, Texas 79968, United States.,Department of Environmental Sciences and Engineering, University of Texas at El Paso, 500 West University Avenue, El Paso, Texas 79968, United States
| | - Antonio Moreno-Vicente
- Departmento de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcellí Domingo 1, 43007 Tarragona, Spain
| | - Md Ariful Ahsan
- Department of Chemistry, University of Texas at El Paso, 500 West University Avenue, El Paso, Texas 79968, United States
| | - Maira R Cerón
- Lawrence Livermore National Laboratory 7000 East Ave, Livermore, California 94550, United States
| | - Yang-Rong Yao
- Department of Chemistry, University of Texas at El Paso, 500 West University Avenue, El Paso, Texas 79968, United States
| | - Sreeprasad T Sreenivasan
- Department of Chemistry, University of Texas at El Paso, 500 West University Avenue, El Paso, Texas 79968, United States
| | - Antonio Rodriguez-Fortea
- Departmento de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcellí Domingo 1, 43007 Tarragona, Spain
| | - Josep M Poblet
- Departmento de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcellí Domingo 1, 43007 Tarragona, Spain
| | - Luis Echegoyen
- Department of Chemistry, University of Texas at El Paso, 500 West University Avenue, El Paso, Texas 79968, United States
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19
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A Force Field for a Manganese-Vanadium Water Oxidation Catalyst: Redox Potentials in Solution as Showcase. Catalysts 2021. [DOI: 10.3390/catal11040493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
We present a molecular mechanics force field in AMBER format for the mixed-valence manganese vanadium oxide cluster [Mn4V4O17(OAc)3]3−—a synthetic analogue of the oxygen-evolving complex that catalyzes the water oxidation reaction in photosystem II—with parameter sets for two different oxidation states. Most force field parameters involving metal atoms have been newly parametrized and the harmonic terms refined using hybrid quantum mechanics/molecular mechanics reference simulations, although some parameters were adapted from pre-existing force fields of vanadate cages and manganese oxo dimers. The characteristic Jahn–Teller distortions of d4 MnIII ions in octahedral environments are recovered by the force field. As an application, the developed parameters have been used to calculate the redox potential of the [MnIIIMn3IV] ⇌ [Mn4IV]+e− half-reaction in acetonitrile by means of Marcus theory.
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20
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Li J, Triana CA, Wan W, Adiyeri Saseendran DP, Zhao Y, Balaghi SE, Heidari S, Patzke GR. Molecular and heterogeneous water oxidation catalysts: recent progress and joint perspectives. Chem Soc Rev 2021; 50:2444-2485. [DOI: 10.1039/d0cs00978d] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The recent synthetic and mechanistic progress in molecular and heterogeneous water oxidation catalysts highlights the new, overarching strategies for knowledge transfer and unifying design concepts.
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Affiliation(s)
- J. Li
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - C. A. Triana
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - W. Wan
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | | | - Y. Zhao
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - S. E. Balaghi
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - S. Heidari
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - G. R. Patzke
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
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21
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Craig MJ, Barda-Chatain R, García-Melchor M. Fundamental insights and rational design of low-cost polyoxometalates for the oxygen evolution reaction. J Catal 2021. [DOI: 10.1016/j.jcat.2020.11.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Gutiérrez-Tarriño S, Olloqui-Sariego JL, Calvente JJ, Espallargas GM, Rey F, Corma A, Oña-Burgos P. Cobalt Metal-Organic Framework Based on Layered Double Nanosheets for Enhanced Electrocatalytic Water Oxidation in Neutral Media. J Am Chem Soc 2020; 142:19198-19208. [PMID: 33125226 DOI: 10.1021/jacs.0c08882] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A new cobalt metal-organic framework (2D-Co-MOF) based on well-defined layered double cores that are strongly connected by intermolecular bonds has been developed. Its 3D structure is held together by π-π stacking interactions between the labile pyridine ligands of the nanosheets. In aqueous solution, the axial pyridine ligands are exchanged by water molecules, producing a delamination of the material, where the individual double nanosheets preserve their structure. The original 3D layered structure can be restored by a solvothermal process with pyridine, so that the material shows a "memory effect" during the delamination-pillarization process. Electrochemical activation of a 2D-Co-MOF@Nafion-modified graphite electrode in aqueous solution improves the ionic migration and electron transfer across the film and promotes the formation of the electrocatalytically active cobalt species for the oxygen evolution reaction (OER). The so-activated 2D-Co-MOF@Nafion composite exhibits an outstanding electrocatalytic performance for the OER at neutral pH, with a TOF value (0.034 s-1 at an overpotential of 400 mV) and robustness superior to those reported for similar electrocatalysts under similar conditions. The particular topology of the delaminated nanosheets, with quite distant cobalt centers, precludes the direct coupling between the electrocatalytically active centers of the same sheet. On the other hand, the increase in ionic migration across the film during the electrochemical activation stage rules out the intersheet coupling between active cobalt centers, as this scenario would impair electrolyte permeation. Altogether, the most plausible mechanism for the O-O bond formation is the water nucleophilic attack to single Co(IV)-oxo or Co(III)-oxyl centers. Its high electrochemical efficiency suggests that the presence of nitrogen-containing aromatic equatorial ligands facilitates the water nucleophilic attack, as in the case of the highly efficient cobalt porphyrins.
