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Liu ZZ, Huang SL, Yang GY. High-Nuclear Co-Added Polyoxometalate-Based Chain: Electrocatalytic Oxygen Production. Inorg Chem 2024; 63:12803-12809. [PMID: 38957131 DOI: 10.1021/acs.inorgchem.4c01228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
A high-nuclear Co-added polyoxometalate (CoAP) was synthesized via a hydrothermal reaction: H14.5K9Na7.5-{[Co8(μ2-OH)(μ3-OH)2(H2O)2(Co(H2O)GeW6O26)(B-α-GeW9O34)2][BO(OH)2][Co12(μ2-OH)(μ3-OH)5(H2O)3(Co(H2O)GeW6O26)(GeW6O26)(B-α-GeW9O34)]}·46H2O (1). The polyoxoanion of 1 contains a large Co20 cluster gathered by lacunary GeW6O26 and GeW9O34 subunits. 1 represents a one-dimensional (1D) chain formed by adjacent polyoxoanions coupling through a CoO6 double bridge, showing the first example of a high-nuclear CoAP-based inorganic chain. 1 served as an efficient electrocatalyst in oxygen evolution reactions (OERs).
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Affiliation(s)
- Zheng-Zheng Liu
- MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China
| | - Sheng-Li Huang
- MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China
| | - Guo-Yu Yang
- MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China
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2
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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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3
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Manohar EM, Dhandapani HN, Roy S, Pełka R, Rams M, Konieczny P, Tothadi S, Kundu S, Dey A, Das S. Tetranuclear Co II4O 4 Cubane Complex: Effective Catalyst Toward Electrochemical Water Oxidation. Inorg Chem 2024; 63:4883-4897. [PMID: 38494956 DOI: 10.1021/acs.inorgchem.3c03956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
The reaction of Co(OAc)2·6H2O with 2,2'-[{(1E,1'E)-pyridine-2,6-diyl-bis(methaneylylidene)bis(azaneylylidene)}diphenol](LH2) a multisite coordination ligand and Et3N in a 1:2:3 stoichiometric ratio forms a tetranuclear complex Co4(L)2(μ-η1:η1-OAc)2(η2-OAc)2]· 1.5 CH3OH· 1.5 CHCl3 (1). Based on X-ray diffraction investigations, complex 1 comprises a distorted Co4O4 cubane core consisting of two completely deprotonated ligands [L]2- and four acetate ligands. Two distinct types of CoII centers exist in the complex, where the Co(2) center has a distorted octahedral geometry; alternatively, Co(1) has a distorted pentagonal-bipyramidal geometry. Analysis of magnetic data in 1 shows predominant antiferromagnetic coupling (J = -2.1 cm-1), while the magnetic anisotropy is the easy-plane type (D1 = 8.8, D2 = 0.76 cm-1). Furthermore, complex 1 demonstrates an electrochemical oxygen evolution reaction (OER) with an overpotential of 325 mV and Tafel slope of 85 mV dec-1, required to attain a current density of 10 mA cm-2 and moderate stability under alkaline conditions (pH = 14). Electrochemical impedance spectroscopy studies reveal that compound 1 has a charge transfer resistance (Rct) of 2.927 Ω, which is comparatively lower than standard Co3O4 (5.242 Ω), indicating rapid charge transfer kinetics between electrode and electrolyte solution that enhances higher catalytic activity toward OER kinetics.
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Affiliation(s)
- Ezhava Manu Manohar
- Department of Basic Sciences, Chemistry Discipline, Institute of Infrastructure, Technology, Research, and Management, Near Khokhra Circle, Maninagar East, Ahmedabad, Gujarat 380026, India
| | - Hariharan N Dhandapani
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu 630003, India
| | - Soumalya Roy
- Department of Basic Sciences, Chemistry Discipline, Institute of Infrastructure, Technology, Research, and Management, Near Khokhra Circle, Maninagar East, Ahmedabad, Gujarat 380026, India
| | - Robert Pełka
- Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, Krakow PL-31342, Poland
| | - Michał Rams
- Institute of Physics, Jagiellonian University, Łojasiewicza 11, Kraków 30348, Poland
| | - Piotr Konieczny
- Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, Krakow PL-31342, Poland
| | - Srinu Tothadi
- Analytical and Environmental Sciences Division and Centralized Instrumentation Facility, CSIR-Central Salt and Marine Chemicals Research Institute, Gijubhai Badheka Marg, Bhavnagar 364002, India
| | - Subrata Kundu
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu 630003, India
| | - Atanu Dey
- Department of Chemistry, Gandhi Institute of Technology and Management (GITAM), NH 207, Nagadenehalli, Doddaballapur Taluk, Bengaluru, Karnataka 561203, India
| | - Sourav Das
- Department of Basic Sciences, Chemistry Discipline, Institute of Infrastructure, Technology, Research, and Management, Near Khokhra Circle, Maninagar East, Ahmedabad, Gujarat 380026, India
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Singh A, Roy L. Evolution in the Design of Water Oxidation Catalysts with Transition-Metals: A Perspective on Biological, Molecular, Supramolecular, and Hybrid Approaches. ACS OMEGA 2024; 9:9886-9920. [PMID: 38463281 PMCID: PMC10918817 DOI: 10.1021/acsomega.3c07847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 02/05/2024] [Accepted: 02/07/2024] [Indexed: 03/12/2024]
Abstract
Increased demand for a carbon-neutral sustainable energy scheme augmented by climatic threats motivates the design and exploration of novel approaches that reserve intermittent solar energy in the form of chemical bonds in molecules and materials. In this context, inspired by biological processes, artificial photosynthesis has garnered significant attention as a promising solution to convert solar power into chemical fuels from abundantly found H2O. Among the two redox half-reactions in artificial photosynthesis, the four-electron oxidation of water according to 2H2O → O2 + 4H+ + 4e- comprises the major bottleneck and is a severe impediment toward sustainable energy production. As such, devising new catalytic platforms, with traditional concepts of molecular, materials and biological catalysis and capable of integrating the functional architectures of the natural oxygen-evolving complex in photosystem II would certainly be a value-addition toward this objective. In this review, we discuss the progress in construction of ideal water oxidation catalysts (WOCs), starting with the ingenuity of the biological design with earth-abundant transition metal ions, which then diverges into molecular, supramolecular and hybrid approaches, blurring any existing chemical or conceptual boundaries. We focus on the geometric, electronic, and mechanistic understanding of state-of-the-art homogeneous transition-metal containing molecular WOCs and summarize the limiting factors such as choice of ligands and predominance of environmentally unrewarding and expensive noble-metals, necessity of high-valency on metal, thermodynamic instability of intermediates, and reversibility of reactions that create challenges in construction of robust and efficient water oxidation catalyst. We highlight how judicious heterogenization of atom-efficient molecular WOCs in supramolecular and hybrid approaches put forth promising avenues to alleviate the existing problems in molecular catalysis, albeit retaining their fascinating intrinsic reactivities. Taken together, our overview is expected to provide guiding principles on opportunities, challenges, and crucial factors for designing novel water oxidation catalysts based on a synergy between conventional and contemporary methodologies that will incite the expansion of the domain of artificial photosynthesis.
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Affiliation(s)
- Ajeet
Kumar Singh
- Institute of Chemical Technology
Mumbai−IOC Odisha Campus Bhubaneswar, IIT Kharagpur Extension
Centre, Bhubaneswar − 751013 India
| | - Lisa Roy
- Institute of Chemical Technology
Mumbai−IOC Odisha Campus Bhubaneswar, IIT Kharagpur Extension
Centre, Bhubaneswar − 751013 India
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5
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Utievskyi Y, Neumann C, Sindlinger J, Schutjajew K, Oschatz M, Turchanin A, Ueberschaar N, Schacher FH. Polyoxometalate-Modified Amphiphilic Polystyrene- block-poly(2-(dimethylamino)ethyl methacrylate) Membranes for Heterogeneous Glucose to Formic Acid Methyl Ester Oxidation. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2498. [PMID: 37764527 PMCID: PMC10536830 DOI: 10.3390/nano13182498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/21/2023] [Accepted: 08/31/2023] [Indexed: 09/29/2023]
Abstract
Herein, we present a new heterogeneous catalyst active toward glucose to formic acid methyl ester oxidation. The catalyst was fabricated via electrostatic immobilization of the inorganic polyoxometalate HPA-5 catalyst H8[PMo7V5O40] onto the pore surface of amphiphilic block copolymer membranes prepared via non-solvent-induced phase separation (NIPS). The catalyst immobilization was achieved via wet impregnation due to strong coulombic interactions between protonated tertiary amino groups of the polar poly(2-(dimethylamino)ethyl methacrylate) block and the anionic catalyst. Overall, three sets of five consecutive catalytic cycles were performed in an autoclave under 90 °С and 11.5 bar air pressure in methanol, and the corresponding yields of formic acid methyl ester were quantified via head-space gas chromatography. The obtained results demonstrate that the membrane maintains its catalytic activity over multiple cycles, resulting in high to moderate yields in comparison to a homogeneous catalytic system. Nevertheless, presumably due to leaching, the catalytic activity declines over five catalytic cycles. The morphological and chemical changes of the membrane during the prolonged catalysis under harsh conditions were examined in detail using different analytic tools, and it seems that the underlying block copolymer is not affected by the catalytic process.
