1
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Seif-Eddine M, Cobb SJ, Dang Y, Abdiaziz K, Bajada MA, Reisner E, Roessler MM. Operando film-electrochemical EPR spectroscopy tracks radical intermediates in surface-immobilized catalysts. Nat Chem 2024; 16:1015-1023. [PMID: 38355827 DOI: 10.1038/s41557-024-01450-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 01/12/2024] [Indexed: 02/16/2024]
Abstract
The development of surface-immobilized molecular redox catalysts is an emerging research field with promising applications in sustainable chemistry. In electrocatalysis, paramagnetic species are often key intermediates in the mechanistic cycle but are inherently difficult to detect and follow by conventional in situ techniques. We report a new method, operando film-electrochemical electron paramagnetic resonance spectroscopy (FE-EPR), which enables mechanistic studies of surface-immobilized electrocatalysts. This technique enables radicals formed during redox reactions to be followed in real time under flow conditions, at room temperature and in aqueous solution. Detailed insight into surface-immobilized catalysts, as exemplified here through alcohol oxidation catalysis by a surface-immobilized nitroxide, is possible by detecting active-site paramagnetic species sensitively and quantitatively operando, thereby enabling resolution of the reaction kinetics. Our finding that the surface electron-transfer rate, which is of the same order of magnitude as the rate of catalysis (accessible from operando FE-EPR), limits catalytic efficiency has implications for the future design of better surface-immobilized catalysts.
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Affiliation(s)
- Maryam Seif-Eddine
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, UK
| | - Samuel J Cobb
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Yunfei Dang
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, UK
| | - Kaltum Abdiaziz
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, UK
- Max Planck Institute for Chemical Energy Conversion, Mülheim an der Ruhr, Germany
| | - Mark A Bajada
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Erwin Reisner
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Maxie M Roessler
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, UK.
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2
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Berardi S, Benazzi E, Marchini E, Cristino V, Argazzi R, Boaretto R, Gobbato T, Rigodanza F, Cerullo G, Bozzini B, Bonchio M, Prato M, Berger T, Caramori S. Role of Intragap States in Sensitized Sb-Doped Tin Oxide Photoanodes for Solar Fuels Production. ACS APPLIED MATERIALS & INTERFACES 2024; 16:27209-27223. [PMID: 38747220 DOI: 10.1021/acsami.3c18020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
In view of developing photoelectrosynthetic cells which are able to store solar energy in chemical bonds, water splitting is usually the reaction of choice when targeting hydrogen production. However, alternative approaches can be considered, aimed at substituting the anodic reaction of water oxidation with more commercially capitalizable oxidations. Among them, the production of bromine from bromide ions was investigated long back in the 1980s by Texas Instruments. Herein we present optimized perylene-diimide (PDI)-sensitized antimony-doped tin oxide (ATO) photoanodes enabling the photoinduced HBr splitting with >4 mA/cm2 photocurrent densities under 0.1 W/cm2 AM1.5G illumination and 91 ± 3% faradaic efficiencies for bromine production. These remarkable results, among the best currently reported for the photoelectrochemical Br- oxidation by dye sensitized photoanodes, are strongly related to the occupancy extent of ATO's intragap (IG) states, generated upon Sb-doping, as demonstrated by comparing their performances with PDI-sensitized analogues on both undoped SnO2- and TiO2-passivated ATO scaffolds by means of (spectro)electrochemistry and electrochemical impedance spectroscopy. The architecture of the ATO-PDI photoanodic assembly was further modified via the introduction of a molecular iridium-based water oxidation catalyst, thus proving the versatility of the proposed hybrid interfaces as photoanodic platforms for photoinduced oxidations in PEC devices.
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Affiliation(s)
- Serena Berardi
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Elisabetta Benazzi
- Department of Chemical Sciences, University of Padova, 35131 Padova, Italy
| | - Edoardo Marchini
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Vito Cristino
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Roberto Argazzi
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
- ISOF-CNR, c/o Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Rita Boaretto
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Thomas Gobbato
- Department of Chemical Sciences, University of Padova, 35131 Padova, Italy
| | | | - Giulio Cerullo
- Department of Physics, Politecnico di Milano, 20133 Milano, Italy
| | | | - Marcella Bonchio
- Department of Chemical Sciences, University of Padova, 35131 Padova, Italy
| | - Maurizio Prato
- Department of Chemical and Pharmaceutical Sciences, Center of Excellence for Nanostructured Materials, University of Trieste, 34127 Trieste, Italy
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), 20014 Donostia San Sebastián, Spain
| | - Thomas Berger
- Department of Chemistry and Physics of Materials, University of Salzburg, A-5020 Salzburg, Austria
| | - Stefano Caramori
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
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3
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Shee U, Sinha D, Mondal S, Rajak KK. Electrochemical water oxidation reaction by dinuclear Re(V) oxo complexes with a 1,4-benzoquinone core via the redox induced electron transfer (RIET) process. Dalton Trans 2024; 53:8254-8263. [PMID: 38656393 DOI: 10.1039/d4dt00057a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
We report two dinuclear rhenium(V) oxo complexes 1 and 2 types, [ReV(O)(Cl)3(L2-)ReV(O)(Cl)3][NBu4]2 (1, L2- = dianionic 2,5-dihydroxy 1,4-benzoquinone (DBQ2-)) and (2, L2- = dianionic chloranilic acid (CA2-) ligands), as a homogeneous electrocatalyst for water oxidation reactions in the acetonitrile-water mixture. The evolution of dioxygen gas at the anode was confirmed by a GC-TCD study. In controlled potential electrolysis (CPE), oxidation at 1.30 V (vs. Ag/AgCl) at neutral pH, 1 and 2 afforded 1+ [ReVI(O)(Cl)3(DBQ˙3-)ReVI(O)(Cl)3]- and 2+ [ReVI(O)(Cl)3(CA˙3-)ReVI(O)(Cl)3]- ions, respectively, via the redox induced electron transfer (RIET) process. Electrochemically generated species of 1+ and 2+ could be isolated in dry acetonitrile. 1+ and 2+ ions give strong EPR signals in fluid solution as well as under frozen glass conditions due to the [ReVI(O)(Cl)3(L˙3-)ReVI(O)(Cl)3]- ↔ [ReVI(O)(Cl)3(L2-)ReV(O)(Cl)3]- (where L2- = DBQ2- and CA2-) equilibrium. However, the continuation of the CPE study (1.30 V vs. Ag/AgCl) in the presence of acetonitrile-water mixture oxidised the in situ generated species of 1+ and 2+ to higher valent ReVIO species. These species (1+ and 2+) bound water through the water nucleophilic attack (WNA) to produce peroxide intermediate species of [ReV(OOH)(Cl)3(DBQ2-)ReV(OOH)(Cl)3] (A1) and [ReV(OOH)(Cl)3(CA2-)ReV(OOH)(Cl)3] (A2) for catalysts 1 and 2, respectively. Interestingly, A1 and A2 were authenticated and analysed by ESI mass spectrometry and infrared spectroscopy and were the active precursors of this water oxidation process. The extent of current generation under similar conditions suggested that complex 1 is superior to complex 2 for the water oxidation reaction. Notably, the maximum turnover frequency (TOFmax) of catalysts 1 and 2 were 2.1 and 1.6 s-1 at 0.27 V and 0.24 V over potential, respectively, which is very significant in WOR.
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Affiliation(s)
- Uday Shee
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata, 700032, India.
| | - Debopam Sinha
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata, 700032, India.
- Department of Chemistry, Vijaygarh Jyotish Ray College, Kolkata, 700032, India
| | - Sandip Mondal
- Department of Chemistry, Darjeeling Govt. College, Darjeeling, 734101, India.
| | - Kajal Krishna Rajak
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata, 700032, India.