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Affiliation(s)
- Silvia Gutiérrez-Tarriño
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Avda. de los Naranjos s/n, 46022 Valencia, Spain
| | - José Luis Olloqui-Sariego
- Departamento de Química Física, Universidad de Sevilla. Profesor García González 1. 41012 Sevilla, Spain
| | - Juan José Calvente
- Departamento de Química Física, Universidad de Sevilla. Profesor García González 1. 41012 Sevilla, Spain
| | - Guillermo Mínguez Espallargas
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, c/Catedrático José Beltrán, 2, 46980 Paterna, Spain
| | - Fernando Rey
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Avda. de los Naranjos s/n, 46022 Valencia, Spain
| | - Avelino Corma
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Avda. de los Naranjos s/n, 46022 Valencia, Spain
| | - Pascual Oña-Burgos
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Avda. de los Naranjos s/n, 46022 Valencia, Spain.,Departamento de Química y Física, Centro de Investigación CIAIMBITAL, Universidad de Almería, Ctra. Sacramento, s/n, 04120 Almería, Spain
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23
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Ako AM, Kathalikkattil AC, Elliott R, Soriano-López J, McKeogh IM, Zubair M, Zhu N, García-Melchor M, Kruger PE, Schmitt W. Synthetic Approaches to Metallo-Supramolecular Co II Polygons and Potential Use for H 2O Oxidation. Inorg Chem 2020; 59:14432-14438. [PMID: 32969214 DOI: 10.1021/acs.inorgchem.0c02182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Metal-directed self-assembly has been applied to prepare supramolecular coordination polygons which adopt tetrahedral (1) or trigonal disklike topologies (2). In the solid state, 2 assembles into a stable halide-metal-organic material (Hal-MOM-2), which catalyzes H2O oxidation under photo- and electrocatalytic conditions, operating with a maximum TON = 78 and TOF = 1.26 s-1. DFT calculations attribute the activity to a CoIII-oxyl species. This study provides the first account of how CoII imine based supramolecules can be employed as H2O oxidation catalysts.
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Affiliation(s)
- Ayuk M Ako
- School of Chemistry & AMBER Center, Trinity College, University of Dublin, Dublin D02 PN40, Ireland
| | | | - Rory Elliott
- School of Chemistry & AMBER Center, Trinity College, University of Dublin, Dublin D02 PN40, Ireland
| | - Joaquín Soriano-López
- School of Chemistry & AMBER Center, Trinity College, University of Dublin, Dublin D02 PN40, Ireland
| | - Ian M McKeogh
- School of Chemistry & AMBER Center, Trinity College, University of Dublin, Dublin D02 PN40, Ireland
| | - Muhammad Zubair
- School of Chemistry & AMBER Center, Trinity College, University of Dublin, Dublin D02 PN40, Ireland
| | - Nianyong Zhu
- School of Chemistry & AMBER Center, Trinity College, University of Dublin, Dublin D02 PN40, Ireland
| | - Max García-Melchor
- School of Chemistry & AMBER Center, Trinity College, University of Dublin, Dublin D02 PN40, Ireland
| | - Paul E Kruger
- MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Physical and Chemical Sciences, University of Canterbury, Christchurch 8041, New Zealand
| | - Wolfgang Schmitt
- School of Chemistry & AMBER Center, Trinity College, University of Dublin, Dublin D02 PN40, Ireland
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24
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Arens J, Blasco-Ahicart M, Azmani K, Soriano-López J, García-Eguizábal A, Poblet J, Galan-Mascaros J. Water oxidation electrocatalysis in acidic media with Co-containing polyoxometalates. J Catal 2020. [DOI: 10.1016/j.jcat.2020.06.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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25
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Su XF, Guan W, Yan LK, Su ZM. Tricopper-polyoxometalate catalysts for water oxidation: Redox-inertness of copper center. J Catal 2020. [DOI: 10.1016/j.jcat.2019.11.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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26
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Kaushik R, Sakla R, Amilan Jose D, Ghosh A. Giant iron polyoxometalate that works as a catalyst for water oxidation. NEW J CHEM 2020. [DOI: 10.1039/c9nj05690d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A polyoxometalate (POM) cluster [Mo72Fe30O252(CH3COO)12{Mo2O7(H2O)}2 {H2Mo2O8(H2O)} (H2O)91]. ca. 150 H2O (catalyst I) has been explored as a light-driven water oxidation catalyst. The catalyst is stable and could be reused/recycled several times.
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Affiliation(s)
- Rahul Kaushik
- Department of Chemistry
- National Institute of Technology (NIT)
- Kurukshetra
- India
| | - Rahul Sakla
- Department of Chemistry
- National Institute of Technology (NIT)
- Kurukshetra
- India
| | - D. Amilan Jose
- Department of Chemistry
- National Institute of Technology (NIT)
- Kurukshetra
- India
| | - Amrita Ghosh
- Department of Chemistry
- National Institute of Technology (NIT)
- Kurukshetra
- India
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27
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The Reactivity and Stability of Polyoxometalate Water Oxidation Electrocatalysts. Molecules 2019; 25:molecules25010157. [PMID: 31906045 PMCID: PMC6983101 DOI: 10.3390/molecules25010157] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 12/20/2019] [Accepted: 12/27/2019] [Indexed: 01/08/2023] Open
Abstract
This review describes major advances in the use of functionalized molecular metal oxides (polyoxometalates, POMs) as water oxidation catalysts under electrochemical conditions. The fundamentals of POM-based water oxidation are described, together with a brief overview of general approaches to designing POM water oxidation catalysts. Next, the use of POMs for homogeneous, solution-phase water oxidation is described together with a summary of theoretical studies shedding light on the POM-WOC mechanism. This is followed by a discussion of heterogenization of POMs on electrically conductive substrates for technologically more relevant application studies. The stability of POM water oxidation catalysts is discussed, using select examples where detailed data is already available. The review finishes with an outlook on future perspectives and emerging themes in electrocatalytic polyoxometalate-based water oxidation research.