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Affiliation(s)
- Yurii Utievskyi
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany
| | - Christof Neumann
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Lessingstraße 10, 07743 Jena, Germany
| | - Julia Sindlinger
- Mass Spectrometry Platform, Faculty of Chemistry and Earth Sciences, Friedrich Schiller University Jena, Humboldtstraße 8, 07743 Jena, Germany
| | - Konstantin Schutjajew
- Institute for Technical Chemistry and Environmental Chemistry (ITUC), Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany
| | - Martin Oschatz
- Institute for Technical Chemistry and Environmental Chemistry (ITUC), Friedrich Schiller University Jena, Philosophenweg 7a, 07743 Jena, Germany
- Center for Energy and Environmental Chemistry (CEEC), Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Andrey Turchanin
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Lessingstraße 10, 07743 Jena, Germany
- Center for Energy and Environmental Chemistry (CEEC), Friedrich Schiller University Jena, 07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Nico Ueberschaar
- Mass Spectrometry Platform, Faculty of Chemistry and Earth Sciences, Friedrich Schiller University Jena, Humboldtstraße 8, 07743 Jena, Germany
| | - Felix H. Schacher
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany
- Center for Energy and Environmental Chemistry (CEEC), Friedrich Schiller University Jena, 07743 Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, 07743 Jena, Germany
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6
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Sardivand-Chegini I, Zakavi S, Rezvani MA. Periodate-Mediated Aerobic Oxidation of Sulfides over a Bifunctional Porphyrin-polyoxometalate Catalyst: Photosensitized Singlet Oxygen Oxidation of Iodate to Periodate. Inorg Chem 2023; 62:13387-13399. [PMID: 37560902 DOI: 10.1021/acs.inorgchem.3c01740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
Regeneration of terminal oxidants by molecular oxygen in metal-catalyzed oxidations of organic substrates has the advantage of avoiding the use of stoichiometric amounts of hazardous and/or expensive reagents to meet (some of) the green chemistry requirements. In the present study, photosensitized singlet oxygen oxidation of iodate to periodate has been used to regenerate the oxidant in polyoxometalate (POM)-catalyzed oxidation of sulfides to sulfoxides with periodate in water. To the best of our knowledge, it is the first report on singlet oxygen oxidation of iodate to periodate. In order to determine the contribution of photooxidation and oxidation pathways in the formation of sulfoxide, the oxidation of diphenyl sulfide with a very low reactivity toward aerobic photooxidation was studied; a sevenfold increase in the conversion of the sulfide to the diphenyl sulfoxide was observed for the reaction conducted in the presence of H2TMPyP-PW12O40/IO3-/O2/hν compared to that in the presence of H2TMPyP-PW12O40/O2/hν. Also, under the same conditions, a ca. 1.5-fold increase was observed in the case of methyl phenyl sulfide, which shows high reactivity toward both the oxidation and photooxidation reactions. A porphyrin-POM nanocomposite formed by the electrostatic immobilization of meso-tetra(N-methylpyridinium-4-yl)porphyrin (H2TMPyP) on PW12O40 was employed for the one-pot oxidation and photooxidation reactions. Field-emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), diffuse-reflectance UV-vis spectroscopy, thermal gravimetric analysis, and Fourier transform infrared were used to characterize the formation of the hybrid compound. An average particle size of 42 nm was estimated for H2TMPyP-PW12O40 from XRD peak broadening using the Scherrer equation. Also, FESEM images showed the formation of nearly spherical nanoparticles with a size of ca. 200 nm. The redshift of the Soret band of H2TMPyP upon immobilization on POM was attributed to strong N-H···O hydrogen-bond interactions between POM and porphyrin.
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Affiliation(s)
- Issa Sardivand-Chegini
- Department of Chemistry, Faculty of Science, University of Zanjan, University Blvd., Zanjan 45371-38791, Iran
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Saeed Zakavi
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Mohammad Ali Rezvani
- Department of Chemistry, Faculty of Science, University of Zanjan, University Blvd., Zanjan 45371-38791, Iran
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7
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Suremann NF, McCarthy BD, Gschwind W, Kumar A, Johnson BA, Hammarström L, Ott S. Molecular Catalysis of Energy Relevance in Metal-Organic Frameworks: From Higher Coordination Sphere to System Effects. Chem Rev 2023; 123:6545-6611. [PMID: 37184577 DOI: 10.1021/acs.chemrev.2c00587] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The modularity and synthetic flexibility of metal-organic frameworks (MOFs) have provoked analogies with enzymes, and even the term MOFzymes has been coined. In this review, we focus on molecular catalysis of energy relevance in MOFs, more specifically water oxidation, oxygen and carbon dioxide reduction, as well as hydrogen evolution in context of the MOF-enzyme analogy. Similar to enzymes, catalyst encapsulation in MOFs leads to structural stabilization under turnover conditions, while catalyst motifs that are synthetically out of reach in a homogeneous solution phase may be attainable as secondary building units in MOFs. Exploring the unique synthetic possibilities in MOFs, specific groups in the second and third coordination sphere around the catalytic active site have been incorporated to facilitate catalysis. A key difference between enzymes and MOFs is the fact that active site concentrations in the latter are often considerably higher, leading to charge and mass transport limitations in MOFs that are more severe than those in enzymes. High catalyst concentrations also put a limit on the distance between catalysts, and thus the available space for higher coordination sphere engineering. As transport is important for MOF-borne catalysis, a system perspective is chosen to highlight concepts that address the issue. A detailed section on transport and light-driven reactivity sets the stage for a concise review of the currently available literature on utilizing principles from Nature and system design for the preparation of catalytic MOF-based materials.
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Affiliation(s)
- Nina F Suremann
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 523, 75120 Uppsala, Sweden
| | - Brian D McCarthy
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 523, 75120 Uppsala, Sweden
| | - Wanja Gschwind
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 523, 75120 Uppsala, Sweden
| | - Amol Kumar
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 523, 75120 Uppsala, Sweden
| | - Ben A Johnson
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 523, 75120 Uppsala, Sweden
- Technical University Munich (TUM), Campus Straubing for Biotechnology and Sustainability, Uferstraße 53, 94315 Straubing, Germany
| | - Leif Hammarström
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 523, 75120 Uppsala, Sweden
| | - Sascha Ott
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 523, 75120 Uppsala, Sweden
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8
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Ali Akbari MS, Nandy S, Chae KH, Bikas R, Kozakiewicz-Piekarz A, Najafpour MM. Water Oxidation by a Copper(II) Complex with 6,6'-Dihydroxy-2,2'-Bipyridine Ligand: Challenges and an Alternative Mechanism. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:5542-5553. [PMID: 37029750 DOI: 10.1021/acs.langmuir.3c00322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Recently, copper(II) complexes have been extensively investigated as oxygen-evolution reaction (OER) catalysts through a water-oxidation reaction. Herein, new findings regarding OER in the presence of a Cu(II) complex with 6,6'-dihydroxy-2,2'-bipyridine ligand are reported. Using scanning electron microscopy, energy dispersive spectrometry, X-ray diffraction, Raman spectroscopy, in situ visible microscopy, in situ visible spectroelectrochemistry, X-ray absorption spectroscopy, and electrochemistry, it is hypothesized that the film formed on the electrode's surface in the presence of this complex causes an appropriated matrix to produce Cu (hydr)oxide. The resulting Cu (hydr)oxide could be a candidate for OER catalysis. The formed film could form Cu (hydr)oxide and stabilize it. Thus, OER activity increases in the presence of this complex.
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Affiliation(s)
- Mohammad Saleh Ali Akbari
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Subhajit Nandy
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Keun Hwa Chae
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Rahman Bikas
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, 34148-96818 Qazvin, Iran
| | - Anna Kozakiewicz-Piekarz
- Department of Biomedical and Polymer Chemistry, Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland
| | - Mohammad Mahdi Najafpour
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
- Center of Climate Change and Global Warming, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
- Research Center for Basic Sciences and Modern Technologies (RBST), Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
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9
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Sood P, Joshi A, Singh M. A rare polyoxometalate cluster [NiW 12O 44] 14- based solid as a pre-catalyst for efficient and long-term oxygen evolution. NANOSCALE ADVANCES 2022; 4:5015-5020. [PMID: 36504740 PMCID: PMC9680933 DOI: 10.1039/d2na00646d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 10/11/2022] [Indexed: 06/17/2023]
Abstract
Polyoxometalates (POMs) are an eminent class of metal oxide anionic clusters of early transition metals with huge structural diversity. Herein, a [NiW12O44]14- cluster based solid, (C5H7N2)6[NiW12O44], has been reported (PS-78). The [NiW12O44]14- cluster bridges the missing gap of 1 : 12 hetero-POMs of Keggin and Silverton together with a coordination number of 8 of the central heteroatom (Ni). Furthermore PS-78 has been explored as an efficient and highly sustained oxygen evolution pre-catalyst in alkaline medium with an overpotential of 347 mV to attain a current density of 10 mA cm-2 and long-term stability up to 96 hours. Furthermore, mechanistic investigation showed that in situ generated NiO and WO x (x = 1, 2) species act as active species for the oxygen evolution reaction. This study will open up new avenues for exploring POMs' new topologies and the potential of POMs as effective pre-catalysts in electrocatalytic applications.
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Affiliation(s)
- Parul Sood
- Institute of Nano Science and Technology Knowledge City, Sector-81 Mohali Punjab India
| | - Arti Joshi
- Institute of Nano Science and Technology Knowledge City, Sector-81 Mohali Punjab India
| | - Monika Singh
- Institute of Nano Science and Technology Knowledge City, Sector-81 Mohali Punjab India
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10
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Urgoitia G, Herrero MT, SanMartin R. Metal-Catalyzed, Photo-Assisted Selective Transformation of Tertiary Alkylbenzenes and Polystyrenes into Carbonyl Compounds. CHEMSUSCHEM 2022; 15:e202200940. [PMID: 35713591 PMCID: PMC9544855 DOI: 10.1002/cssc.202200940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/17/2022] [Indexed: 06/15/2023]
Abstract
Every year, thousands of tons of polystyrene are produced and discarded, filling landfills and polluting the marine environment. Although several degradation alternatives have been proposed, the need for an effective procedure for the chemical recycling of polystyrene still remains. Here, a vanadium-catalyzed reaction, assisted by visible light, promoted the direct, selective conversion of tertiary alkylbenzenes into acetophenone and other ketone derivatives. Likewise, standard polystyrene samples as well as polystyrenes from insulation and packaging waste could be chemically recycled into acetophenone in a scalable way regardless of their molecular weight, polydispersity, or form. Preliminary mechanistic investigations revealed the participation of singlet oxygen, superoxide, and hydroxyl radical species in this homogenously catalyzed process. Acetophenone could be used as an additive to accelerate the reaction and to increase the yields in some cases.