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4
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Amthor S, Ranu K, Bellido CG, Salomón FF, Piccioni A, Mazzaro R, Boscherini F, Pasquini L, Gil-Sepulcre M, Llobet A. Robust Molecular Anodes for Electrocatalytic Water Oxidation Based on Electropolymerized Molecular Cu Complexes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2308392. [PMID: 37814460 DOI: 10.1002/adma.202308392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/17/2023] [Indexed: 10/11/2023]
Abstract
A multistep synthesis of a new tetra-amidate macrocyclic ligand functionalized with alkyl-thiophene moieties, 15,15-bis(6-(thiophen-3-yl)hexyl)-8,13-dihydro-5H-dibenzo[b,h][1,4,7,10]tetraazacyclotridecine-6,7,14,16(15H,17H)-tetraone, H4 L, is reported. The reaction of the deprotonated ligand, L4- , and Cu(II) generates the complex [LCu]2- , that can be further oxidized to Cu(III) with iodine to generate [LCu]- . The H4 L ligand and their Cu complexes have been thoroughly characterized by analytic and spectroscopic techniques (including X-ray Absorption Spectroscopy, XAS). Under oxidative conditions, the thiophene group of [LCu]2- complex polymerizes on the surface of graphitic electrodes (glassy carbon disks (GC), glassy carbon plates (GCp ), carbon nanotubes (CNT), or graphite felts (GF)) generating highly stable thin films. With CNTs deposited on a GC by drop casting, hybrid molecular materials labeled as GC/CNT@p-[LCu]2- are obtained. The latter are characterized by electrochemical techniques that show their capacity to electrocatalytically oxidize water to dioxygen at neutral pH. These new molecular anodes achieve current densities in the range of 0.4 mA cm-2 at 1.30 V versus NHE with an onset overpotential at ≈250 mV. Bulk electrolysis experiments show an excellent stability achieving TONs in the range of 7600 during 24 h with no apparent loss of catalytic activity and maintaining the molecular catalyst integrity, as evidenced by electrochemical techniques and XAS spectroscopy.
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Affiliation(s)
- Sebastian Amthor
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avinguda Països Catalans 16, Tarragona, 43007, Spain
| | - Koushik Ranu
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avinguda Països Catalans 16, Tarragona, 43007, Spain
| | - Carlos G Bellido
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avinguda Països Catalans 16, Tarragona, 43007, Spain
| | - Fernando F Salomón
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avinguda Països Catalans 16, Tarragona, 43007, Spain
| | - Alberto Piccioni
- Department of Physics and Astronomy, Alma Mater Studiorum - Università di Bologna, viale C. Berti Pichat 6/2, Bologna, 40127, Italy
| | - Raffaello Mazzaro
- Department of Physics and Astronomy, Alma Mater Studiorum - Università di Bologna, viale C. Berti Pichat 6/2, Bologna, 40127, Italy
| | - Federico Boscherini
- Department of Physics and Astronomy, Alma Mater Studiorum - Università di Bologna, viale C. Berti Pichat 6/2, Bologna, 40127, Italy
| | - Luca Pasquini
- Department of Physics and Astronomy, Alma Mater Studiorum - Università di Bologna, viale C. Berti Pichat 6/2, Bologna, 40127, Italy
| | - Marcos Gil-Sepulcre
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avinguda Països Catalans 16, Tarragona, 43007, Spain
| | - Antoni Llobet
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avinguda Països Catalans 16, Tarragona, 43007, Spain
- Departament de Química, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Barcelona, 08193, Spain
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5
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Comini N, Diulus JT, Parkinson GS, Osterwalder J, Novotny Z. Stability of Iridium Single Atoms on Fe 3O 4(001) in the mbar Pressure Range. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:19097-19106. [PMID: 37791099 PMCID: PMC10544020 DOI: 10.1021/acs.jpcc.3c03097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 08/24/2023] [Indexed: 10/05/2023]
Abstract
Stable single metal adatoms on oxide surfaces are of great interest for future applications in the field of catalysis. We studied iridium single atoms (Ir1) supported on a Fe3O4(001) single crystal, a model system previously only studied in ultra-high vacuum, to explore their behavior upon exposure to several gases in the millibar range (up to 20 mbar) utilizing ambient-pressure X-ray photoelectron spectroscopy. The Ir1 single adatoms appear stable upon exposure to a variety of common gases at room temperature, including oxygen (O2), hydrogen (H2), nitrogen (N2), carbon monoxide (CO), argon (Ar), and water vapor. Changes in the Ir 4f binding energy suggest that Ir1 interacts not only with adsorbed and dissociated molecules but also with water/OH groups and adventitious carbon species deposited inevitably under these pressure conditions. At higher temperatures (473 K), iridium adatom encapsulation takes place in an oxidizing environment (a partial O2 pressure of 0.1 mbar). We attribute this phenomenon to magnetite growth caused by the enhanced diffusion of iron cations near the surface. These findings provide an initial understanding of the behavior of single atoms on metal oxides outside the UHV regime.
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Affiliation(s)
- Nicolo Comini
- Physik-Institut, Universität Zürich, Zürich CH-8057, Switzerland
- Swiss
Light Source, Paul Scherrer Institut, Villigen-PSI CH-5232, Switzerland
| | - J. Trey Diulus
- Physik-Institut, Universität Zürich, Zürich CH-8057, Switzerland
- Swiss
Light Source, Paul Scherrer Institut, Villigen-PSI CH-5232, Switzerland
| | | | - Jürg Osterwalder
- Physik-Institut, Universität Zürich, Zürich CH-8057, Switzerland
| | - Zbynek Novotny
- Physik-Institut, Universität Zürich, Zürich CH-8057, Switzerland
- Swiss
Light Source, Paul Scherrer Institut, Villigen-PSI CH-5232, Switzerland
- EMPA,
Laboratory for Joining Technologies and Corrosion, Swiss Federal Laboratories
for Materials, Dübendorf CH-8600, Switzerland
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6
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Wei XZ, Ding TY, Wang Y, Yang B, Yang QQ, Ye S, Tung CH, Wu LZ. Tracking an Fe V (O) Intermediate for Water Oxidation in Water. Angew Chem Int Ed Engl 2023; 62:e202308192. [PMID: 37431961 DOI: 10.1002/anie.202308192] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 07/07/2023] [Accepted: 07/10/2023] [Indexed: 07/12/2023]
Abstract
High-valent iron-oxo species are appealing for conducting O-O bond formation for water oxidation reactions. However, their high reactivity poses a great challenge to the dissection of their chemical transformations. Herein, we introduce an electron-rich and oxidation-resistant ligand, 2-[(2,2'-bipyridin)-6-yl]propan-2-ol to stabilize such fleeting intermediates. Advanced spectroscopies and electrochemical studies demonstrate a high-valent FeV (O) species formation in water. Combining kinetic and oxygen isotope labelling experiments and organic reactions indicates that the FeV (O) species is responsible for O-O bond formation via water nucleophilic attack under the real catalytic water oxidation conditions.
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Affiliation(s)
- Xiang-Zhu Wei
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Tian-Yu Ding
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yang Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Bing Yang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Qing-Qing Yang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Shengfa Ye
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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7
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Zhang H, Liu T, Dulock N, Williams BP, Wang Y, Chen B, Wikar H, Wang DZ, Brudvig GW, Wang D, Waegele MM. Atomically dispersed Ir catalysts exhibit support-dependent water oxidation kinetics during photocatalysis. Chem Sci 2023; 14:6601-6607. [PMID: 37350819 PMCID: PMC10283500 DOI: 10.1039/d3sc00603d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 05/25/2023] [Indexed: 06/24/2023] Open
Abstract
Heterogeneous water oxidation catalysis is central to the development of renewable energy technologies. Recent research has suggested that the reaction mechanisms are sensitive to the hole density at the active sites. However, these previous results were obtained on catalysts of different materials featuring distinct active sites, making it difficult to discriminate between competing explanations. Here, a comparison study based on heterogenized dinuclear Ir catalysts (Ir-DHC), which feature the same type of active site on different supports, is reported. The prototypical reaction was water oxidation triggered by pulsed irradiation of suspensions containing a light sensitizer, Ru(bpy)32+, and a sacrificial electron scavenger, S2O82-. It was found that at relatively low temperatures (288-298 K), the water oxidation activities of Ir-DHC on indium tin oxide (ITO) and CeO2 supports were comparable within the studied range of fluences (62-151 mW cm-2). By contrast, at higher temperatures (310-323 K), Ir-DHC on ITO exhibited a ca. 100% higher water oxidation activity than on CeO2. The divergent activities were attributed to the distinct abilities of the supporting substrates in redistributing holes. The differences were only apparent at relatively high temperatures when hole redistribution to the active site became a limiting factor. These findings highlight the critical role of the supporting substrate in determining the turnover at active sites of heterogeneous catalysts.