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28
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Su XF, Yan LK, Su ZM. Theoretical Insight into the Performance of Mn II/III-Monosubstituted Heteropolytungstates as Water Oxidation Catalysts. Inorg Chem 2019; 58:15751-15757. [PMID: 31710211 DOI: 10.1021/acs.inorgchem.9b01806] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The performance of MnII/III-monosubstituted heteropolytungstates [MnIII(H2O)GeW11O39]5- ([GT-MnIII-OH2]5-, where GT = GeW11O39) and [MnII(H2O)GeW11O39]6- ([GT-MnII-OH2]6-) as water oxidation catalysts at pH 9 was explored using density functional theory calculations. The counterion effect was fully considered, in which five and six Na+ ions were included in the calculations for water oxidation catalyzed by [GT-MnIII-OH2]5- and [GT-MnII-OH2]6-, respectively. The process of water oxidation catalysis was divided into three elemental stages: (i) oxidative activation, (ii) O-O bond formation, and (iii) O2 evolution. In the oxidative activation stage, two electrons and two protons are removed from [Na5-GT-MnIII-OH2] and three electrons and two protons are removed from [Na6-GT-MnII-OH2]. Therefore, the MnIV-O• species [Na5-GT-MnIV-O•] is obtained. Two mechanisms, (i) water nucleophilic attack and (ii) oxo-oxo coupling, were demonstrated to be competitive in O-O bond formation triggered from [Na5-GT-MnIV-O•]. In the last stage, the O2 molecule could be readily evolved from the peroxo or dinuclear species and the catalyst returns to the ground state after the coordination of a water molecule(s).
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Affiliation(s)
- Xiao-Fang Su
- Faculty of Chemistry, National & Local United Engineering Lab for Power Battery, Key Laboratory of Polyoxometalate Science of Ministry of Education , Northeast Normal University , Changchun 130024 , People's Republic of China
| | - Li-Kai Yan
- Faculty of Chemistry, National & Local United Engineering Lab for Power Battery, Key Laboratory of Polyoxometalate Science of Ministry of Education , Northeast Normal University , Changchun 130024 , People's Republic of China
| | - Zhong-Min Su
- Faculty of Chemistry, National & Local United Engineering Lab for Power Battery, Key Laboratory of Polyoxometalate Science of Ministry of Education , Northeast Normal University , Changchun 130024 , People's Republic of China
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29
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Craig MJ, Coulter G, Dolan E, Soriano-López J, Mates-Torres E, Schmitt W, García-Melchor M. Universal scaling relations for the rational design of molecular water oxidation catalysts with near-zero overpotential. Nat Commun 2019; 10:4993. [PMID: 31704927 PMCID: PMC6841662 DOI: 10.1038/s41467-019-12994-w] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 10/03/2019] [Indexed: 11/09/2022] Open
Abstract
A major roadblock in realizing large-scale production of hydrogen via electrochemical water splitting is the cost and inefficiency of current catalysts for the oxygen evolution reaction (OER). Computational research has driven important developments in understanding and designing heterogeneous OER catalysts using linear scaling relationships derived from computed binding energies. Herein, we interrogate 17 of the most active molecular OER catalysts, based on different transition metals (Ru, Mn, Fe, Co, Ni, and Cu), and show they obey similar scaling relations to those established for heterogeneous systems. However, we find that the conventional OER descriptor underestimates the activity for very active OER complexes as the standard approach neglects a crucial one-electron oxidation that many molecular catalysts undergo prior to O-O bond formation. Importantly, this additional step allows certain molecular catalysts to circumvent the "overpotential wall", leading to enhanced performance. With this knowledge, we establish fundamental principles for the design of ideal molecular OER catalysts.
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Affiliation(s)
- Michael John Craig
- School of Chemistry, CRANN and AMBER Research Centres, Trinity College Dublin, College Green, Dublin, 2, Ireland
| | - Gabriel Coulter
- School of Chemistry, CRANN and AMBER Research Centres, Trinity College Dublin, College Green, Dublin, 2, Ireland
| | - Eoin Dolan
- School of Chemistry, CRANN and AMBER Research Centres, Trinity College Dublin, College Green, Dublin, 2, Ireland
| | - Joaquín Soriano-López
- School of Chemistry, CRANN and AMBER Research Centres, Trinity College Dublin, College Green, Dublin, 2, Ireland
| | - Eric Mates-Torres
- School of Chemistry, CRANN and AMBER Research Centres, Trinity College Dublin, College Green, Dublin, 2, Ireland
| | - Wolfgang Schmitt
- School of Chemistry, CRANN and AMBER Research Centres, Trinity College Dublin, College Green, Dublin, 2, Ireland
| | - Max García-Melchor
- School of Chemistry, CRANN and AMBER Research Centres, Trinity College Dublin, College Green, Dublin, 2, Ireland.
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30
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Haider A, Bassil BS, Soriano-López J, Qasim HM, Sáenz de Pipaón C, Ibrahim M, Dutta D, Koo YS, Carbó JJ, Poblet JM, Galán-Mascarós JR, Kortz U. 9-Cobalt(II)-Containing 27-Tungsto-3-germanate(IV): Synthesis, Structure, Computational Modeling, and Heterogeneous Water Oxidation Catalysis. Inorg Chem 2019; 58:11308-11316. [PMID: 31411866 DOI: 10.1021/acs.inorgchem.9b01495] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The 9-cobalt(II)-containing trimeric, cyclic polyanion [Co9(OH)3(H2O)6(PO4)2(B-α-GeW9O34)3]21- (1) was synthesized in an aqueous phosphate solution at pH 8 and isolated as a hydrated mixed sodium-cesium salt. Polyanion 1 was structurally and compositionally characterized in the solid state by single-crystal X-ray diffraction, Fourier transform infrared spectroscopy, as well as thermogravimetric and elemental analyses. The magnetic and electrochemical properties of 1 were also studied and compared with those of its phosphorus analogue, [Co9(OH)3(H2O)6(HPO4)2(B-α-PW9O34)3]16- (Co9-P). The electrochemical water oxidation activity of the cesium salt of 1 under heterogeneous conditions was also studied and shown to be superior to that of Co9-P. The experimental results were supported by computational studies.