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Affiliation(s)
- Garazi Urgoitia
- Department of Organic and Inorganic ChemistryFaculty of Science and TechnologyUniversity of the Basque Country (UPV/EHU)Sarriena auzoa, z/g.48940LeioaSpain
| | - María Teresa Herrero
- Department of Organic and Inorganic ChemistryFaculty of Science and TechnologyUniversity of the Basque Country (UPV/EHU)Sarriena auzoa, z/g.48940LeioaSpain
| | - Raul SanMartin
- Department of Organic and Inorganic ChemistryFaculty of Science and TechnologyUniversity of the Basque Country (UPV/EHU)Sarriena auzoa, z/g.48940LeioaSpain
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11
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Maru K, Kalla S, Jangir R. MOF/POM hybrids as catalysts for organic transformations. Dalton Trans 2022; 51:11952-11986. [PMID: 35916617 DOI: 10.1039/d2dt01895k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Insertion of molecular metal oxides, e.g. polyoxometalates (POMs), into metal-organic frameworks (MOFs) opens up new research opportunities in various fields, particularly in catalysis. POM/MOF composites have strong acidity, oxygen-rich surface, and redox capacity due to typical characteristics of POMs and the large surface area, highly organized structures, tunable pore size, and shape are due to MOFs. Such hybrid materials have gained a lot of attention due to astonishing structural features, and hence have potential applications in organic catalysis, sorption and separation, proton conduction, magnetism, lithium-ion batteries, supercapacitors, electrochemistry, medicine, bio-fuel, and so on. The exceptional chemical and physical characteristics of POMOFs make them useful as catalysts in simple organic transformations with high capacity and selectivity. Here, the thorough catalytic study starts with a brief introduction related to POMs and MOFs, and is followed by the synthetic strategies and applications of these materials in several catalytic organic transformations. Furthermore, catalytic conversions like oxidation, condensation, esterification, and some other types of catalytic reactions including photocatalytic reactions are discussed in length with their plausible catalytic mechanisms. The disadvantages of the POMOFs and difficulties faced in the field have also been explored briefly from our perspectives.
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Affiliation(s)
- Ketan Maru
- Sardar Vallabhbhai National Institute of Technology, Ichchanath, Surat-395 007, Gujarat, India.
| | - Sarita Kalla
- Sardar Vallabhbhai National Institute of Technology, Ichchanath, Surat-395 007, Gujarat, India.
| | - Ritambhara Jangir
- Sardar Vallabhbhai National Institute of Technology, Ichchanath, Surat-395 007, Gujarat, India.
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12
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Mousazade Y, Nandy S, Bikas R, Aleshkevych P, Chae KH, Siczek M, Lis T, Allakhverdiev SI, Najafpour MM. A copper(II) coordination compound under water-oxidation reaction at neutral conditions: decomposition on the counter electrode. Dalton Trans 2022; 51:12170-12180. [PMID: 35876690 DOI: 10.1039/d2dt01572b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the context of energy storage, the oxygen-evolution reaction (OER, 2H2O → O2 + 4H+ + 4e-) through the water-oxidation reaction is a thermodynamically uphill reaction in overall water splitting. In recent years, copper(II) coordination compounds have been extensively used for the OER. However, challenges remain in finding the mechanism of the OER in the presence of these metal coordination compounds. Herein, the electrochemical OER activity is investigated in the presence of a copper(II) coordination compound at pH ≈ 7. While the investigations on finding true catalysts for the OER are focused on the working electrode, herein, for the first time, the focus is on the decomposition of copper(II) coordination compound (CuL3, L: 2,2'-bipyridine N,N'-dioxide) during the OER on the counter electrode toward the precipitation of copper(I) oxide and metallic Cu.
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Affiliation(s)
- Younes Mousazade
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran.
| | - Subhajit Nandy
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Rahman Bikas
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, 34148-96818, Qazvin, Iran
| | - Pavlo Aleshkevych
- Institute of Physics, Polish Academy of Sciences, Warsaw, 02-668, Poland
| | - Keun Hwa Chae
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Milosz Siczek
- Faculty of Chemistry, University of Wroclaw, Joliot-Curie 14, Wroclaw 50-383, Poland
| | - Tadeusz Lis
- Faculty of Chemistry, University of Wroclaw, Joliot-Curie 14, Wroclaw 50-383, Poland
| | - Suleyman I Allakhverdiev
- K. A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia.
| | - Mohammad Mahdi Najafpour
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran. .,Center of Climate Change and Global Warming, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran.,Research Center for Basic Sciences & Modern Technologies (RBST), Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran
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13
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Nandan SP, Gumerova NI, Schubert JS, Saito H, Rompel A, Cherevan A, Eder D. Immobilization of a [Co IIICo II(H 2O)W 11O 39] 7– Polyoxoanion for the Photocatalytic Oxygen Evolution Reaction. ACS MATERIALS AU 2022; 2:505-515. [PMID: 35856075 PMCID: PMC9284608 DOI: 10.1021/acsmaterialsau.2c00025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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The ongoing transition
to renewable energy sources and the implementation
of artificial photosynthetic setups call for an efficient and stable
water oxidation catalyst (WOC). Here, we heterogenize a molecular
all-inorganic [CoIIICoII(H2O)W11O39]7– ({CoIIICoIIW11}) Keggin-type polyoxometalate (POM) onto a
model TiO2 surface, employing a 3-aminopropyltriethoxysilane
(APTES) linker to form a novel heterogeneous photosystem for light-driven
water oxidation. The {CoIIICoIIW11}-APTES-TiO2 hybrid is characterized using a set of spectroscopic
and microscopic techniques to reveal the POM integrity and dispersion
to elucidate the POM/APTES and APTES/TiO2 binding modes
as well as to visualize the attachment of individual clusters. We
conduct photocatalytic studies under heterogeneous and homogeneous
conditions and show that {CoIIICoIIW11}-APTES-TiO2 performs as an active light-driven WOC, wherein
{CoIIICoIIW11} acts as a stable co-catalyst
for water oxidation. In contrast to the homogeneous WOC performance
of this POM, the heterogenized photosystem yields a constant WOC rate
for at least 10 h without any apparent deactivation, demonstrating
that TiO2 not only stabilizes the POM but also acts as
a photosensitizer. Complementary studies using photoluminescence (PL)
emission spectroscopy elucidate the charge transfer mechanism and
enhanced WOC activity. The {CoIIICoIIW11}-APTES-TiO2 photocatalyst serves as a prime example of
a hybrid homogeneous–heterogeneous photosystem that combines
the advantages of solid-state absorbers and well-defined molecular
co-catalysts, which will be of interest to both scientific communities
and applications in photoelectrocatalysis and CO2 reduction.
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Affiliation(s)
- Sreejith P. Nandan
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/BC/02, 1060 Vienna, Austria
| | - Nadiia I. Gumerova
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstraße 14, 1090 Vienna, Austria
| | - Jasmin S. Schubert
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/BC/02, 1060 Vienna, Austria
| | - Hikaru Saito
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasugakoen, Kasuga, Fukuoka 816-8580, Japan
| | - Annette Rompel
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstraße 14, 1090 Vienna, Austria
| | - Alexey Cherevan
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/BC/02, 1060 Vienna, Austria
| | - Dominik Eder
- Institute of Materials Chemistry, TU Wien, Getreidemarkt 9/BC/02, 1060 Vienna, Austria
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14
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15
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Electrochemical sensor based on the polyoxometalate nanocluster [(NH4)12[Mo36(NO)4O108(H2O)16]·33H2O and molybdenum disulfide nanocomposite materials for simultaneous detection of dihydroxybenzene isomers. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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16
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Denisova EA, Kostyukovich AY, Fakhrutdinov AN, Korabelnikova VA, Galushko AS, Ananikov VP. “Hidden” Nanoscale Catalysis in Alkyne Hydrogenation with Well-Defined Molecular Pd/NHC Complexes. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01749] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Ekaterina A. Denisova
- Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky Prospekt 47, Moscow 119991, Russia
| | - Alexander Yu. Kostyukovich
- Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky Prospekt 47, Moscow 119991, Russia
| | - Artem N. Fakhrutdinov
- Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky Prospekt 47, Moscow 119991, Russia
| | - Viktoria A. Korabelnikova
- Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky Prospekt 47, Moscow 119991, Russia
| | - Alexey S. Galushko
- Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky Prospekt 47, Moscow 119991, Russia
| | - Valentine P. Ananikov
- Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky Prospekt 47, Moscow 119991, Russia
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17
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Boer DD, Siberie Q, Siegler MA, Ferber TH, Moritz DC, Hofmann JP, Hetterscheid DGH. On the Homogeneity of a Cobalt-Based Water Oxidation Catalyst. ACS Catal 2022; 12:4597-4607. [PMID: 35465245 PMCID: PMC9016703 DOI: 10.1021/acscatal.2c01299] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 03/21/2022] [Indexed: 01/01/2023]
Abstract
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The homogeneity of
molecular Co-based water oxidation catalysts
(WOCs) has been a subject of debate over the last 10 years as assumed
various homogeneous Co-based WOCs were found to actually form CoOx under operating conditions. The homogeneity
of the Co(HL) (HL = N,N-bis(2,2′-bipyrid-6-yl)amine) system was investigated
with cyclic voltammetry, electrochemical quartz crystal microbalance,
and X-ray photoelectron spectroscopy. The obtained experimental results
were compared with heterogeneous CoOx.