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Affiliation(s)
- Hongna Zhang
- Department of Chemistry, Boston College, Merkert Chemistry Center Chestnut Hill Massachusetts 02467 USA
| | - Tianying Liu
- Department of Chemistry, Boston College, Merkert Chemistry Center Chestnut Hill Massachusetts 02467 USA
| | - Nicholas Dulock
- Department of Chemistry, Boston College, Merkert Chemistry Center Chestnut Hill Massachusetts 02467 USA
| | - Benjamin P Williams
- Department of Chemistry, Boston College, Merkert Chemistry Center Chestnut Hill Massachusetts 02467 USA
| | - Yuanxing Wang
- Department of Chemistry, Boston College, Merkert Chemistry Center Chestnut Hill Massachusetts 02467 USA
| | - Boqiang Chen
- Department of Chemistry, Boston College, Merkert Chemistry Center Chestnut Hill Massachusetts 02467 USA
| | - Haden Wikar
- Department of Chemistry, Boston College, Merkert Chemistry Center Chestnut Hill Massachusetts 02467 USA
| | - David Z Wang
- Department of Chemistry, Boston College, Merkert Chemistry Center Chestnut Hill Massachusetts 02467 USA
| | - Gary W Brudvig
- Department of Chemistry and Yale Energy Sciences Institute, Yale University New Haven Connecticut 06520-8107 USA
| | - Dunwei Wang
- Department of Chemistry, Boston College, Merkert Chemistry Center Chestnut Hill Massachusetts 02467 USA
| | - Matthias M Waegele
- Department of Chemistry, Boston College, Merkert Chemistry Center Chestnut Hill Massachusetts 02467 USA
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8
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Jenewein KJ, Wang Y, Liu T, McDonald T, Zlatar M, Kulyk N, Benavente Llorente V, Kormányos A, Wang D, Cherevko S. Electrolyte Engineering Stabilizes Photoanodes Decorated with Molecular Catalysts. CHEMSUSCHEM 2023; 16:e202202319. [PMID: 36602840 DOI: 10.1002/cssc.202202319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/04/2023] [Indexed: 06/17/2023]
Abstract
Molecular catalysts are promising oxygen evolution promoters in conjunction with photoanodes for solar water splitting. Maintaining the stability of both photoabsorber and cocatalyst is still a prime challenge, with many efforts tackling this issue through sophisticated material designs. Such approaches often mask the importance of the electrode-electrolyte interface and overlook easily tunable system parameters, such as the electrolyte environment, to improve efficiency. We provide a systematic study on the activity-stability relationship of a prominent Fe2 O3 photoanode modified with Ir molecular catalysts using in situ mass spectroscopy. After gaining detailed insights into the dissolution behavior of the Ir cocatalyst, a comprehensive pH study is conducted to probe the impact of the electrolyte on the performance. An inverse trend in Fe and Ir stability is found, with the best activity-stability synergy obtained at pH 9.7. The results bring awareness to the overall photostability and electrolyte engineering when advancing catalysts for solar water splitting.
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Affiliation(s)
- Ken J Jenewein
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy IEK-11, Forschungszentrum Jülich GmbH, Cauerstrasse 1, 91058, Erlangen, Germany
- Department of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058, Erlangen, Germany
| | - Yuanxing Wang
- Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon St., Chestnut Hill, MA 02467, USA
| | - Tianying Liu
- Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon St., Chestnut Hill, MA 02467, USA
| | - Tara McDonald
- Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon St., Chestnut Hill, MA 02467, USA
| | - Matej Zlatar
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy IEK-11, Forschungszentrum Jülich GmbH, Cauerstrasse 1, 91058, Erlangen, Germany
- Department of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058, Erlangen, Germany
| | - Nadiia Kulyk
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy IEK-11, Forschungszentrum Jülich GmbH, Cauerstrasse 1, 91058, Erlangen, Germany
| | - Victoria Benavente Llorente
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy IEK-11, Forschungszentrum Jülich GmbH, Cauerstrasse 1, 91058, Erlangen, Germany
| | - Attila Kormányos
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy IEK-11, Forschungszentrum Jülich GmbH, Cauerstrasse 1, 91058, Erlangen, Germany
- Department of Physical Chemistry and Materials Science, Interdisciplinary Excellence Centre, University of Szeged, Aradi Square 1, Szeged, H-6720, Hungary
| | - Dunwei Wang
- Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon St., Chestnut Hill, MA 02467, USA
| | - Serhiy Cherevko
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy IEK-11, Forschungszentrum Jülich GmbH, Cauerstrasse 1, 91058, Erlangen, Germany
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9
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Fan W, Duan Z, Liu W, Mehmood R, Qu J, Cao Y, Guo X, Zhong J, Zhang F. Rational design of heterogenized molecular phthalocyanine hybrid single-atom electrocatalyst towards two-electron oxygen reduction. Nat Commun 2023; 14:1426. [PMID: 36918545 PMCID: PMC10014850 DOI: 10.1038/s41467-023-37066-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 03/01/2023] [Indexed: 03/16/2023] Open
Abstract
Single-atom catalysts supported on solid substrates have inspired extensive interest, but the rational design of high-efficiency single-atom catalysts is still plagued by ambiguous structure determination of active sites and its local support effect. Here, we report hybrid single-atom catalysts by an axial coordination linkage of molecular cobalt phthalocyanine with carbon nanotubes for selective oxygen reduction reaction by screening from a series of metal phthalocyanines via preferential density-functional theory calculations. Different from conventional heterogeneous single-atom catalysts, the hybrid single-atom catalysts are proven to facilitate rational screening of target catalysts as well as understanding of its underlying oxygen reduction reaction mechanism due to its well-defined active site structure and clear coordination linkage in the hybrid single-atom catalysts. Consequently, the optimized Co hybrid single-atom catalysts exhibit improved 2e- oxygen reduction reaction performance compared to the corresponding homogeneous molecular catalyst in terms of activity and selectivity. When prepared as an air cathode in an air-breathing flow cell device, the optimized hybrid catalysts enable the oxygen reduction reaction at 300 mA cm-2 exhibiting a stable Faradaic efficiency exceeding 90% for 25 h.
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Affiliation(s)
- Wenjun Fan
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023, Dalian, China
| | - Zhiyao Duan
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, 710072, Xi'an, P. R. China.
| | - Wei Liu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 116024, Dalian, China
| | - Rashid Mehmood
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023, Dalian, China.,University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Jiating Qu
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023, Dalian, China.,University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Yucheng Cao
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023, Dalian, China.,University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Xiangyang Guo
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023, Dalian, China
| | - Jun Zhong
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 215123, Suzhou, Jiangsu, P. R. China
| | - Fuxiang Zhang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023, Dalian, China.
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10
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Uppuluri R, Hwang S, Maheshwari S, Zhao P, Gray JL, Rosas AS, Yennawar HP, Fan X, Janik MJ, Mallouk TE. Stabilization of Dinuclear Rhodium and Iridium Clusters on Layered Titanate and Niobate Supports. Inorg Chem 2023; 62:1113-1121. [PMID: 36351259 DOI: 10.1021/acs.inorgchem.2c03225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Atomically dispersed organometallic clusters can provide well-defined nuclearity of active sites for both fundamental studies as well as new regimes of activity and selectivity in chemical transformations. More recently, dinuclear clusters adsorbed onto solid surfaces have shown novel catalytic properties resulting from the synergistic effect of two metal centers to anchor different reactant species. Difficulty in synthesizing, stabilizing, and characterizing isolated atoms and clusters without agglomeration challenges allocating catalytic performance to atomic structure. Here, we explore the stability of dinuclear rhodium and iridium clusters adsorbed onto layered titanate and niobate supports using molecular precursors. Both systems maintain their nuclearity when characterized using aberration-corrected high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM). Statistical analysis of HAADF-STEM images revealed that rhodium and iridium dimers had mean cluster-to-cluster distances very similar to what is expected from a random distribution of atoms over a large area, indicating that they are dispersed without aggregation. The stability of dinuclear rhodium clusters supported on titanate nanosheets was also investigated by X-ray absorption fine structure (EXAFS), DRIFTS, and first-principles calculations. Both X-ray absorption spectroscopy and HAADF-STEM simulations, guided by density functional theory (DFT)-optimized structure models, suggested that rhodium dimers adsorb onto the nanosheets in an end-on binding mode that is stable up to 100 °C under reducing conditions. This study highlights that crystalline nanosheets derived from layered metal oxides can be used as model supports to selectively stabilize dinuclear clusters, which could have implications for heterogeneous catalysis.