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Affiliation(s)
- Ali Haider
- Jacobs University , Department of Life Sciences and Chemistry , Campus Ring 1 , 28759 Bremen , Germany
| | - Bassem S Bassil
- Jacobs University , Department of Life Sciences and Chemistry , Campus Ring 1 , 28759 Bremen , Germany.,Department of Chemistry, Faculty of Sciences , University of Balamand , P.O. Box 100, 1300 Tripoli , Lebanon
| | - Joaquín Soriano-López
- Departament de Química Física i Inorgànica , Universitat Rovira i Virgili , Marcel·lí Domingo 1 , E-43007 Tarragona , Spain.,Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology (BIST) , Av. Països Catalans 16 , Tarragona E-43007 , Spain
| | - Hafiz M Qasim
- Jacobs University , Department of Life Sciences and Chemistry , Campus Ring 1 , 28759 Bremen , Germany
| | - Cristina Sáenz de Pipaón
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology (BIST) , Av. Països Catalans 16 , Tarragona E-43007 , Spain
| | - Masooma Ibrahim
- Jacobs University , Department of Life Sciences and Chemistry , Campus Ring 1 , 28759 Bremen , Germany
| | - Daipayan Dutta
- Jacobs University , Department of Life Sciences and Chemistry , Campus Ring 1 , 28759 Bremen , Germany
| | - Yong-Sun Koo
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology (BIST) , Av. Països Catalans 16 , Tarragona E-43007 , Spain
| | - Jorge J Carbó
- Departament de Química Física i Inorgànica , Universitat Rovira i Virgili , Marcel·lí Domingo 1 , E-43007 Tarragona , Spain
| | - Josep M Poblet
- Departament de Química Física i Inorgànica , Universitat Rovira i Virgili , Marcel·lí Domingo 1 , E-43007 Tarragona , Spain
| | - José Ramón Galán-Mascarós
- Institute of Chemical Research of Catalonia (ICIQ) , The Barcelona Institute of Science and Technology (BIST) , Av. Països Catalans 16 , Tarragona E-43007 , Spain.,ICREA , Passeig Lluis Companys 23 , Barcelona E-08010 , Spain
| | - Ulrich Kortz
- Jacobs University , Department of Life Sciences and Chemistry , Campus Ring 1 , 28759 Bremen , Germany
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31
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Su XF, Guan W, Yan LK, Lang ZL, Su ZM. Evidence of two-state reactivity in water oxidation catalyzed by polyoxometalate-based complex [Mn3(H2O)3(SbW9O33)2]12−. J Catal 2019. [DOI: 10.1016/j.jcat.2019.06.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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Recent advances in photoinduced catalysis for water splitting and environmental applications. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.01.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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33
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Su XF, Zhu B, Liu L, Yan LK, Su ZM. DFT characterization on the effect of redox-inactive cation Ca2+ on water oxidation by CoII-based cuboidal catalyst. COMPUT THEOR CHEM 2019. [DOI: 10.1016/j.comptc.2019.01.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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34
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Bae S, Kim H, Jeon D, Ryu J. Catalytic Multilayers for Efficient Solar Water Oxidation through Catalyst Loading and Surface-State Passivation of BiVO 4 Photoanodes. ACS APPLIED MATERIALS & INTERFACES 2019; 11:7990-7999. [PMID: 30757899 DOI: 10.1021/acsami.8b20785] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We studied the kinetics of photoelectrochemical (PEC) water oxidation using a model photoanode BiVO4 modified with various water oxidation catalysts (WOCs) by electrochemical impedance spectroscopy. In particular, we prepared BiVO4 photoanodes with catalytic multilayers (CMs), where cationic polyelectrolytes and anionic polyoxometalate (POM) WOCs were assembled in a desired amount at a nanoscale precision, and compared their performance with those with well-known WOCs such as cobalt phosphate (CoPi) and NiOOH. Our comparative kinetics analysis suggested that the deposition of the CMs improved the kinetics of both the photogenerated charge carrier separation/transport in bulk BiVO4 due to passivation of surface recombination centers and water oxidation at the electrode/electrolyte interface due to deposition of efficient molecular WOCs. On the contrary, the conventional WOCs were mostly effective in the former and less effective in the latter, which is consistent with previous reports. These findings explain why the CMs exhibit an outstanding performance. We also found that separated charge carriers can be efficiently transported to POM WOCs via a hopping mechanism due to the delicate architecture of the CMs, which is reminiscent of natural photosynthetic systems. We believe that this study can not only broaden our understanding on the underlying mechanism of PEC water oxidation but also provide insights for the design and fabrication of novel electrochemical and PEC devices, including efficient water oxidation photoanodes.