Although it is shown that Co(HL) interacts with the electrode
during electrocatalysis, the formation of CoOx was not observed. Instead, a molecular deposit of Co(HL) was found to be formed on the electrode surface. This study
shows that deposition of catalytic material is not necessarily linked
to the decomposition of homogeneous cobalt-based water oxidation catalysts.
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Affiliation(s)
- Daan den Boer
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, RA, Leiden 2300, The Netherlands
| | - Quentin Siberie
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, RA, Leiden 2300, The Netherlands
| | - Maxime A. Siegler
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore 21218 Maryland, United States
| | - Thimo H. Ferber
- Surface Science Laboratory, Department of Materials and Earth Sciences, Technical University of Darmstadt, Otto-Berndt-Strasse 3, Darmstadt 64287, Germany
| | - Dominik C. Moritz
- Surface Science Laboratory, Department of Materials and Earth Sciences, Technical University of Darmstadt, Otto-Berndt-Strasse 3, Darmstadt 64287, Germany
| | - Jan P. Hofmann
- Surface Science Laboratory, Department of Materials and Earth Sciences, Technical University of Darmstadt, Otto-Berndt-Strasse 3, Darmstadt 64287, Germany
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18
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Salmanion M, Nandy S, Chae KH, Najafpour MM. Further Insight into the Conversion of a Ni-Fe Metal-Organic Framework during Water-Oxidation Reaction. Inorg Chem 2022; 61:5112-5123. [PMID: 35297622 DOI: 10.1021/acs.inorgchem.2c00241] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Metal-organic frameworks (MOFs) are extensively investigated as catalysts in the oxygen-evolution reaction (OER). A Ni-Fe MOF with 2,5-dihydroxy terephthalate as a linker has been claimed to be among the most efficient catalysts for the oxygen-evolution reaction (OER) under alkaline conditions. Herein, the MOF stability under the OER was reinvestigated by electrochemical methods, X-ray diffraction, X-ray absorption spectroscopy, energy-dispersive spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy, nuclear magnetic resonance, operando visible spectroscopy, electrospray ionization mass spectroscopy, and Raman spectroscopy. The peaks corresponding to the carboxylate group are observed at 1420 and 1520 cm-1 using Raman spectroscopy. The peaks disappear after the reaction, suggesting the removal of the carboxylate group. A drop in carbon content but growth in oxygen content after the OER was detected by energy-dispersive spectra. This shows that after the OER, the surface of MOF is oxidized. SEM images also show deep restructures in the surface morphology of this Ni-Fe MOF after the OER. Nuclear magnetic resonance and electrospray ionization mass spectrometry show the decomposition of the linker in alkaline conditions and even in the absence of potential. These experimental data indicate that during the OER, the synthesized MOF transforms to a Fe-Ni-layered double hydroxide, and the formed metal oxide is a candidate for the OER catalysis. Generalization is not true; however, taken together, these findings suggest that the stability of Ni-Fe MOFs under harsh oxidation conditions should be reconsidered.
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Affiliation(s)
- Mahya Salmanion
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Subhajit Nandy
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Keun Hwa Chae
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Mohammad Mahdi Najafpour
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran.,Center of Climate Change and Global Warming, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran.,Research Center for Basic Sciences & Modern Technologies (RBST), Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
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19
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Sur A, Jernigan NB, Powers DC. Kinetic Probes of the Origin of Activity in MOF-Based C–H Oxidation Catalysis. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05415] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Aishanee Sur
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Nicholas B. Jernigan
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - David C. Powers
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
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20
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Akbari MSA, Zand Z, Aleshkevych P, Jagličić Z, Najafpour MM. Finding the True Catalyst for Water Oxidation at Low Overpotential in the Presence of a Metal Complex. Inorg Chem 2022; 61:3801-3810. [PMID: 35179022 DOI: 10.1021/acs.inorgchem.2c00111] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The design of molecular-based catalysts for oxygen-evolution reaction (OER) requires more investigations for the true catalyst to be found. First-row transition metal complexes are extensively investigated for OER, but the role of these metal complexes as a true catalyst is doubtful. Some doubts have been expressed about the role of first-row transition metal complexes for OER at high overpotentials (η > 450). Generally, the detection of the true catalyst has so far been focused on high overpotentials (η > 450) because at low overpotentials (η < 450), many methods are not sensitive enough to detect small amounts of heterogeneous catalysts on the electrode surface during the first seconds of the reaction. Ni(II) phthalocyanine-tetra sulfonate tetrasodium (1) is in moderate conditions (at 20-50 °C and pH 5-13) in the absence of electrochemical driving forces, which could make it noteworthy for OER. Herein, the results of OER in the presence of 1 at low overpotentials under alkaline conditions are presented. In addition, in the presence of Ni complexes, using an Fe ion is introduced as a new method for detecting Ni (hydr)oxide under OER. Our experiments indicate that in the presence of a homogeneous OER (pre)catalyst, a deep investigation is necessary to rule out the heterogeneous catalysts formed. Our approach is a roadmap in the field of catalysis to understand the OER mechanism in the presence of a molecular Ni-based catalyst design. Our results shown in this study are likely to open up new perspectives and discussion on many molecular catalysts in a considerable part of the chemistry community.
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Affiliation(s)
- Mohammad Saleh Ali Akbari
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Zahra Zand
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Pavlo Aleshkevych
- Institute of Physics, Polish Academy of Sciences, Warsaw 02-668, Poland
| | - Zvonko Jagličić
- Faculty of Civil and Geodetic Engineering & Institute of Mathematics, Physics, and Mechanics, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Mohammad Mahdi Najafpour
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran.,Center of Climate Change and Global Warming, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran.,Research Center for Basic Sciences & Modern Technologies (RBST), Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
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21
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Shimoyama Y, Ogiwara N, Weng Z, Uchida S. Oxygen Evolution Reaction Driven by Charge Transfer from a Cr Complex to Co-Containing Polyoxometalate in a Porous Ionic Crystal. J Am Chem Soc 2022; 144:2980-2986. [PMID: 35040654 DOI: 10.1021/jacs.1c10471] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Considerable efforts have been devoted to developing oxygen evolution reaction (OER) catalysts based on transition metal oxides. Polyoxometalates (POMs) can be regarded as model compounds of transition metal oxides, and cobalt-containing POMs (Co-POMs) have received significant interest as candidates. Nanocomposites based on Co-POMs have been reported to show high OER activities due to synergistic effects among the components; however, the role of each component is unclear due to its complex structure. Herein, we utilize porous ionic crystals (PICs) based on Co-POMs, which enable a composition-structure-function relationship to be established to understand the origin of the synergistic catalysis. Specifically, a Keggin-type POM [α-CoW12O40]6- and a Cr complex [Cr3O(OOCCH2CN)6(H2O)3]+ are implemented as PIC building blocks for the OER under nonbasic conditions. The potentially OER-active but highly soluble [α-CoW12O40]6- was successfully anchored in the crystalline PIC matrix via Coulomb interactions and hydrogen bonding induced by polar cyano groups of the Cr complex. The PIC exhibits efficient and sustained OER catalytic activity, while each building block is inactive. The Tafel slope of the linear sweep voltammetry curve and the relatively large kinetic isotope effect value suggest that elementary steps closely related to the OER rate involve single-electron and proton transfer reactions. Electrochemical and spectroscopic studies clearly show that the synergistic catalysis originates from the charge transfer from the Cr complex to [α-CoW12O40]6-; the increased electron density of [α-CoW12O40]6- may increase its basicity and accelerate proton abstraction as well as enhance electron transfer to stabilize the reaction intermediates adsorbed on [α-CoW12O40]6-.
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Affiliation(s)
- Yuto Shimoyama
- Department of Basic Science, School of Arts and Sciences, The University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8902, Japan
| | - Naoki Ogiwara
- Department of Basic Science, School of Arts and Sciences, The University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8902, Japan
| | - Zhewei Weng
- Department of Basic Science, School of Arts and Sciences, The University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8902, Japan
| | - Sayaka Uchida
- Department of Basic Science, School of Arts and Sciences, The University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8902, Japan
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22
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Valizadeh A, Bikas R, Nandy S, Lis T, Chae KH, Najafpour MM. Homogeneous or heterogeneous electrocatalysis: reinvestigation of a cobalt coordination compound for water oxidation. Dalton Trans 2021; 51:220-230. [PMID: 34881752 DOI: 10.1039/d1dt03036a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A cobalt coordination compound with azo-ligand linkers combined with linked bisulfonate moieties has been argued to be an efficient catalyst for the oxygen-evolution reaction (OER) (H.-T. Shi, X.-X. Li, F.-H. Wu and W.-B. Yu, Dalton Trans., 2017, 46, 16321.). In the previously published report, this cobalt compound (compound 1) was believed to display a high turnover frequency (5 s-1) at η = 720 mV at pH 9. Herein, the OER in the presence of compound 1 is reinvestigated. The nanosized oxide-based particles formed after the OER in the presence of compound 1 were tracked by electrochemical methods, scanning electron microscopy (SEM), energy dispersive spectrometry (EDX), X-ray diffraction studies (XRD), (High-resolution) transmission electron microscopy ((HR)TEM), Raman spectroscopy, X-ray absorption spectroscopy (XAS), and X-ray photoelectron spectroscopy (XPS). Based on these experiments, it is proposed that a candidate for the true catalyst of the OER in the presence of compound 1 is cobalt oxide. During the OER and using chronoamperometry, the oxidation state of Co ions for the formed Co oxide is (III), but after consecutive CVs the oxidation states of Co ions for the formed Co oxide are (II) and (III). The results shed new light on the role of Co oxide nanoparticles formed in the presence of this Co coordination compound during the OER. Our experimental data also show that for the OER in the presence of a homogeneous (pre)catalyst, careful analyses to find the role of metal oxides are necessary for informed progress. The present findings also might help to find the mechanism of the OER in the presence of coordination compounds.