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Affiliation(s)
- Ritesh Uppuluri
- Departments of Chemistry, Biochemistry and Molecular Biology, and Physics, The Pennsylvania State University, University Park, Pennsylvania16802, United States
| | - Sooyeon Hwang
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York11973, United States
| | - Sharad Maheshwari
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania16802, United States
| | - Pengwei Zhao
- Department of Chemical Engineering, Tianjin University, Tianjin300072, China
| | - Jennifer L Gray
- Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania16802, United States
| | - Alyssa S Rosas
- Departments of Chemistry, Biochemistry and Molecular Biology, and Physics, The Pennsylvania State University, University Park, Pennsylvania16802, United States
| | - Hemant P Yennawar
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, Pennsylvania16802, United States
| | - Xiaobin Fan
- Department of Chemical Engineering, Tianjin University, Tianjin300072, China
| | - Michael J Janik
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania16802, United States
| | - Thomas E Mallouk
- Departments of Chemistry, Biochemistry and Molecular Biology, and Physics, The Pennsylvania State University, University Park, Pennsylvania16802, United States.,Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania19104, United States
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11
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Li H, Fei M, Troiano JL, Ma L, Yan X, Tieu P, Yuan Y, Zhang Y, Liu T, Pan X, Brudvig GW, Wang D. Selective Methane Oxidation by Heterogenized Iridium Catalysts. J Am Chem Soc 2023; 145:769-773. [PMID: 36594824 DOI: 10.1021/jacs.2c09434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Oxidative methane (CH4) carbonylation promises a direct route to the synthesis of value-added oxygenates such as acetic acid (CH3COOH). Here, we report a strategy to realize oxidative CH4 carbonylation through immobilized Ir complexes on an oxide support. Our immobilization approach not only enables direct CH4 activation but also allows for easy separation and reutilization of the catalyst. Furthermore, we show that a key step, methyl migration, that forms a C-C bond, is sensitive to the electrophilicity of carbonyl, which can be tuned by a gentle reduction to the Ir centers. While the as-prepared catalyst that mainly featured Ir(IV) preferred CH3COOH production, a reduced catalyst featuring predominantly Ir(III) led to a significant increase of CH3OH production at the expense of the reduced yield of CH3COOH.
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Affiliation(s)
- Haoyi Li
- Department of Chemistry, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Muchun Fei
- Department of Chemistry, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Jennifer L Troiano
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States.,Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, the United States
| | - Lu Ma
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Xingxu Yan
- Department of Materials Science and Engineering, University of California, Irvine, California 92697, United States.,Irvine Materials Research Institute, University of California, Irvine, California 92697, United States
| | - Peter Tieu
- Department of Chemistry, University of California, Irvine, California 92697, United States
| | - Yucheng Yuan
- Department of Chemistry, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Yuhan Zhang
- Department of Chemistry, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Tianying Liu
- Department of Chemistry, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Xiaoqing Pan
- Department of Materials Science and Engineering, University of California, Irvine, California 92697, United States.,Irvine Materials Research Institute, University of California, Irvine, California 92697, United States.,Department of Physics and Astronomy, University of California, Irvine, California 92697, United States
| | - Gary W Brudvig
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States.,Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, the United States
| | - Dunwei Wang
- Department of Chemistry, Boston College, Chestnut Hill, Massachusetts 02467, United States
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12
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Guo Q, Zhao Q, Crespo-Otero R, Di Tommaso D, Tang J, Dimitrov SD, Titirici MM, Li X, Jorge Sobrido AB. Single-Atom Iridium on Hematite Photoanodes for Solar Water Splitting: Catalyst or Spectator? J Am Chem Soc 2023; 145:1686-1695. [PMID: 36631927 PMCID: PMC9880996 DOI: 10.1021/jacs.2c09974] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Single-atom catalysts (SACs) on hematite photoanodes are efficient cocatalysts to boost photoelectrochemical performance. They feature high atom utilization, remarkable activity, and distinct active sites. However, the specific role of SACs on hematite photoanodes is not fully understood yet: Do SACs behave as a catalytic site or as a spectator? By combining spectroscopic experiments and computer simulations, we demonstrate that single-atom iridium (sIr) catalysts on hematite (α-Fe2O3/sIr) photoanodes act as a true catalyst by trapping holes from hematite and providing active sites for the water oxidation reaction. In situ transient absorption spectroscopy showed a reduced number of holes and shortened hole lifetime in the presence of sIr. This was particularly evident on the second timescale, indicative of fast hole transfer and depletion toward water oxidation. Intensity-modulated photocurrent spectroscopy evidenced a faster hole transfer at the α-Fe2O3/sIr/electrolyte interface compared to that at bare α-Fe2O3. Density functional theory calculations revealed the mechanism for water oxidation using sIr as a catalytic center to be the preferred pathway as it displayed a lower onset potential than the Fe sites. X-ray photoelectron spectroscopy demonstrated that sIr introduced a mid-gap of 4d state, key to the fast hole transfer and hole depletion. These combined results provide new insights into the processes controlling solar water oxidation and the role of SACs in enhancing the catalytic performance of semiconductors in photo-assisted reactions.
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Affiliation(s)
- Qian Guo
- School
of Engineering and Materials Science, Queen
Mary University of London, E1 4NS London, U.K.
| | - Qi Zhao
- School
of Physical and Chemical Sciences, Queen
Mary University of London, E1 4NS London, U.K.
| | - Rachel Crespo-Otero
- School
of Physical and Chemical Sciences, Queen
Mary University of London, E1 4NS London, U.K.
| | - Devis Di Tommaso
- School
of Physical and Chemical Sciences, Queen
Mary University of London, E1 4NS London, U.K.
| | - Junwang Tang
- Department
of Chemical Engineering, University College
London, Torrington Place, WC1E 7JE London, U.K.
| | - Stoichko D. Dimitrov
- School
of Physical and Chemical Sciences, Queen
Mary University of London, E1 4NS London, U.K.
| | | | - Xuanhua Li
- State
Key Laboratory of Solidification Processing, Center for Nano Energy
Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, 710072 Xi’an, China
| | - Ana Belén Jorge Sobrido
- School
of Engineering and Materials Science, Queen
Mary University of London, E1 4NS London, U.K.,
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13
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Vereshchuk N, Gil-Sepulcre M, Ghaderian A, Holub J, Gimbert-Suriñach C, Llobet A. Metamorphic oxygen-evolving molecular Ru and Ir catalysts. Chem Soc Rev 2023; 52:196-211. [PMID: 36459110 DOI: 10.1039/d2cs00463a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Today sustainable and clean energy conversion strategies are based on sunlight and the use of water as a source of protons and electrons, in a similar manner as it happens in Photosystem II. To achieve this, the charge separation state induced by light has to be capable of oxidising water by 4 protons and 4 electrons and generating molecular oxygen. This oxidation occurs by the intermediacy of a catalyst capable of finding low-energy pathways via proton-coupled electron transfer steps. The high energy involved in the thermodynamics of water oxidation reaction, coupled with its mechanistic complexity, is responsible for the difficulty of discovering efficient and oxidatively robust molecules capable of achieving such a challenging task. A significant number of Ru coordination complexes have been identified as water oxidation catalysts (WOCs) and are among the best understood from a mechanistic perspective. In this review, we describe the catalytic performance of these complexes and focus our attention on the factors that influence their performance during catalysis, especially in cases where a detailed mechanistic investigation has been carried out. The collective information extracted from all the catalysts studied allows one to identify the key features that govern the complex chemistry associated with the catalytic water oxidation reaction. This includes the stability of trans-O-Ru-O groups, the change in coordination number from CN6 to CN7 at Ru high oxidation states, the ligand flexibility, the capacity to undergo intramolecular proton transfer, the bond strain, the axial ligand substitution, and supramolecular effects. Overall, combining all this information generates a coherent view of this complex chemistry.