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Affiliation(s)
- Sanghyun Bae
- Department of Energy Engineering, School of Energy and Chemical Engineering , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea
| | - Hyunwoo Kim
- Department of Energy Engineering, School of Energy and Chemical Engineering , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea
| | - Dasom Jeon
- Department of Energy Engineering, School of Energy and Chemical Engineering , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea
| | - Jungki Ryu
- Department of Energy Engineering, School of Energy and Chemical Engineering , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea
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35
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Bae S, Jang JE, Lee HW, Ryu J. Tailored Assembly of Molecular Water Oxidation Catalysts on Photoelectrodes for Artificial Photosynthesis. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801328] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Sanghyun Bae
- Department of Energy Engineering; School of Energy and Chemical Engineering; Ulsan National Institute of Science and Technology (UNIST); 50 UNIST-gil Ulsan 44919 Republic of Korea
| | - Ji-Eun Jang
- Department of Energy Engineering; School of Energy and Chemical Engineering; Ulsan National Institute of Science and Technology (UNIST); 50 UNIST-gil Ulsan 44919 Republic of Korea
| | - Hyun-Wook Lee
- Department of Energy Engineering; School of Energy and Chemical Engineering; Ulsan National Institute of Science and Technology (UNIST); 50 UNIST-gil Ulsan 44919 Republic of Korea
| | - Jungki Ryu
- Department of Energy Engineering; School of Energy and Chemical Engineering; Ulsan National Institute of Science and Technology (UNIST); 50 UNIST-gil Ulsan 44919 Republic of Korea
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36
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Fukuzumi S, Lee YM, Nam W. Kinetics and mechanisms of catalytic water oxidation. Dalton Trans 2019; 48:779-798. [PMID: 30560964 DOI: 10.1039/c8dt04341h] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The kinetics and mechanisms of thermal and photochemical oxidation of water with homogeneous and heterogeneous catalysts, including conversion from homogeneous to heterogeneous catalysts in the course of water oxidation, are discussed in this review article. Molecular and homogeneous catalysts have the advantage to clarify the catalytic mechanisms by detecting active intermediates in catalytic water oxidation. On the other hand, heterogeneous nanoparticle catalysts have advantages for practical applications due to high catalytic activity, robustness and easier separation of catalysts by filtration as compared with molecular homogeneous precursors. Ligand oxidation of homogeneous catalysts sometimes results in the dissociation of ligands to form nanoparticles, which act as much more efficient catalysts for water oxidation. Since it is quite difficult to identify active intermediates on the heterogeneous catalyst surface, the mechanism of water oxidation has hardly been clarified under heterogeneous catalytic conditions. This review focuses on the kinetics and mechanisms of catalytic water oxidation with homogeneous catalysts, which may be converted to heterogeneous nanoparticle catalysts depending on various reaction conditions.
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Affiliation(s)
- Shunichi Fukuzumi
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea.
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37
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Liao RZ, Masaoka S, Siegbahn PEM. Metal Oxidation States for the O–O Bond Formation in the Water Oxidation Catalyzed by a Pentanuclear Iron Complex. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02791] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Rong-Zhen Liao
- Key Laboratory for Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medic, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Shigeyuki Masaoka
- Department of Life and Coordination-Complex Molecular Science, Institute for Molecular Science, Higashiyama 5-1, Myodaiji, Okazaki, Aichi 444-8787, Japan
| | - Per E. M. Siegbahn
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, Stockholm 10691, Sweden
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38
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Han Y, Choi K, Oh H, Kim C, Jeon D, Lee C, Lee JH, Ryu J. Cobalt polyoxometalate-derived CoWO4 oxygen-evolving catalysts for efficient electrochemical and photoelectrochemical water oxidation. J Catal 2018. [DOI: 10.1016/j.jcat.2018.09.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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39
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Müller R, Kuznetsov I, Arbelo Y, Trottmann M, Menoni CS, Rocca JJ, Patzke GR, Bleiner D. Depth-Profiling Microanalysis of CoNCN Water-Oxidation Catalyst Using a λ = 46.9 nm Plasma Laser for Nano-Ionization Mass Spectrometry. Anal Chem 2018; 90:9234-9240. [DOI: 10.1021/acs.analchem.8b01740] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Rafael Müller
- University of Zurich, Department of Chemistry, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Ilya Kuznetsov
- NSF Center for Extreme Ultraviolet Science and Technology and Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Yunieski Arbelo
- Swiss Federal Laboratories for Materials Science and Technology (EMPA), Überlandstrasse 129, CH-8600, Dübendorf, Switzerland
| | | | - Carmen S. Menoni
- Swiss Federal Laboratories for Materials Science and Technology (EMPA), Überlandstrasse 129, CH-8600, Dübendorf, Switzerland
| | - Jorge J. Rocca
- NSF Center for Extreme Ultraviolet Science and Technology and Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Greta R. Patzke
- University of Zurich, Department of Chemistry, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Davide Bleiner
- University of Zurich, Department of Chemistry, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
- Swiss Federal Laboratories for Materials Science and Technology (EMPA), Überlandstrasse 129, CH-8600, Dübendorf, Switzerland
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40
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Schilling M, Luber S. Computational Modeling of Cobalt-Based Water Oxidation: Current Status and Future Challenges. Front Chem 2018; 6:100. [PMID: 29721491 PMCID: PMC5915471 DOI: 10.3389/fchem.2018.00100] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 03/20/2018] [Indexed: 12/19/2022] Open
Abstract
A lot of effort is nowadays put into the development of novel water oxidation catalysts. In this context, mechanistic studies are crucial in order to elucidate the reaction mechanisms governing this complex process, new design paradigms and strategies how to improve the stability and efficiency of those catalysts. This review is focused on recent theoretical mechanistic studies in the field of homogeneous cobalt-based water oxidation catalysts. In the first part, computational methodologies and protocols are summarized and evaluated on the basis of their applicability toward real catalytic or smaller model systems, whereby special emphasis is laid on the choice of an appropriate model system. In the second part, an overview of mechanistic studies is presented, from which conceptual guidelines are drawn on how to approach novel studies of catalysts and how to further develop the field of computational modeling of water oxidation reactions.