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Affiliation(s)
- Amirreza Valizadeh
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran.
| | - Rahman Bikas
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, 34148-96818, Qazvin, Iran
| | - Subhajit Nandy
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Tadeusz Lis
- Faculty of Chemistry, University of Wroclaw, Joliot-Curie 14, Wroclaw 50-383, Poland
| | - Keun Hwa Chae
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Mohammad Mahdi Najafpour
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran. .,Center of Climate Change and Global Warming, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran.,Research Center for Basic Sciences & Modern Technologies (RBST), Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran
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23
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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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24
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Reith L, Triana CA, Pazoki F, Amiri M, Nyman M, Patzke GR. Unraveling Nanoscale Cobalt Oxide Catalysts for the Oxygen Evolution Reaction: Maximum Performance, Minimum Effort. J Am Chem Soc 2021; 143:15022-15038. [PMID: 34499506 DOI: 10.1021/jacs.1c03375] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The oxygen evolution reaction (OER) is a key bottleneck step of artificial photosynthesis and an essential topic in renewable energy research. Therefore, stable, efficient, and economical water oxidation catalysts (WOCs) are in high demand and cobalt-based nanomaterials are promising targets. Herein, we tackle two key open questions after decades of research into cobalt-assisted visible-light-driven water oxidation: What makes simple cobalt-based precipitates so highly active-and to what extent do we need Co-WOC design? Hence, we started from Co(NO3)2 to generate a precursor precipitate, which transforms into a highly active WOC during the photocatalytic process with a [Ru(bpy)3]2+/S2O82-/borate buffer standard assay that outperforms state of the art cobalt catalysts. The structural transformations of these nanosized Co catalysts were monitored with a wide range of characterization techniques. The results reveal that the precipitated catalyst does not fully change into an amorphous CoOx material but develops some crystalline features. The transition from the precipitate into a disordered Co3O4 material proceeds within ca. 1 min, followed by further transformation into highly active disordered CoOOH within the first 10 min. Furthermore, under noncatalytic conditions, the precursor directly transforms into CoOOH. Moreover, fast precipitation and isolation afford a highly active precatalyst with an exceptional O2 yield of 91% for water oxidation with the visible-light-driven [Ru(bpy)3]2+/S2O82- assay, which outperforms a wide range of carefully designed Co-containing WOCs. We thus demonstrate that high-performance cobalt-based OER catalysts indeed emerge effortlessly from a self-optimization process favoring the formation of Co(III) centers in all-octahedral environments. This paves the way to new low-maintenance flow chemistry OER processes.
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Affiliation(s)
- Lukas Reith
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Carlos A Triana
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Faezeh Pazoki
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.,Chemical Engineering Department, University of Tehran, District 6, 16th Azar St., Enghelab Sq., Tehran 1417935840, Iran
| | - Mehran Amiri
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331-4003, United States
| | - May Nyman
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331-4003, United States
| | - Greta R Patzke
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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25
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Saund SS, Siegler MA, Thoi VS. Electrochemical Degradation of a Dicationic Rhenium Complex via Hoffman-Type Elimination. Inorg Chem 2021; 60:13011-13020. [PMID: 34492759 DOI: 10.1021/acs.inorgchem.1c01427] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Electrocatalytic reduction of carbon dioxide (CO2) by transition-metal catalysts is an attractive means for storing renewably sourced electricity in chemical bonds. Metal coordination compounds represent highly tunable platforms ideal for studying the fundamental stepwise transformations of CO2 into its reduced products. However, metal complexes can decompose upon extended electrolysis and form chemically distinct molecular species or, in some cases, catalytically active electrode deposits. Deciphering the degradative pathways is important for understanding the nature of the active catalyst and designing robust metal complexes for small-molecule activation. Herein, we present a new dicationic rhenium bipyridyl complex capable of multielectron ligand-centered reductions electrochemically. Our in-depth experimental and computational study provides mechanistic insight into an unusual reductively induced Hoffman-type elimination. We identify benzylic tertiary ammonium groups as an electrolytically susceptible moiety and propose key intermediates in the degradative pathway. This investigation highlights the complex interplay between the ligand and metal ion and will guide the future design of metal-organic catalysts.
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Affiliation(s)
- Simran S Saund
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Maxime A Siegler
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - V Sara Thoi
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States.,Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
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26
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Polyoxometalate based hybrid compound as a pre-catalyst for electrocatalytic water reduction at neutral pH. J CHEM SCI 2021. [DOI: 10.1007/s12039-021-01928-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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27
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Synthesis, X-ray structure, Hirshfeld analysis and DFT studies of Ni(II) complexes with pyridine-type ligands and monoanionic (SCN¯, N3¯ and NO3¯) ligands. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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28
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Rigodanza F, Marino N, Bonetto A, Marcomini A, Bonchio M, Natali M, Sartorel A. Water-Assisted Concerted Proton-Electron Transfer at Co(II)-Aquo Sites in Polyoxotungstates With Photogenerated Ru III (bpy) 33+ Oxidant. Chemphyschem 2021; 22:1208-1218. [PMID: 33851772 PMCID: PMC8251842 DOI: 10.1002/cphc.202100190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/13/2021] [Indexed: 02/06/2023]
Abstract
The cobalt substituted polyoxotungstate [Co6 (H2 O)2 (α-B-PW9 O34 )2 (PW6 O26 )]17- (Co6) displays fast electron transfer (ET) kinetics to photogenerated RuIII (bpy)33+ , 4 to 5 orders of magnitude faster than the corresponding ET observed for cobalt oxide nanoparticles. Mechanistic evidence has been acquired indicating that: (i) the one-electron oxidation of Co6 involves Co(II) aquo or Co(II) hydroxo groups (abbreviated as Co6(II)-OH2 and Co6(II)-OH, respectively, whose speciation in aqueous solution is associated to a pKa of 7.6), and generates a Co(III)-OH moiety (Co6(III)-OH), as proven by transient absorption spectroscopy; (ii) at pH>pKa , the Co6(II)-OH→RuIII (bpy)33+ ET occurs via bimolecular kinetics, with a rate constant k close to the diffusion limit and dependent on the ionic strength of the medium, consistent with reaction between charged species; (iii) at pH
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Affiliation(s)
- Francesco Rigodanza
- Department of Chemical SciencesUniversity of Padovavia Marzolo 135131PadovaItaly
- Consiglio Nazionale delle Ricerche (C.N.R.)Institute on Membrane Technology section of Padovavia Marzolo 135131PadovaItaly
| | - Nadia Marino
- Department of Chemistry and Chemical TechnologiesUniversity of Calabria87036Arcavacata di Rende (CS)Italy
| | - Alessandro Bonetto
- Dept. Environmental Sciences, Informatics and StatisticsUniversity Ca' Foscari Venice VegaparkVia delle Industrie 21/830175Marghera, VeniceItaly
| | - Antonio Marcomini
- Dept. Environmental Sciences, Informatics and StatisticsUniversity Ca' Foscari Venice VegaparkVia delle Industrie 21/830175Marghera, VeniceItaly
| | - Marcella Bonchio
- Department of Chemical SciencesUniversity of Padovavia Marzolo 135131PadovaItaly
- Consiglio Nazionale delle Ricerche (C.N.R.)Institute on Membrane Technology section of Padovavia Marzolo 135131PadovaItaly
| | - Mirco Natali
- Department of Chemical, Pharmaceutical and Agricultural Sciences (DOCPAS)University of Ferrara, and Centro Interuniversitario per la Conversione Chimica dell'Energia Solare (SOLARCHEM) sez. di Ferraravia L. Borsari 4644121FerraraItaly
| | - Andrea Sartorel
- Department of Chemical SciencesUniversity of Padovavia Marzolo 135131PadovaItaly
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29
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Challenges in transfer of gas-liquid reactions from batch to continuous operation: dimensional analysis and simulations for aerobic oxidation. J Flow Chem 2021. [DOI: 10.1007/s41981-021-00176-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
AbstractThe transfer of gas-liquid reactions from conventional batch processes into continuous operation using milli and micro reactors is claimed as an important step towards process intensification. Importantly, this transfer step should be realized in an early phase of process development, already, in order to minimize research efforts towards the undesired operation strategy. The main challenge of this approach, therefore, arises from lack of knowledge in the early stage of process development and the resulting system with high degrees of freedom. This contribution presents an approach to tackle this challenge by means of mathematical modelling and simulation for the aerobic oxidation of 9,10-dihydroanthracene (DHA) catalyzed by polyoxometalates (POMs) being used as example for gas-liquid reactions. The reaction was chosen as it provides sufficient complexity, since it consists of three consecutive oxidation steps of DHA and a parallel catalytic redox-cycle according to a Mars-van-Krevelen mechanism. It also provides the challenge of unknown reaction kinetics, which have been estimated in this contribution. The dimensionless balance equations for reactor modeling are derived and parametrized based on early stage experimental results obtained in batch operation mode. The discrimination between batch and continuous operation was performed by means of characteristic dimensionless numbers using the identical mathematical model for comparability reasons. The model was used to perform sensitivity studies with emphasis on the interplay between mass transfer characteristics and reaction kinetics for both the batch and continuous operation mode. The simulation results show that the performance of both operation modes mainly depend on the oxidation state of the POM catalyst, which is caused by the differences in oxygen availability. Therefore, results obtained in batch operation mode are prone to be masked by mass transfer issues, which affects catalyst and reactor development at the same time and may thus cause maldevelopments. With respect to process development it can thus be concluded that the transfer from batch to continuous operation together with mathematical modeling is important in an early phase, already, in order to detect limitations misleading the development. Finally, even simple models with roughly estimated parameters from preliminary experiments are shown to be sufficient in the early phase and can systematically be improved, in the subsequent phases.