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Affiliation(s)
- Nataliia Vereshchuk
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans 16, 43007 Tarragona, Spain. .,Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo s/n, 43007 Tarragona, Spain
| | - Marcos Gil-Sepulcre
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans 16, 43007 Tarragona, Spain.
| | - Abolfazl Ghaderian
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans 16, 43007 Tarragona, Spain. .,Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo s/n, 43007 Tarragona, Spain
| | - Jan Holub
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans 16, 43007 Tarragona, Spain. .,Department of Inorganic Chemistry, University of Chemistry and Technology, Prague, CZ-16628 Prague, Czech Republic
| | - Carolina Gimbert-Suriñach
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans 16, 43007 Tarragona, Spain. .,Departament de Química, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193 Barcelona, Spain
| | - Antoni Llobet
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans 16, 43007 Tarragona, Spain. .,Departament de Química, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193 Barcelona, Spain
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14
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Kim M, Yi J, Park SH, Park SS. Heterogenization of Molecular Electrocatalytic Active Sites through Reticular Chemistry. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2203791. [PMID: 35853171 DOI: 10.1002/adma.202203791] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 07/07/2022] [Indexed: 06/15/2023]
Abstract
The electrochemical conversion of small molecules, such as CO2 , O2 , and H2 O, has received significant attention as a potential engine for sustainable life. Metal-organic frameworks (MOFs) are a promising class of electrocatalytic materials for such processes. An attractive aspect of utilizing this class of materials as electrocatalysts is that well-known molecular active sites can be introduced to well-defined crystalline heterogeneous catalytic systems with high tunability. This review offers strategic insights into recent studies on MOF-based electrocatalysts by discussing the notable active sites that have been utilized in both homogeneous and heterogeneous catalysts, while highlighting instances where such active sites have been introduced into MOFs. In addition, material design principles enabling the integration of electrochemically active components with the MOF platform are outlined. Viewpoints on the viability of MOFs as an alternative to currently used electrocatalysts are also discussed. Finally, the future direction of MOF-based electrocatalysis research is established.
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Affiliation(s)
- Minseok Kim
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Jaekyung Yi
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Seong-Hyeon Park
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Sarah S Park
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
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15
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Krivina RA, Zlatar M, Stovall TN, Lindquist GA, Eascalera-López D, Cook AK, Hutchison JE, Cherevko S, Boettcher SW. Oxygen Evolution Electrocatalysis in Acids: Atomic Tuning of the Stability Number for Submonolayer IrO x on Conductive Oxides from Molecular Precursors. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Raina A. Krivina
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
| | - Matej Zlatar
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, 91058 Erlangen, Germany
- Department of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, 91058 Erlangen, Germany
| | - T. Nathan Stovall
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
| | - Grace A. Lindquist
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
| | - Daniel Eascalera-López
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, 91058 Erlangen, Germany
- Department of Interface Science, Fritz-Haber Institute of the Max-Planck Society, 14195 Berlin, Germany
| | - Amanda K. Cook
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
| | - James E. Hutchison
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
| | - Serhiy Cherevko
- Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, 91058 Erlangen, Germany
| | - Shannon W. Boettcher
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
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16
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Bikas R, Shaghaghi Z, Heshmati-Sharabiani Y, Heydari N, Lis T. Water oxidation reaction in the presence of a dinuclear Mn(II)-semicarbohydrazone coordination compound. PHOTOSYNTHESIS RESEARCH 2022; 154:383-395. [PMID: 35870060 DOI: 10.1007/s11120-022-00939-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 06/25/2022] [Indexed: 06/15/2023]
Abstract
Water splitting, producing of oxygen, and hydrogen molecules, is an essential reaction for clean energy resources and is one of the challenging reactions for artificial photosynthesis. The Mn4Ca cluster in photosystem II (PS-II) is responsible for water oxidation in natural photosynthesis. Due to this, water oxidation reaction by Mn coordination compounds is vital for mimicking the active core of the oxygen-evolving complex in PS-II. Here, a new dinuclear Mn(II)-semicarbohydrazone coordination compound, [Mn(HL)(µ-N3)Cl]2 (1), was synthesized and characterized by various methods. The structure of compound 1 was determined by single crystal X-ray analysis, which revealed the Mn(II) ions have distorted octahedral geometry as (MnN4OCl). This geometry is created by coordinating of oxygen and two nitrogen donor atoms from semicarbohydrazone ligand, two nitrogen atoms from azide bridges, and chloride anion. Compound 1 was used as a catalyst for electrochemical water oxidation, and the surface of the electrode after the reaction was investigated by scanning electron microscopy, energy dispersive spectrometry, and powder X-ray diffraction analyses. Linear sweep voltammetry (LSV) experiments revealed that the electrode containing 1 shows high activity for chemical water oxidation with an electrochemical overpotential as low as 377 mV. Although our findings showed that the carbon paste electrode in the presence of 1 is an efficient electrode for water oxidation, it could not withstand water oxidation catalysis under bulk electrolysis and finally converted to Mn oxide nanoparticles which were active for water oxidation along with compound 1.
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Affiliation(s)
- Rahman Bikas
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, 34148-96818, Iran.
| | - Zohreh Shaghaghi
- Coordination Chemistry Research Laboratory, Department of Chemistry, Faculty of Basic Sciences, Azarbaijan Shahid Madani University, Tabriz, 5375171379, Iran
| | - Yahya Heshmati-Sharabiani
- Coordination Chemistry Research Laboratory, Department of Chemistry, Faculty of Basic Sciences, Azarbaijan Shahid Madani University, Tabriz, 5375171379, Iran
| | - Neda Heydari
- Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan, 45371-38791, Iran
| | - Tadeusz Lis
- Faculty of Chemistry, University of Wroclaw, Joliot-Curie 14, 50-383, Wrocław, Poland
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17
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Supercapacitor and oxygen evolution reaction performances based on rGO and Mn2V2O7 nanomaterials. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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18
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Topchiyan P, Vasilchenko D, Tkachev S, Sheven D, Eltsov I, Asanov I, Sidorenko N, Saraev A, Gerasimov E, Kurenkova A, Kozlova E. Highly Active Visible Light-Promoted Ir/ g-C 3N 4 Photocatalysts for the Water Oxidation Reaction Prepared from a Halogen-Free Iridium Precursor. ACS APPLIED MATERIALS & INTERFACES 2022; 14:35600-35612. [PMID: 35881890 DOI: 10.1021/acsami.2c07485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A combination of the exceptional stability of fac-[Ir(H2O)3(NO2)3] together with thermolability of nitro and aqua ligands and high solubility in various solvents makes it promising as a brand-new chlorine-free precursor of iridium for the preparation of heterogeneous catalysts. In the current work, a new technique of fac-[Ir(H2O)3(NO2)3] preparation based on hydrothermal treatment of (NH4)3[Ir(NO2)6] was developed. For this purpose, the influence of reaction parameters such as the reaction time, temperature, and pH of the solution on the process of hexanitroiridate salt hydrolysis was investigated. The synthesized fac-[Ir(H2O)3(NO2)3] solution in this optimized way was used for the preparation of the series of Ir/g-C3N4 catalysts, which were evaluated in the water oxidation reaction with NaIO4 utilized as a sacrificial reagent. A 20-fold enhancement of the oxygen evolution reaction (OER) activity was found to take place under visible light (λ = 411 nm) illumination of the systems. The highest rate of the photoinduced OER per iridium center was achieved by the Ir0.005/g-C3N4 (air, 400°C) catalyst with an exceptional turnover frequency value of 967 min-1 approaching the activity of known homogeneous iridium OER catalysts. The leaching experiments have shown that aquated Ir species are generated in a solution after prolonged functioning of the catalysts. Despite this, in the closed system the photodriven OER activity persists at a steady-state level evidencing an equilibrium achieved between dissolved and anchored Ir species forming catalytic tandem with the g-C3N4.