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Affiliation(s)
- Mauro Schilling
- Department of Chemistry, University of Zürich, Zurich, Switzerland
| | - Sandra Luber
- Department of Chemistry, University of Zürich, Zurich, Switzerland
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41
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Martin-Sabi M, Soriano-López J, Winter RS, Chen JJ, Vilà-Nadal L, Long DL, Galán-Mascarós JR, Cronin L. Redox tuning the Weakley-type polyoxometalate archetype for the oxygen evolution reaction. Nat Catal 2018; 1:208-213. [PMID: 30079397 DOI: 10.1038/s41929-018-0037-1] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Water oxidation is a key reaction for the conversion of solar energy into chemical fuels, but effective water-oxidation catalysts are often based on rare and costly precious metals such as Pt, Ir or Ru. Developing strategies based on earth-abundant metals is important to explore critical aspects of this reaction, and to see whether different and more efficient applications are possible for energy systems. Herein, we present an approach to tuning a redox-active electrocatalyst based on the doping of molybdenum into the tungsten framework of [Co4(H2O)2(PW9O34)2]10-, known as the Weakley sandwich. The Mo-doped framework was confirmed by X-ray crystallography, electrospray ionization mass spectrometry and inductively coupled plasma optical emission spectrometry studies. The doping of molybdenum into the robust Weakley sandwich framework leads to the oxidation of water at a low onset potential, and with no catalyst degradation, whereby the overpotential of the oxygen evolution reaction is lowered by 188 mV compared with the pure tungsten framework.
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Affiliation(s)
| | | | - Ross S Winter
- WestCHEM, School of Chemistry, University of Glasgow, Glasgow, UK
| | - Jia-Jia Chen
- WestCHEM, School of Chemistry, University of Glasgow, Glasgow, UK
| | - Laia Vilà-Nadal
- WestCHEM, School of Chemistry, University of Glasgow, Glasgow, UK
| | - De-Liang Long
- WestCHEM, School of Chemistry, University of Glasgow, Glasgow, UK
| | | | - Leroy Cronin
- WestCHEM, School of Chemistry, University of Glasgow, Glasgow, UK
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42
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Paille G, Gomez-Mingot M, Roch-Marchal C, Lassalle-Kaiser B, Mialane P, Fontecave M, Mellot-Draznieks C, Dolbecq A. A Fully Noble Metal-Free Photosystem Based on Cobalt-Polyoxometalates Immobilized in a Porphyrinic Metal-Organic Framework for Water Oxidation. J Am Chem Soc 2018; 140:3613-3618. [PMID: 29393639 DOI: 10.1021/jacs.7b11788] [Citation(s) in RCA: 166] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The sandwich-type polyoxometalate (POM) [(PW9O34)2Co4(H2O)2]10- was immobilized in the hexagonal channels of the Zr(IV) porphyrinic MOF-545 hybrid framework. The resulting composite was fully characterized by a panel of physicochemical techniques. Calculations allowed identifying the localization of the POM in the vicinity of the Zr6 clusters and porphyrin linkers constituting the MOF. The material exhibits a high photocatalytic activity and good stability for visible-light-driven water oxidation. It thus represents a rare example of an all-in-one fully noble metal-free supramolecular heterogeneous photocatalytic system, with the catalyst and the photosensitizer within the same porous solid material.
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Affiliation(s)
- Grégoire Paille
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint-Quentin en Yvelines, Université Paris-Saclay , 45 Avenue des Etats-Unis , Versailles 78035 Cedex , France.,Laboratoire de Chimie des Processus Biologiques, UMR CNRS 8229, Collège de France, Université Pierre et Marie Curie, PSL Research University , 11 Place Marcelin Berthelot , Paris 75231 Cedex 05 , France
| | - Maria Gomez-Mingot
- Laboratoire de Chimie des Processus Biologiques, UMR CNRS 8229, Collège de France, Université Pierre et Marie Curie, PSL Research University , 11 Place Marcelin Berthelot , Paris 75231 Cedex 05 , France
| | - Catherine Roch-Marchal
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint-Quentin en Yvelines, Université Paris-Saclay , 45 Avenue des Etats-Unis , Versailles 78035 Cedex , France
| | | | - Pierre Mialane
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint-Quentin en Yvelines, Université Paris-Saclay , 45 Avenue des Etats-Unis , Versailles 78035 Cedex , France
| | - Marc Fontecave
- Laboratoire de Chimie des Processus Biologiques, UMR CNRS 8229, Collège de France, Université Pierre et Marie Curie, PSL Research University , 11 Place Marcelin Berthelot , Paris 75231 Cedex 05 , France
| | - Caroline Mellot-Draznieks
- Laboratoire de Chimie des Processus Biologiques, UMR CNRS 8229, Collège de France, Université Pierre et Marie Curie, PSL Research University , 11 Place Marcelin Berthelot , Paris 75231 Cedex 05 , France
| | - Anne Dolbecq
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint-Quentin en Yvelines, Université Paris-Saclay , 45 Avenue des Etats-Unis , Versailles 78035 Cedex , France
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43
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Chen X, Zhou Y, Roy VAL, Han ST. Evolutionary Metal Oxide Clusters for Novel Applications: Toward High-Density Data Storage in Nonvolatile Memories. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30. [PMID: 29058796 DOI: 10.1002/adma.201703950] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 08/31/2017] [Indexed: 05/03/2023]
Abstract
Because of current fabrication limitations, miniaturizing nonvolatile memory devices for managing the explosive increase in big data is challenging. Molecular memories constitute a promising candidate for next-generation memories because their properties can be readily modulated through chemical synthesis. Moreover, these memories can be fabricated through mild solution processing, which can be easily scaled up. Among the various materials, polyoxometalate (POM) molecules have attracted considerable attention for use as novel data-storage nodes for nonvolatile memories. Here, an overview of recent advances in the development of POMs for nonvolatile memories is presented. The general background knowledge of the structure and property diversity of POMs is also summarized. Finally, the challenges and perspectives in the application of POMs in memories are discussed.