Graphical abstract
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30
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Research Progress on Catalytic Water Splitting Based on Polyoxometalate/Semiconductor Composites. Catalysts 2021. [DOI: 10.3390/catal11040524] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In recent years, due to the impact of global warming, environmental pollution, and the energy crisis, international attention and demand for clean energy are increasing. Hydrogen energy is recognized as one of the clean energy sources. Water is considered as the largest potential supplier of hydrogen energy. However, artificial catalytic water splitting for hydrogen and oxygen evolution has not been widely used due to its high energy consumption and high cost during catalytic cracking. Therefore, the exploitation of photocatalysts, electrocatalysts, and photo-electrocatalysts for rapid, cost effective, and reliable water splitting is essentially needed. Polyoxometalates (POMs) are regarded as the potential candidates for water splitting catalysis. In addition to their excellent catalytic properties and reversibly redox activities, POMs can also modify semiconductors to overcome their shortcomings, and improve photoelectric conversion efficiency and photocatalytic activity, which has attracted more and more attention in the field of photoelectric water splitting catalysis. In this review, we summarize the latest applications of POMs and semiconductor composites in the field of photo-electrocatalysis (PEC) for hydrogen and oxygen evolution by catalytic water splitting in recent years and take the latest applications of POMs and semiconductor composites in photocatalysis for water splitting. In the conclusion section, the challenges and strategies of photocatalytic and PEC water-splitting by POMs and semiconductor composites are discussed.
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31
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Amini M, Mousazade Y, Zand Z, Bagherzadeh M, Najafpour MM. Ultra-small and highly dispersive iron oxide hydroxide as an efficient catalyst for oxidation reactions: a Swiss-army-knife catalyst. Sci Rep 2021; 11:6642. [PMID: 33758240 PMCID: PMC7988159 DOI: 10.1038/s41598-021-85672-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 03/04/2021] [Indexed: 11/09/2022] Open
Abstract
Ultra-small and highly dispersive (< 10 nm) iron oxide hydroxide is characterized by some methods. The compound is an efficient and stable catalyst for alcohol oxidation, organic sulfide oxidation, and epoxidation of alkenes in the presence of H2O2. The electrochemical oxygen-evolution reaction of the iron oxide hydroxide is also tested under acidic, neutral, and alkaline conditions. In the presence of the iron oxide hydroxide, excellent conversions (75–100%) and selectivities of substrates (92–97%), depending on the nature of the sulfide, were obtained. Benzylalcohols having electron-donating and-withdrawing substituents in the aromatic ring were oxidized to produce the corresponding aldehydes with excellent conversion (65–89%) and selectivity (96–100%) using this iron oxide hydroxide. The conversion of styrene and cyclooctene toward the epoxidation in the presence of this catalyst are 60 and 53%, respectively. Water oxidation for the catalysts was investigated at pH 2, 6.7, 12, and 14. The onset of OER at pH 14 is observed with a 475 mV overpotential. At 585 mV overpotential, a current density of more than 0.18 mA/cm2 and a turnover frequency of 1.5/h is observed. Operando high-resolution visible spectroscopy at pH 14, similar to previously reported investigations, shows that Fe(IV)=O is an intermediate for water oxidation.
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Affiliation(s)
- Mojtaba Amini
- Department of Chemistry, Faculty of Science, University of Maragheh, Golshahr, P.O. Box. 55181-83111731, Maragheh, Iran. .,Department of Inorganic Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran.
| | - Younes Mousazade
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran
| | - Zahra Zand
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran
| | - Mojtaba Bagherzadeh
- Chemistry Department, Sharif University of Technology, P.O. Box 11155-3615, Tehran, Iran
| | - Mohammad Mahdi Najafpour
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran. .,Center of Climate Change and Global Warming, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran. .,Research Center for Basic Sciences and Modern Technologies (RBST), Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran.
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32
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Haider A, Bassil BS, Lin Z, Ma X, Haferl PJ, Bindra JK, Kinyon J, Zhang G, Keita B, Dalal NS, Kortz U. Synthesis, structure, electrochemistry and magnetism of cobalt-, nickel- and zinc-containing [M 4(OH) 3(H 2O) 2(α-SiW 10O 36.5) 2] 13- (M = Co 2+, Ni 2+, and Zn 2+). Dalton Trans 2021; 50:3923-3930. [PMID: 33635298 DOI: 10.1039/d0dt03392h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Interaction of the trilacunary 9-tungstosilicate [A-α-SiW9O34]10- with cobalt(ii), nickel(ii) and zinc(ii) ions in pH 9 aqueous medium at room temperature led to the formation of the respective M4-containing heteropolytungstates [M4(OH)3(H2O)2(α-SiW10O36.5)2]13- (M = Co2+ (1), Ni2+ (2), and Zn2+ (3)). Polyanions 1-3 were characterized in the solid state by single-crystal XRD, FT-IR spectroscopy, and thermogravimetric and elemental analyses. Electrochemical studies showed that the Co2+ ions in 1 can be oxidized to Co3+ and the CVs of the WVI centers of the polyanions feature well-defined and chemically reversible reduction waves. Magnetic measurements on 1 and 2 showed paramagnetism with complex ferromagnetic and antiferromagnetic interactions. A model was presented for extracting the exchange constants for the magnetic exchange interaction.
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Affiliation(s)
- Ali Haider
- Jacobs University, Department of Life Sciences and Chemistry, Campus Ring 1, 28759 Bremen, Germany.
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33
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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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34
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Shepelenko KE, Soliev SB, Galushko AS, Chernyshev VM, Ananikov VP. Different effects of metal-NHC bond cleavage on the Pd/NHC and Ni/NHC catalyzed α-arylation of ketones with aryl halides. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01411g] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Fundamental differences in the behavior of Pd/NHC and Ni/NHC catalytic systems in ketones α-arylation were elucidated and exploited.
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Affiliation(s)
| | | | - Alexey S. Galushko
- Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russia
| | | | - Valentine P. Ananikov
- Platov South-Russian State Polytechnic University (NPI)
- Russia
- Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
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35
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Chernyshev VM, Denisova EA, Eremin DB, Ananikov VP. The key role of R-NHC coupling (R = C, H, heteroatom) and M-NHC bond cleavage in the evolution of M/NHC complexes and formation of catalytically active species. Chem Sci 2020; 11:6957-6977. [PMID: 33133486 PMCID: PMC7553045 DOI: 10.1039/d0sc02629h] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 06/19/2020] [Indexed: 02/01/2023] Open
Abstract
Complexes of metals with N-heterocyclic carbene ligands (M/NHC) are typically considered the systems of choice in homogeneous catalysis due to their stable metal-ligand framework. However, it becomes obvious that even metal species with a strong M-NHC bond can undergo evolution in catalytic systems, and processes of M-NHC bond cleavage are common for different metals and NHC ligands. This review is focused on the main types of the M-NHC bond cleavage reactions and their impact on activity and stability of M/NHC catalytic systems. For the first time, we consider these processes in terms of NHC-connected and NHC-disconnected active species derived from M/NHC precatalysts and classify them as fundamentally different types of catalysts. Problems of rational catalyst design and sustainability issues are discussed in the context of the two different types of M/NHC catalysis mechanisms.
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Affiliation(s)
- Victor M Chernyshev
- Platov South-Russian State Polytechnic University (NPI) , Prosveschenya 132 , Novocherkassk , 346428 , Russia
| | - Ekaterina A Denisova
- N. D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , Leninsky Prospect 47 , 119991 Moscow , Russian Federation
| | - Dmitry B Eremin
- N. D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , Leninsky Prospect 47 , 119991 Moscow , Russian Federation
- The Bridge@USC , University of Southern California , 1002 Childs Way , Los Angeles , California 90089-3502 , USA
| | - Valentine P Ananikov
- Platov South-Russian State Polytechnic University (NPI) , Prosveschenya 132 , Novocherkassk , 346428 , Russia
- N. D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , Leninsky Prospect 47 , 119991 Moscow , Russian Federation
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36
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Konishi T, Kodani K, Hasegawa T, Ogo S, Guo SX, Boas JF, Zhang J, Bond AM, Ueda T. Impact of the Lithium Cation on the Voltammetry and Spectroscopy of [XVM 11O 40] n- (X = P, As ( n = 4), S ( n = 3); M = Mo, W): Influence of Charge and Addenda and Hetero Atoms. Inorg Chem 2020; 59:10522-10531. [PMID: 32786655 DOI: 10.1021/acs.inorgchem.0c00876] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Polyoxometalates (POMs) have been proposed as electromaterials for lithium-based batteries because they provide access to multiple electron transfer reactions coupled to fast lithium ion transport processes and high stability over many redox cycles. Consequently, knowledge of reversible potentials and Li+ cation-POM anion interactions provides a strategic basis for their further development. In this study, detailed cyclic voltammetric studies of a series of [XVVM11O40]n- (XVM11n-) POMs (where X (heteroatom) = P (n = 4), As (n = 4), and S (n = 3) and M (addenda atom) = Mo, W) have been undertaken in CH3CN in the presence of LiClO4, with n-Bu4NPF6 also present when required to keep the ionic strength close to constant value of 0.1 M. An analysis of the data has allowed the impact of the POM charge, and addenda and hetero atoms on the reversible potentials and the interaction between Li+ and the oxidized XVVM11n- and reduced XVIVM11(n+1)- forms of the VV/IV redox couple to be determined. The SVV/IVM113-/4- process is independent of the Li+ concentration, implying the absence of the association of this cation with either SVVM113- or SVIVM114- redox levels. However, lithium-ion association constants for both VV and VIV redox levels were obtained from a comparison of simulated and experimental cyclic voltammograms for the reduction of the more negatively charged XVVM114- (X = P, As; M = Mo, W), since the Li+ interaction with these more negatively charged POMs is much stronger. The interaction between Li+ and the oxidized, XVVM11n-, and reduced, XVIVM11(n+1)-, forms was also investigated by 51V NMR and EPR spectroscopy, respectively, and it was confirmed that, due to their lower charge density, SVVM113- and SVIVM114- interact significantly less strongly with the lithium ion than XVVM114- and XVIVM115- (X = P, As). The lithium-POM association constants are substantially smaller than the corresponding proton association constants reported previously, which is attributed to a smaller surface charge density. The much stronger impact of Li+ on the WVI/V- and MoVI/V-based reductions that occur at more negative potentials than the VV/IV process also has been qualitatively evaluated.