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Affiliation(s)
- Polina Topchiyan
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Science, 630090 Novosibirsk, Russian Federation
- Federal Research Center Boreskov Institute of Catalysis, 630090 Novosibirsk, Russian Federation
| | - Danila Vasilchenko
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Science, 630090 Novosibirsk, Russian Federation
- Federal Research Center Boreskov Institute of Catalysis, 630090 Novosibirsk, Russian Federation
| | - Sergey Tkachev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Science, 630090 Novosibirsk, Russian Federation
| | - Dmitriy Sheven
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Science, 630090 Novosibirsk, Russian Federation
| | - Ilia Eltsov
- Novosibirsk State University, 630090 Novosibirsk, Russian Federation
| | - Igor Asanov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Science, 630090 Novosibirsk, Russian Federation
| | - Nikolay Sidorenko
- Federal Research Center Boreskov Institute of Catalysis, 630090 Novosibirsk, Russian Federation
- Novosibirsk State University, 630090 Novosibirsk, Russian Federation
| | - Andrey Saraev
- Federal Research Center Boreskov Institute of Catalysis, 630090 Novosibirsk, Russian Federation
| | - Evgeny Gerasimov
- Federal Research Center Boreskov Institute of Catalysis, 630090 Novosibirsk, Russian Federation
| | - Anna Kurenkova
- Federal Research Center Boreskov Institute of Catalysis, 630090 Novosibirsk, Russian Federation
| | - Ekaterina Kozlova
- Federal Research Center Boreskov Institute of Catalysis, 630090 Novosibirsk, Russian Federation
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19
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Bozal-Ginesta C, Rao RR, Mesa CA, Wang Y, Zhao Y, Hu G, Antón-García D, Stephens IEL, Reisner E, Brudvig GW, Wang D, Durrant JR. Spectroelectrochemistry of Water Oxidation Kinetics in Molecular versus Heterogeneous Oxide Iridium Electrocatalysts. J Am Chem Soc 2022; 144:8454-8459. [PMID: 35511107 PMCID: PMC9121376 DOI: 10.1021/jacs.2c02006] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Water oxidation is the step limiting
the efficiency of electrocatalytic
hydrogen production from water. Spectroelectrochemical analyses are
employed to make a direct comparison of water oxidation reaction kinetics
between a molecular catalyst, the dimeric iridium catalyst [Ir2(pyalc)2(H2O)4-(μ-O)]2+ (IrMolecular, pyalc
= 2-(2′pyridinyl)-2-propanolate) immobilized on a mesoporous
indium tin oxide (ITO) substrate, with that of an heterogeneous electrocatalyst,
an amorphous hydrous iridium (IrOx) film. For both systems, four analogous redox states were
detected, with the formation of Ir(4+)–Ir(5+) being the potential-determining
step in both cases. However, the two systems exhibit distinct water
oxidation reaction kinetics, with potential-independent first-order
kinetics for IrMolecular contrasting
with potential-dependent kinetics for IrOx. This is attributed to water oxidation on the heterogeneous
catalyst requiring co-operative effects between neighboring oxidized
Ir centers. The ability of IrMolecular to drive water oxidation without such co-operative effects
is explained by the specific coordination environment around its Ir
centers. These distinctions between molecular and heterogeneous reaction
kinetics are shown to explain the differences observed in their water
oxidation electrocatalytic performance under different potential conditions.
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Affiliation(s)
- Carlota Bozal-Ginesta
- Department of Chemistry, Centre for Processable Electronics, Imperial College London, 80 Wood Lane, London W12 0BZ, U.K
| | - Reshma R Rao
- Department of Chemistry, Centre for Processable Electronics, Imperial College London, 80 Wood Lane, London W12 0BZ, U.K
| | - Camilo A Mesa
- Department of Chemistry, Centre for Processable Electronics, Imperial College London, 80 Wood Lane, London W12 0BZ, U.K
| | - Yuanxing Wang
- Department of Chemistry, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Yanyan Zhao
- Department of Chemistry, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Gongfang Hu
- Yale Energy Sciences Institute and Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Daniel Antón-García
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Ifan E L Stephens
- Department of Materials, Imperial College London, 80 Wood Lane, London W12 0BZ, U.K
| | - Erwin Reisner
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Gary W Brudvig
- Yale Energy Sciences Institute and Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Dunwei Wang
- Department of Chemistry, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - James R Durrant
- Department of Chemistry, Centre for Processable Electronics, Imperial College London, 80 Wood Lane, London W12 0BZ, U.K
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20
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Selectively anchoring single atoms on specific sites of supports for improved oxygen evolution. Nat Commun 2022; 13:2473. [PMID: 35513390 PMCID: PMC9072319 DOI: 10.1038/s41467-022-30148-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 04/19/2022] [Indexed: 12/20/2022] Open
Abstract
The homogeneity of single-atom catalysts is only to the first-order approximation when all isolated metal centers interact identically with the support. Since the realistic support with various topologies or defects offers diverse coordination environments, realizing real homogeneity requires precise control over the anchoring sites. In this work, we selectively anchor Ir single atoms onto the three-fold hollow sites (Ir1/TO–CoOOH) and oxygen vacancies (Ir1/VO–CoOOH) on defective CoOOH surface to investigate how the anchoring sites modulate catalytic performance. The oxygen evolution activities of Ir1/TO–CoOOH and Ir1/VO–CoOOH are improved relative to CoOOH through different mechanisms. For Ir1/TO–CoOOH, the strong electronic interaction between single-atom Ir and the support modifies the electronic structure of the active center for stronger electronic affinity to intermediates. For Ir1/VO–CoOOH, a hydrogen bonding is formed between the coordinated oxygen of single-atom Ir center and the oxygenated intermediates, which stabilizes the intermediates and lowers the energy barrier of the rate-determining step. While single-atom catalysts offer well-defined structures, the homogeneity of the active sites is determined by localized coordination environments. Here, authors anchor Ir single atoms onto different sites on CoOOH and show how their distinct coordinations activate oxygen-evolving electrocatalysis
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21
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Lu Y, Tsegaw YA, Wodyński A, Li L, Beckers H, Kaupp M, Riedel S. Investigation of Molecular Iridium Fluorides IrF
n
(
n
=1–6): A Combined Matrix‐Isolation and Quantum‐Chemical Study. Chemistry 2022; 28:e202104005. [PMID: 35181951 PMCID: PMC9310635 DOI: 10.1002/chem.202104005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Indexed: 12/03/2022]
Abstract
The photo‐initiated defluorination of iridium hexafluoride (IrF6) was investigated in neon and argon matrices at 6 K, and their photoproducts are characterized by IR and UV‐vis spectroscopies as well as quantum‐chemical calculations. The primary photoproducts obtained after irradiation with λ=365 nm are iridium pentafluoride (IrF5) and iridium trifluoride (IrF3), while longer irradiation of the same matrix with λ=278 nm produced iridium tetrafluoride (IrF4) and iridium difluoride (IrF2) by Ir−F bond cleavage or F2 elimination. In addition, IrF5 can be reversed to IrF6 by adding a F atom when exposed to blue‐light (λ=470 nm) irradiation. Laser irradiation (λ=266 nm) of IrF4 also generated IrF6, IrF5, IrF3 and IrF2. Alternatively, molecular binary iridium fluorides IrFn (n=1–6) were produced by co‐deposition of laser‐ablated iridium atoms with elemental fluorine in excess neon and argon matrices under cryogenic conditions. Computational studies up to scalar relativistic CCSD(T)/triple‐ζ level and two‐component quasirelativistic DFT computations including spin‐orbit coupling effects supported the formation of these products and provided detailed insights into their molecular structures by their characteristic Ir−F stretching bands. Compared to the Jahn‐Teller effect, the influence of spin‐orbit coupling dominates in IrF5, leading to a triplet ground state with C4v symmetry, which was spectroscopically detected in solid argon and neon matrices.