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Affiliation(s)
- Xiaoli Chen
- College of Electronic Science and Technology, Shenzhen University, Shenzhen, 518060, P. R. China
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Ye Zhou
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Vellaisamy A L Roy
- Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, 999077, P. R. China
| | - Su-Ting Han
- College of Electronic Science and Technology, Shenzhen University, Shenzhen, 518060, P. R. China
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44
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Müller RJ, Lan J, Lienau K, Moré R, Triana CA, Iannuzzi M, Patzke GR. Monitoring surface transformations of metal carbodiimide water oxidation catalysts by operando XAS and Raman spectroscopy. Dalton Trans 2018; 47:10759-10766. [DOI: 10.1039/c8dt01587b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Chemical and structural transformations at the electrode surface of metal carbodiimides MNCN (M = Co, Ni, Mn, Cu), were studied by operando Raman and XAS spectroscopy during electrocatalytic water oxidation
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Affiliation(s)
- Rafael J. Müller
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - Jinggang Lan
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - Karla Lienau
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - René Moré
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - C. A. Triana
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - Marcella Iannuzzi
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - Greta R. Patzke
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
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45
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Liu B, Glass EN, Wang RP, Cui YT, Harada Y, Huang DJ, Schuppler S, Hill CL, de Groot FMF. Cobalt-to-vanadium charge transfer in polyoxometalate water oxidation catalysts revealed by 2p3d resonant inelastic X-ray scattering. Phys Chem Chem Phys 2018; 20:4554-4562. [PMID: 29376165 DOI: 10.1039/c7cp06786k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
2p3d RIXS spectra reveal electronic structures ofCo4V2WOC, which offers insights into its enhanced catalytic activity thanCo4P2WOC.
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Affiliation(s)
- Boyang Liu
- Inorganic Chemistry & Catalysis
- Debye Institute for Nanomaterials Science
- Utrecht University
- The Netherlands
| | | | - Ru-Pan Wang
- Inorganic Chemistry & Catalysis
- Debye Institute for Nanomaterials Science
- Utrecht University
- The Netherlands
| | - Yi-Tao Cui
- Institute for Solid State Physics
- The University of Tokyo
- Chiba 277-8581
- Japan
| | - Yoshihisa Harada
- Institute for Solid State Physics
- The University of Tokyo
- Chiba 277-8581
- Japan
| | - Di-Jing Huang
- National Synchrotron Radiation Research Center
- Hsinchu 30076
- Taiwan
| | - Stefan Schuppler
- Institut fuer Festkorperphysik
- Karlsruhe Institute of Technology
- Karlsruhe 76021
- Germany
| | | | - Frank M. F. de Groot
- Inorganic Chemistry & Catalysis
- Debye Institute for Nanomaterials Science
- Utrecht University
- The Netherlands
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46
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Liao RZ, Siegbahn PEM. Quantum Chemical Modeling of Homogeneous Water Oxidation Catalysis. CHEMSUSCHEM 2017; 10:4236-4263. [PMID: 28875583 DOI: 10.1002/cssc.201701374] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 08/31/2017] [Indexed: 06/07/2023]
Abstract
The design of efficient and robust water oxidation catalysts has proven challenging in the development of artificial photosynthetic systems for solar energy harnessing and storage. Tremendous progress has been made in the development of homogeneous transition-metal complexes capable of mediating water oxidation. To improve the efficiency of the catalyst and to design new catalysts, a detailed mechanistic understanding is necessary. Quantum chemical modeling calculations have been successfully used to complement the experimental techniques to suggest a catalytic mechanism and identify all stationary points, including transition states for both O-O bond formation and O2 release. In this review, recent progress in the applications of quantum chemical methods for the modeling of homogeneous water oxidation catalysis, covering various transition metals, including manganese, iron, cobalt, nickel, copper, ruthenium, and iridium, is discussed.
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Affiliation(s)
- Rong-Zhen Liao
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Per E M Siegbahn
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
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47
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Schilling M, Hodel FH, Luber S. Discovery of Open Cubane Core Structures for Biomimetic LnCo 3 (OR) 4 Water Oxidation Catalysts. CHEMSUSCHEM 2017; 10:4561-4569. [PMID: 28941193 DOI: 10.1002/cssc.201701527] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Indexed: 06/07/2023]
Abstract
Bio-mimetic catalysts such as LnCo3 (OR)4 (Ln=Er, Tm; OR=alkoxide) cubanes have recently been in the focus of research for artificial water oxidation processes. Previously, the remarkable adaptability with respect to ligand shell, nuclear structure as well as protonation and oxidation states of those catalysts has been shown to be beneficial for the water oxidation process. We further explored the structural flexibility of those catalysts and present here a series of novel structures in which one metal center is pulled out of the cubane cage. This leads to an open cubane core, which is to some extent reminiscent of observed open/closed cubane-core forms of the oxygen-evolving complex in nature's photosystem II. We investigate how those open cubane core models alter the thermodynamics of the water oxidation cycle and how different solvation approaches influence their stability.