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Affiliation(s)
- Toru Konishi
- Department of Applied Science, Faculty of Science, Kochi University, Kochi 780-8520, Japan
| | - Keisuke Kodani
- Department of Applied Science, Faculty of Science, Kochi University, Kochi 780-8520, Japan
| | - Takuya Hasegawa
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Sendai, Miyagi 980-8577, Japan
| | - Shuhei Ogo
- Department of Marine Resources Science, Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Kochi 783-8502, Japan
| | - Si-Xuan Guo
- School of Chemistry, and ARC Centre of Excellence for Electromaterials Science, Monash University, Clayton, Victoria 3800, Australia
| | - John F Boas
- School of Physics and Astronomy, Monash University, Clayton, Victoria 3800, Australia
| | - Jie Zhang
- School of Chemistry, and ARC Centre of Excellence for Electromaterials Science, Monash University, Clayton, Victoria 3800, Australia
| | - Alan M Bond
- School of Chemistry, and ARC Centre of Excellence for Electromaterials Science, Monash University, Clayton, Victoria 3800, Australia
| | - Tadaharu Ueda
- Department of Marine Resources Science, Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Kochi 783-8502, Japan.,Center for Advanced Marine Core Research, Kochi University, Nankoku, Kochi 783-8502, Japan
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37
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Buru CT, Farha OK. Strategies for Incorporating Catalytically Active Polyoxometalates in Metal-Organic Frameworks for Organic Transformations. ACS APPLIED MATERIALS & INTERFACES 2020; 12:5345-5360. [PMID: 31961127 DOI: 10.1021/acsami.9b19785] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Polyoxometalates (POMs) can benefit from immobilization on solid supports to overcome their difficulty in processability and stability. Among the reported solid supports, metal-organic frameworks (MOFs) offer a crystalline, versatile platform for depositing highly active POMs. The combination of these structures can at times benefit from the combined reactivity of both the POM and MOF, sometimes synergistically, to improve catalysis while balancing desirable properties like porosity, substrate diffusion, or stability. In this Review, we survey the strategies for immobilizing POMs within MOF structures, with an emphasis on how physical and catalytic properties of the parent materials are affected in the composite when employed in organic transformations.
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Affiliation(s)
- Cassandra T Buru
- International Institute of Nanotechnology and Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
| | - Omar K Farha
- International Institute of Nanotechnology and Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
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38
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Younus HA, Ahmad N, Yildiz I, Zhuiykov S, Zhang S, Verpoort F. Ligand photodissociation in Ru(ii)–1,4,7-triazacyclononane complexes enhances water oxidation and enables electrochemical generation of surface active species. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02575h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Ligand transformations involved in metal complexes during water oxidation (WO), such as ligand decomposition, partial oxidation, or complete dissociation have been reported, however, ligand photodissociation has not been reported yet.
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Affiliation(s)
- Hussein A. Younus
- College of Materials Science and Engineering
- Hunan University
- Changsha 410082
- P. R. China
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
| | - Nazir Ahmad
- Department of Chemistry
- G. C. University Lahore
- Pakistan
| | - Ibrahim Yildiz
- College of Arts and Sciences
- Khalifa University of Science and Technology
- Abu Dhabi 127788
- United Arab Emirates
| | - Serge Zhuiykov
- Ghent University Global Campus
- Incheon 406-840
- South Korea
| | - Shiguo Zhang
- College of Materials Science and Engineering
- Hunan University
- Changsha 410082
- P. R. China
| | - Francis Verpoort
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- China
- Ghent University Global Campus
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39
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Gärtner D, Sandl S, Jacobi von Wangelin A. Homogeneous vs. heterogeneous: mechanistic insights into iron group metal-catalyzed reductions from poisoning experiments. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00644k] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Iron group catalysts constitute a promising alternative to well-established noble metal catalysts in reduction reactions. This review advocates the use of kinetic poisoning experiments to distinguish between homotopic and heterotopic mechanisms.
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40
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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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41
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Gumerova NI, Rompel A. Polyoxometalates in solution: speciation under spotlight. Chem Soc Rev 2020; 49:7568-7601. [DOI: 10.1039/d0cs00392a] [Citation(s) in RCA: 111] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The review covers stability and transformations of classical polyoxometalates in aqueous solutions and provides their ion-distribution diagrams over a wide pH range.
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Affiliation(s)
- Nadiia I. Gumerova
- Universität Wien
- Fakultät für Chemie
- Institut für Biophysikalische Chemie
- 1090 Vienna
- Austria
| | - Annette Rompel
- Universität Wien
- Fakultät für Chemie
- Institut für Biophysikalische Chemie
- 1090 Vienna
- Austria
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Sarvi B, Hosseini SM, Deljoo B, El-Sawy A, Shirazi Amin A, Aindow M, Suib SL, Najafpour MM. New findings and current controversies in the reaction of ruthenium red and ammonium cerium( iv) nitrate: focus on the precipitated compound. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02499a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
During water-oxidation reaction in the presence of RuR and CAN, a heterogeneous nano-sized Ru-Ce compound is detected, which is formed by the interaction of [(NH3)5RuORu(NH3)4ORu(NH3)5],6+/7+ nitrate ions, and the products of the reduction of CAN.
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Affiliation(s)
- Bahram Sarvi
- Department of Chemistry
- Institute for Advanced Studies in Basic Science (IASBS)
- Zanjan
- Iran
| | | | - Bahareh Deljoo
- Institute of Materials Science
- University of Connecticut
- Storrs
- USA
- Department of Materials Science and Engineering
| | | | | | - Mark Aindow
- Institute of Materials Science
- University of Connecticut
- Storrs
- USA
- Department of Materials Science and Engineering
| | - Steven L. Suib
- Institute of Materials Science
- University of Connecticut
- Storrs
- USA
- Department of Materials Science and Engineering
| | - Mohammad Mahdi Najafpour
- Department of Chemistry
- Institute for Advanced Studies in Basic Science (IASBS)
- Zanjan
- Iran
- Center of Climate Change and Global Warming
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43
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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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Paille G, Gomez-Mingot M, Roch-Marchal C, Haouas M, Benseghir Y, Pino T, Ha-Thi MH, Landrot G, Mialane P, Fontecave M, Dolbecq A, Mellot-Draznieks C. Thin Films of Fully Noble Metal-Free POM@MOF for Photocatalytic Water Oxidation. ACS APPLIED MATERIALS & INTERFACES 2019; 11:47837-47845. [PMID: 31773948 DOI: 10.1021/acsami.9b13121] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
P2W18Co4@MOF-545, which contains the sandwich-type polyoxometalate (POM) [(PW9O34)2Co4(H2O)2]10- (P2W18Co4) immobilized in the porphyrinic metal-organic framework (MOF), MOF-545, is a "three-in-one" (porosity + light capture + catalysis) heterogeneous photosystem for the oxygen-evolution reaction (OER). Thin films of this composite were synthesized on transparent and conductive indium tin oxide (ITO) supports using electrophoretic (EP) or drop-casting (DC) methods, thus providing easy-to-use devices. Their electro- and photocatalytic activities for OER were investigated. Remarkably, both types of films exhibit higher turnover numbers (TONs) than the original bulk material previously studied as a suspension for the photocatalytic OER, with TONs after 2 h equal to 1600 and 403 for DC and EP films, respectively, compared to 70 for the suspension. This difference of catalytic activities is related to the proportion of efficiently illuminated crystallites, whereby a DC thin film offers the largest proportion of POM@MOF crystallites exposed to light due to its lower thickness when compared to an EP film or crystals in suspension. Such devices can be easily recycled by simply removing them from the reaction medium and washing them before reuse. The films were fully characterized with extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) spectroscopies, Raman, scanning electron microscopy, and electrochemistry before and after catalysis. The combination of all of these techniques shows the stability of both the POM and the MOF within the composite upon water-oxidation reaction.