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Affiliation(s)
- Yan Lu
- Freie Universität Berlin Institut für Chemie und Biochemie-Anorganische Chemie Fabeckstrasse 34/36 14195 Berlin Germany
| | - Yetsedaw A. Tsegaw
- Freie Universität Berlin Institut für Chemie und Biochemie-Anorganische Chemie Fabeckstrasse 34/36 14195 Berlin Germany
| | - Artur Wodyński
- Technische Universität Berlin Institut für Chemie Theoretische Chemie/Quantenchemie Sekr. C7 Strasse des 17. Juni 135 10623 Berlin Germany
| | - Lin Li
- Freie Universität Berlin Institut für Chemie und Biochemie-Anorganische Chemie Fabeckstrasse 34/36 14195 Berlin Germany
| | - Helmut Beckers
- Freie Universität Berlin Institut für Chemie und Biochemie-Anorganische Chemie Fabeckstrasse 34/36 14195 Berlin Germany
| | - Martin Kaupp
- Technische Universität Berlin Institut für Chemie Theoretische Chemie/Quantenchemie Sekr. C7 Strasse des 17. Juni 135 10623 Berlin Germany
| | - Sebastian Riedel
- Freie Universität Berlin Institut für Chemie und Biochemie-Anorganische Chemie Fabeckstrasse 34/36 14195 Berlin Germany
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22
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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
![]()
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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23
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Tsubonouchi Y, Hayasaka T, Wakai Y, Mohamed EA, Zahran ZN, Yagi M. Highly Efficient and Durable Electrocatalysis by a Molecular Catalyst with Long Alkoxyl Chains Immobilized on a Carbon Electrode for Water Oxidation. ACS APPLIED MATERIALS & INTERFACES 2022; 14:15154-15164. [PMID: 35319176 DOI: 10.1021/acsami.1c24263] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A dinuclear Ru complex, proximal,proximal-[Ru2L(C8Otpy)2(OH)(OH2)]3+ (C8Otpy = 4'-octyloxy-2,2'; 6',2″-terpyridine) (1) with long alkoxyl chains, was synthesized to be immobilized on a carbon paper (CP) electrode via hydrophobic interactions between the long alkoxyl chains and the CP surface. The 1/CP electrode demonstrated efficient electrocatalytic water oxidation with a low overpotential (ηonset) of 0.26 V (based on the onset potential for water oxidation) in an aqueous medium at pH 7.0, which is compared advantageously with those of hitherto-reported molecular anodes for water oxidation. The active species of RuIIIRuIII(μ-OO) with a μ-OO bridge was involved in water oxidation at 0.95 V versus Ag/AgCl. As the applied potential increased to 1.40 V, water oxidation was promoted by participation of the more active species of RuIIIRuIV(μ-OO), and very durable electrocatalysis was gained for more than 35 h without elution of 1 into the electrolyte solution. The introduced long alkoxyl chains act as a dual role of the linker of 1 on the CP surface and decrease the η value. Theoretical investigation provides insights into the O-O bond formation mechanism and the activity difference between RuIIIRuIII(μ-OO) and RuIIIRuIV(μ-OO) for electrocatalytic water oxidation.
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Affiliation(s)
- Yuta Tsubonouchi
- Department of Materials Science and Technology, Faculty of Engineering, Niigata University, 8050 Ikarashi-2, Niigata 9050-2181, Japan
| | - Taichi Hayasaka
- Department of Materials Science and Technology, Faculty of Engineering, Niigata University, 8050 Ikarashi-2, Niigata 9050-2181, Japan
| | - Yuki Wakai
- Department of Materials Science and Technology, Faculty of Engineering, Niigata University, 8050 Ikarashi-2, Niigata 9050-2181, Japan
| | - Eman A Mohamed
- Department of Materials Science and Technology, Faculty of Engineering, Niigata University, 8050 Ikarashi-2, Niigata 9050-2181, Japan
| | - Zaki N Zahran
- Department of Materials Science and Technology, Faculty of Engineering, Niigata University, 8050 Ikarashi-2, Niigata 9050-2181, Japan
| | - Masayuki Yagi
- Department of Materials Science and Technology, Faculty of Engineering, Niigata University, 8050 Ikarashi-2, Niigata 9050-2181, Japan
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24
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Heterogenization of Molecular Water Oxidation Catalysts in Electrodes for (Photo)Electrochemical Water Oxidation. WATER 2022. [DOI: 10.3390/w14030371] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Water oxidation is still one of the most important challenges to develop efficient artificial photosynthetic devices. In recent decades, the development and study of molecular complexes for water oxidation have allowed insight into the principles governing catalytic activity and the mechanism as well as establish ligand design guidelines to improve performance. However, their durability and long-term stability compromise the performance of molecular-based artificial photosynthetic devices. In this context, heterogenization of molecular water oxidation catalysts on electrode surfaces has emerged as a promising approach for efficient long-lasting water oxidation for artificial photosynthetic devices. This review covers the state of the art of strategies for the heterogenization of molecular water oxidation catalysts onto electrodes for (photo)electrochemical water oxidation. An overview and description of the main binding strategies are provided explaining the advantages of each strategy and their scope. Moreover, selected examples are discussed together with the the differences in activity and stability between the homogeneous and the heterogenized system when reported. Finally, the common design principles for efficient (photo)electrocatalytic performance summarized.
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25
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Yan YT, Ge L, Wu YL, Cai W, Tang PF, Zhang WY, Wang YY. Two new Ni/Co-MOFs as electrocatalysts for the oxygen evolution reaction in alkaline electrolytes. NEW J CHEM 2022. [DOI: 10.1039/d2nj03815c] [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
Two novel Ni/Co-MOFs electrocatalysts were synthesized. Ni-MOF demonstrated a good activity in electrocatalytic OER performances and short-term electrochemical durability.
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Affiliation(s)
- Yang-Tian Yan
- School of Materials Science & Engineering, Xi’an Polytechnic University, Xi’an 710048, P. R. China
| | - Lei Ge
- Centre for Future Materials, University of Southern Queensland, Springfield, QLD 4300, Australia
| | - Yun-Long Wu
- School of Materials Science & Engineering, Xi’an Polytechnic University, Xi’an 710048, P. R. China
| | - Wei Cai
- School of Materials Science & Engineering, Xi’an Polytechnic University, Xi’an 710048, P. R. China
| | - Peng-Fei Tang
- School of Materials Science & Engineering, Xi’an Polytechnic University, Xi’an 710048, P. R. China
| | - Wen-Yan Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi’an 710127, P. R. China
| | - Yao-Yu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi’an 710127, P. R. China
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26
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Chen D, Chen W, Zhang G, Li S, Chen W, Xing G, Chen L. N-Rich 2D Heptazine Covalent Organic Frameworks as Efficient Metal-Free Photocatalysts. ACS Catal 2021. [DOI: 10.1021/acscatal.1c05233] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Dan Chen
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Weiben Chen
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Guang Zhang
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Shen Li
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Weihua Chen
- College of Chemistry and Green Catalysis Center, Zhengzhou University, Zhengzhou, Henan 450001, People’s Republic of China
| | - Guolong Xing
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Long Chen
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University, Tianjin 300072, People’s Republic of China
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People’s Republic of China
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27
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Unveiling the boosting of metal organic cage leaching substance on the electrocatalytic oxygen evolution reaction. J Colloid Interface Sci 2021; 610:1035-1042. [PMID: 34872723 DOI: 10.1016/j.jcis.2021.11.150] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/03/2021] [Accepted: 11/24/2021] [Indexed: 12/23/2022]
Abstract
Catalysts often undergo changes during the process of catalytic reactions, which makes the whole catalytic reaction system complicated and brings about much difficulty for the exploration of catalytic mechanism. Herein, we report that an octahedral metal organic cage (MOC) with stress was directionally transformed into two-dimensional nanoarrays maintaining the structure of precursor and new soluble low-nuclear complexes during the electrocatalytic oxygen evolution reaction (OER). The in-situ generated miscible electrocatalyst exhibits an overpotential as low as 197 mV at 10 mA cm-2, with a high electrochemical stability up to 5 h. Notably, the miscible catalyst can be used as bifunctional electrocatalyst for OER and hydrogen evolution reaction (HER) and exhibits an ultra-low overpotential of 293 mV, even achieve overall water splitting under the voltage provided by a 1.5 V AA battery. As revealed by density functional theory simulations, the position of SO42- in MOC heterogeneous catalyst is regulated by the soluble low-nuclear complexes to reduce the activation energy of the reaction, leading to an optimization of the OER activity for the reaction system. This work provides a new strategy for the rational design of high-efficiency electrocatalytic system.