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Affiliation(s)
- Mauro Schilling
- Department of Chemistry C, University of Zurich, Winterthurerstrasse 190, 8057, Zürich, Switzerland
| | - Florian H Hodel
- Department of Chemistry C, University of Zurich, Winterthurerstrasse 190, 8057, Zürich, Switzerland
| | - Sandra Luber
- Department of Chemistry C, University of Zurich, Winterthurerstrasse 190, 8057, Zürich, Switzerland
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48
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Yi X, Izarova NV, Stuckart M, Guérin D, Thomas L, Lenfant S, Vuillaume D, van Leusen J, Duchoň T, Nemšák S, Bourone SDM, Schmitz S, Kögerler P. Probing Frontier Orbital Energies of {Co 9(P 2W 15) 3} Polyoxometalate Clusters at Molecule-Metal and Molecule-Water Interfaces. J Am Chem Soc 2017; 139:14501-14510. [PMID: 28901755 PMCID: PMC5649444 DOI: 10.1021/jacs.7b07034] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Indexed: 12/16/2022]
Abstract
Functionalization of polyoxotungstates with organoarsonate coligands enabling surface decoration was explored for the triangular cluster architectures of the composition [CoII9(H2O)6(OH)3(p-RC6H4AsVO3)2(α-PV2WVI15O56)3]25- ({Co9(P2W15)3}, R = H or NH2), isolated as Na25[Co9(OH)3(H2O)6(C6H5AsO3)2(P2W15O56)3]·86H2O (Na-1; triclinic, P1̅, a = 25.8088(3) Å, b = 25.8336(3) Å, c = 27.1598(3) Å, α = 78.1282(11)°, β = 61.7276(14)°, γ = 60.6220(14)°, V = 13888.9(3) Å3, Z = 2) and Na25[Co9(OH)3(H2O)6(H2NC6H4AsO3)2(P2W15O56)3]·86H2O (Na-2; triclinic, P1̅, a = 14.2262(2) Å, b = 24.8597(4) Å, c = 37.9388(4) Å, α = 81.9672(10)°, β = 87.8161(10)°, γ = 76.5409(12)°, V = 12920.6(3) Å3, Z = 2). The axially oriented para-aminophenyl groups in 2 facilitate the formation of self-assembled monolayers on gold surfaces and thus provide a viable molecular platform for charge transport studies of magnetically functionalized polyoxometalates. The title systems were isolated and characterized in the solid state, in aqueous solutions, and on metal surfaces. Using conducting tip atomic force microscopy, the energies of {Co9(P2W15)3} frontier molecular orbitals in the surface-bound state were found to directly correlate with cyclic voltammetry data in aqueous solution.
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Affiliation(s)
- Xiaofeng Yi
- Jülich-Aachen
Research Alliance (JARA-FIT) and Peter Grünberg Institute 6, Forschungszentrum Jülich, D-52425 Jülich, Germany
- Institute
of Inorganic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - Natalya V. Izarova
- Jülich-Aachen
Research Alliance (JARA-FIT) and Peter Grünberg Institute 6, Forschungszentrum Jülich, D-52425 Jülich, Germany
| | - Maria Stuckart
- Jülich-Aachen
Research Alliance (JARA-FIT) and Peter Grünberg Institute 6, Forschungszentrum Jülich, D-52425 Jülich, Germany
- Institute
of Inorganic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - David Guérin
- Institute
of Electronics, Microelectronics and Nanotechnology, CNRS, University of Lille, 59652 Villeneuve d’Ascq, France
| | - Louis Thomas
- Institute
of Electronics, Microelectronics and Nanotechnology, CNRS, University of Lille, 59652 Villeneuve d’Ascq, France
| | - Stéphane Lenfant
- Institute
of Electronics, Microelectronics and Nanotechnology, CNRS, University of Lille, 59652 Villeneuve d’Ascq, France
| | - Dominique Vuillaume
- Institute
of Electronics, Microelectronics and Nanotechnology, CNRS, University of Lille, 59652 Villeneuve d’Ascq, France
| | - Jan van Leusen
- Institute
of Inorganic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - Tomáš Duchoň
- Faculty
of Mathematics and Physics, Charles University, 18000 Prague, Czech Republic
| | - Slavomír Nemšák
- Jülich-Aachen
Research Alliance (JARA-FIT) and Peter Grünberg Institute 6, Forschungszentrum Jülich, D-52425 Jülich, Germany
- BESSY-II,
Helmholtz-Zentrum Berlin, D-12489 Berlin, Germany
| | - Svenja D. M. Bourone
- Institute
of Inorganic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - Sebastian Schmitz
- Institute
of Inorganic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
| | - Paul Kögerler
- Jülich-Aachen
Research Alliance (JARA-FIT) and Peter Grünberg Institute 6, Forschungszentrum Jülich, D-52425 Jülich, Germany
- Institute
of Inorganic Chemistry, RWTH Aachen University, D-52074 Aachen, Germany
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49
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Song F, Moré R, Schilling M, Smolentsev G, Azzaroli N, Fox T, Luber S, Patzke GR. {Co4O4} and {CoxNi4–xO4} Cubane Water Oxidation Catalysts as Surface Cut-Outs of Cobalt Oxides. J Am Chem Soc 2017; 139:14198-14208. [DOI: 10.1021/jacs.7b07361] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Fangyuan Song
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - René Moré
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Mauro Schilling
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | | | | | - Thomas Fox
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Sandra Luber
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Greta R. Patzke
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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