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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 , 78035 Versailles Cedex, France
- Laboratoire de Chimie des Processus Biologiques, Collège de France , Sorbonne Université, CNRS UMR 8229, PSL Research University , 11 Place Marcelin Berthelot , 75231 Paris Cedex 05, France
| | - Maria Gomez-Mingot
- Laboratoire de Chimie des Processus Biologiques, Collège de France , Sorbonne Université, CNRS UMR 8229, PSL Research University , 11 Place Marcelin Berthelot , 75231 Paris 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 , 78035 Versailles Cedex, France
| | - Mohamed Haouas
- Institut Lavoisier de Versailles , UMR CNRS 8180, Université de Versailles Saint-Quentin en Yvelines, Université Paris-Saclay , 45 Avenue des Etats-Unis , 78035 Versailles Cedex, France
| | - Youven Benseghir
- Institut Lavoisier de Versailles , UMR CNRS 8180, Université de Versailles Saint-Quentin en Yvelines, Université Paris-Saclay , 45 Avenue des Etats-Unis , 78035 Versailles Cedex, France
- Laboratoire de Chimie des Processus Biologiques, Collège de France , Sorbonne Université, CNRS UMR 8229, PSL Research University , 11 Place Marcelin Berthelot , 75231 Paris Cedex 05, France
| | - Thomas Pino
- Institut des Sciences Moléculaires d'Orsay , CNRS, Université Paris-Sud, Université Paris-Saclay , F-91405 Orsay , France
| | - Minh-Huong Ha-Thi
- Institut des Sciences Moléculaires d'Orsay , CNRS, Université Paris-Sud, Université Paris-Saclay , F-91405 Orsay , France
| | - Gautier Landrot
- Synchrotron Soleil, l'Orme des Merisiers , Saint-Aubin, 91192 Gif-sur-Yvette 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 , 78035 Versailles Cedex, France
| | - Marc Fontecave
- Laboratoire de Chimie des Processus Biologiques, Collège de France , Sorbonne Université, CNRS UMR 8229, PSL Research University , 11 Place Marcelin Berthelot , 75231 Paris 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 , 78035 Versailles Cedex, France
| | - Caroline Mellot-Draznieks
- Laboratoire de Chimie des Processus Biologiques, Collège de France , Sorbonne Université, CNRS UMR 8229, PSL Research University , 11 Place Marcelin Berthelot , 75231 Paris Cedex 05, France
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McCarthy BD, Beiler AM, Johnson BA, Liseev T, Castner AT, Ott S. Analysis of Electrocatalytic Metal-Organic Frameworks. Coord Chem Rev 2019; 406. [PMID: 32499663 DOI: 10.1016/j.ccr.2019.213137] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The electrochemical analysis of molecular catalysts for the conversion of bulk feedstocks into energy-rich clean fuels has seen dramatic advances in the last decade. More recently, increased attention has focused on the characterization of metal-organic frameworks (MOFs) containing well-defined redox and catalytically active sites, with the overall goal to develop structurally stable materials that are industrially relevant for large-scale solar fuel syntheses. Successful electrochemical analysis of such materials draws heavily on well-established homogeneous techniques, yet the nature of solid materials presents additional challenges. In this tutorial-style review, we cover the basics of electrochemical analysis of electroactive MOFs, including considerations of bulk stability, methods of attaching MOFs to electrodes, interpreting fundamental electrochemical data, and finally electrocatalytic kinetic characterization. We conclude with a perspective of some of the prospects and challenges in the field of electrocatalytic MOFs.
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Affiliation(s)
- Brian D McCarthy
- Department of Chemistry, Ångström Laboratory, Uppsala University, Box 523, 75120 Uppsala, Sweden
| | - Anna M Beiler
- Department of Chemistry, Ångström Laboratory, Uppsala University, Box 523, 75120 Uppsala, Sweden
| | - Ben A Johnson
- Department of Chemistry, Ångström Laboratory, Uppsala University, Box 523, 75120 Uppsala, Sweden
| | - Timofey Liseev
- Department of Chemistry, Ångström Laboratory, Uppsala University, Box 523, 75120 Uppsala, Sweden
| | - Ashleigh T Castner
- Department of Chemistry, Ångström Laboratory, Uppsala University, Box 523, 75120 Uppsala, Sweden
| | - Sascha Ott
- Department of Chemistry, Ångström Laboratory, Uppsala University, Box 523, 75120 Uppsala, Sweden
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Shilpa N, Nadeema A, Kurungot S. Glycine-Induced Electrodeposition of Nanostructured Cobalt Hydroxide: A Bifunctional Catalyst for Overall Water Splitting. CHEMSUSCHEM 2019; 12:5300-5309. [PMID: 31663670 DOI: 10.1002/cssc.201902323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 10/03/2019] [Indexed: 06/10/2023]
Abstract
Herein, an interconnected α-Co(OH)2 structure with a network-like architecture was used as a bifunctional electrocatalyst for the overall water splitting reaction in alkaline medium. The complexing ability of glycine with a transition metal was exploited to form [Co(gly)3 ]- dispersion at pH 10, which was used for the electrodeposition. High-resolution TEM, UV/Vis-diffuse reflectance spectroscopy, and X-ray photoelectron spectroscopy were used to confirm that the as-synthesized materials had an α-Co(OH)2 phase. The electrocatalytic oxygen and hydrogen evolution activity of the glycine-coordinated α-Co(OH)2 was found to be approximately 320 and 145 mV, respectively, at 10 mA cm-2 . The material required approximately 1.60 V (vs. reversible hydrogen electrode; RHE) to achieve the benchmark of 10 mA cm-2 for overall water splitting with a mass activity of approximately 63.7 A g-1 at 1.60 V (vs. RHE). The chronoamperometric response was measured to evidence the stability of the material for overall water splitting for up to 24 h. Characterization of the catalyst after the oxygen and hydrogen evolution reactions was performed by XPS and showed the presence of a CoII /CoIII oxidation state.
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Affiliation(s)
- Nagaraju Shilpa
- Physical and Materials Chemistry Division, Council of Scientific & Industrial Research-National Chemical Laboratory, Pune, 411008, India
| | - Ayasha Nadeema
- Physical and Materials Chemistry Division, Council of Scientific & Industrial Research-National Chemical Laboratory, Pune, 411008, India
| | - Sreekumar Kurungot
- Physical and Materials Chemistry Division, Council of Scientific & Industrial Research-National Chemical Laboratory, Pune, 411008, India
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47
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Jia Y, Sun S, Cui X, Wang X, Yang L. Enzyme-like catalysis of polyoxometalates for chemiluminescence: Application in ultrasensitive detection of H2O2 and blood glucose. Talanta 2019; 205:120139. [DOI: 10.1016/j.talanta.2019.120139] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 07/01/2019] [Accepted: 07/08/2019] [Indexed: 10/26/2022]
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48
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Singer Hobbs M, Sackville EV, Smith AJ, Edler KJ, Hintermair U. In Situ Monitoring of Nanoparticle Formation during Iridium‐Catalysed Oxygen Evolution by Real‐Time Small Angle X‐Ray Scattering. ChemCatChem 2019. [DOI: 10.1002/cctc.201901268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Maya Singer Hobbs
- Centre for Sustainable Chemical TechnologiesUniversity of Bath Claverton Down Bath BA2 7AY United Kingdom
| | - Emma V. Sackville
- Centre for Sustainable Chemical TechnologiesUniversity of Bath Claverton Down Bath BA2 7AY United Kingdom
| | - Andrew J. Smith
- Diamond Light Source, Diamond House Harwell Science and Innovation Campus Harwell, Didcot, Oxfordshire OX11 0DE United Kingdom
| | - Karen J. Edler
- Department of ChemistryUniversity of Bath Claverton Down Bath BA2 7AY United Kingdom
| | - Ulrich Hintermair
- Centre for Sustainable Chemical TechnologiesUniversity of Bath Claverton Down Bath BA2 7AY United Kingdom
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49
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Ni L, Güttinger R, Triana CA, Spingler B, Baldridge KK, Patzke GR. Pathways towards true catalysts: computational modelling and structural transformations of Zn-polyoxotungstates. Dalton Trans 2019; 48:13293-13304. [PMID: 31424066 DOI: 10.1039/c9dt03018b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Current catalysis undergoes a paradigm shift from molecular and heterogeneous realms towards new dynamic catalyst concepts. This calls for innovative strategies to understand the essential catalytic motifs and true catalysts emerging from oxidative transformation processes. Polyoxometalate (POM) clusters offer an inexhaustible reservoir for new noble metal-free catalysts and excellent model systems whose structure-activity relationships and mechanisms remain to be explored. Here, we first introduce a new {ZnnNa6-n(B-α-SbW9O33)2} (n = 3-6) catalyst family with remarkable tuning options of the Zn-based core structure and high activity in H2O2-assisted catalytic alcohol oxidation as a representative reaction. Next, high level solution-based computational modelling of the intermediates and transition states was carried out for [Zn6Cl6(SbW9O33)2]12- as a representative well-defined case. The results indicate a radical-based oxidation process with the involvement of tungsten and adjacent zinc metal centers. The {ZnnNa6-n(B-α-SbW9O33)2} series indeed efficiently catalyses alcohol oxidation via peroxotungstate intermediates, in agreement with strong spectroscopic support and other experimental evidence for the radical mechanism. Finally, the high performance of [Zn6Cl6(SbW9O33)2]12- was traced back to its transformation into a highly active and robust disordered Zn/W-POM catalyst. The atomic short-range structure of this resting pre-catalyst was elucidated by RMC modelling of the experimental W-L3 and Zn-K edge EXAFS spectra and supported with further analytical methods. We demonstrate that computational identification of the reactive sites combined with the analytical tracking of their dynamic transformations provides essential input to expedite cluster-based molecular catalyst design.
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Affiliation(s)
- Lubin Ni
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.
| | - Robin Güttinger
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.
| | - C A Triana
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.
| | - Bernhard Spingler
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland.
| | - Kim K Baldridge
- 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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50
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Bergmann A, Roldan Cuenya B. Operando Insights into Nanoparticle Transformations during Catalysis. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01831] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Arno Bergmann
- Department of Interface Science, Fritz-Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
| | - Beatriz Roldan Cuenya
- Department of Interface Science, Fritz-Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
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