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28
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29
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Rodriguez GM, Zaccaria F, Van Dijk S, Zuccaccia C, Macchioni A. Substituent Effects on the Activity of Cp*Ir(pyridine-carboxylate) Water Oxidation Catalysts: Which Ligand Fragments Remain Coordinated to the Active Ir Centers? Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00464] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Gabriel Menendez Rodriguez
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università; Degli Studi di Perugia, Via Elceo di Sotto 8, 06123 Perugia, Italy
| | - Francesco Zaccaria
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università; Degli Studi di Perugia, Via Elceo di Sotto 8, 06123 Perugia, Italy
| | - Sybren Van Dijk
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università; Degli Studi di Perugia, Via Elceo di Sotto 8, 06123 Perugia, Italy
| | - Cristiano Zuccaccia
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università; Degli Studi di Perugia, Via Elceo di Sotto 8, 06123 Perugia, Italy
| | - Alceo Macchioni
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università; Degli Studi di Perugia, Via Elceo di Sotto 8, 06123 Perugia, Italy
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30
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Ibrahim S, Rafique U, Saleem M, Iqbal W, Abbas S, Shah WA, Imran M, Nadeem MA. High performance of homo-metallic tetracyanonickelate based coordination polymer towards water oxidation electrocatalysis. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120510] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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31
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Hu G, Troiano JL, Tayvah UT, Sharninghausen LS, Sinha SB, Shopov DY, Mercado BQ, Crabtree RH, Brudvig GW. Accessing Molecular Dimeric Ir Water Oxidation Catalysts from Coordination Precursors. Inorg Chem 2021; 60:14349-14356. [PMID: 34478282 DOI: 10.1021/acs.inorgchem.1c02025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
One ongoing challenge in the field of iridium-based water oxidation catalysts is to develop a molecular precatalyst affording well-defined homogeneous active species for catalysis. Our previous work by using organometallic precatalysts Cp*Ir(pyalk)OH and Ir(pyalk)(CO)2 (pyalk = (2-pyridyl)-2-propanolate) suggested a μ-oxo-bridged Ir dimer as the probable resting state, although the structure of the active species remained elusive. During the activation, the ligands Cp* and CO were found to oxidatively degrade into acetic acid or other products, which coordinate to Ir centers and affect the catalytic reaction. Two related dimers bearing two pyalk ligands on each iridium were crystallized for structural analysis. However, preliminary results indicated that these crystallographically characterized dimers are not active catalysts. In this work, we accessed a mixture of dinuclear iridium species from a coordination precursor, Na[Ir(pyalk)Cl4], and assayed their catalytic activity for oxygen evolution by using NaIO4 as the oxidant. This catalyst showed comparable oxygen-evolution activity to the ones previously reported from organometallic precursors without demanding oxidative activation to remove sacrificial ligands. Future research along this direction is expected to provide insights and design principles toward a well-defined active species.
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Affiliation(s)
- Gongfang Hu
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States.,Energy Sciences Institute, Yale University, 520 West Campus Drive, West Haven, Connecticut 06516, United States
| | - Jennifer L Troiano
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States.,Energy Sciences Institute, Yale University, 520 West Campus Drive, West Haven, Connecticut 06516, United States
| | - Uriel T Tayvah
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States.,Energy Sciences Institute, Yale University, 520 West Campus Drive, West Haven, Connecticut 06516, United States
| | - Liam S Sharninghausen
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - Shashi Bhushan Sinha
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - Dimitar Y Shopov
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - Brandon Q Mercado
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - Robert H Crabtree
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States.,Energy Sciences Institute, Yale University, 520 West Campus Drive, West Haven, Connecticut 06516, United States
| | - Gary W Brudvig
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States.,Energy Sciences Institute, Yale University, 520 West Campus Drive, West Haven, Connecticut 06516, United States
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32
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Bio-Inspired Molecular Catalysts for Water Oxidation. Catalysts 2021. [DOI: 10.3390/catal11091068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The catalytic tetranuclear manganese-calcium-oxo cluster in the photosynthetic reaction center, photosystem II, provides an excellent blueprint for light-driven water oxidation in nature. The water oxidation reaction has attracted intense interest due to its potential as a renewable, clean, and environmentally benign source of energy production. Inspired by the oxygen-evolving complex of photosystem II, a large of number of highly innovative synthetic bio-inspired molecular catalysts are being developed that incorporate relatively cheap and abundant metals such as Mn, Fe, Co, Ni, and Cu, as well as Ru and Ir, in their design. In this review, we briefly discuss the historic milestones that have been achieved in the development of transition metal catalysts and focus on a detailed description of recent progress in the field.
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33
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Geer AM, Liu C, Musgrave CB, Webber C, Johnson G, Zhou H, Sun CJ, Dickie DA, Goddard WA, Zhang S, Gunnoe TB. Noncovalent Immobilization of Pentamethylcyclopentadienyl Iridium Complexes on Ordered Mesoporous Carbon for Electrocatalytic Water Oxidation. SMALL SCIENCE 2021. [DOI: 10.1002/smsc.202100037] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Ana M. Geer
- Department of Chemistry University of Virginia Charlottesville VA 22904 USA
| | - Chang Liu
- Department of Chemistry University of Virginia Charlottesville VA 22904 USA
| | - Charles B. Musgrave
- Materials and Process Simulation Center Department of Chemistry California Institute of Technology Pasadena CA 91125 USA
| | - Christopher Webber
- Department of Chemistry University of Virginia Charlottesville VA 22904 USA
| | - Grayson Johnson
- Department of Chemistry University of Virginia Charlottesville VA 22904 USA
| | - Hua Zhou
- Advanced Photon Source Argonne National Laboratory Lemont IL 60439 USA
| | - Cheng-Jun Sun
- Advanced Photon Source Argonne National Laboratory Lemont IL 60439 USA
| | - Diane A. Dickie
- Department of Chemistry University of Virginia Charlottesville VA 22904 USA
| | - William A. Goddard
- Materials and Process Simulation Center Department of Chemistry California Institute of Technology Pasadena CA 91125 USA
| | - Sen Zhang
- Department of Chemistry University of Virginia Charlottesville VA 22904 USA
| | - T. Brent Gunnoe
- Department of Chemistry University of Virginia Charlottesville VA 22904 USA
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34
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Gao J, Tao H, Liu B. Progress of Nonprecious-Metal-Based Electrocatalysts for Oxygen Evolution in Acidic Media. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2003786. [PMID: 34169587 DOI: 10.1002/adma.202003786] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 10/29/2020] [Indexed: 06/13/2023]
Abstract
Water oxidation, or the oxygen evolution reaction (OER), which combines two oxygen atoms from two water molecules and releases one oxygen molecule, plays the key role by providing protons and electrons needed for the hydrogen generation, electrochemical carbon dioxide reduction, and nitrogen fixation. The multielectron transfer OER process involves multiple reaction intermediates, and a high overpotential is needed to overcome the sluggish kinetics. Among the different water splitting devices, proton exchange membrane (PEM) water electrolyzer offers greater advantages. However, current anode OER electrocatalysts in PEM electrolyzers are limited to precious iridium and ruthenium oxides. Developing highly active, stable, and precious-metal-free electrocatalysts for water oxidation in acidic media is attractive for the large-scale application of PEM electrolyzers. In recent years, various types of precious-metal-free catalysts such as carbon-based materials, earth-abundant transition metal oxides, and multiple metal oxide mixtures have been investigated and some of them show promising activity and stability for acidic OER. In this review, the thermodynamics of water oxidation, Pourbaix diagram of metal elements in aqueous solution, and theoretical screening and prediction of precious-metal-free electrocatalysts for acidic OER are first elaborated. The catalytic performance, reaction kinetics, and mechanisms together with future research directions regarding acidic OER are summarized and discussed.
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Affiliation(s)
- Jiajian Gao
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Huabing Tao
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen, 361005, China
| | - Bin Liu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
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35
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Qi M, Zhang H, Dong Q, Li J, Musgrave RA, Zhao Y, Dulock N, Wang D, Byers JA. Electrochemically switchable polymerization from surface-anchored molecular catalysts. Chem Sci 2021; 12:9042-9052. [PMID: 34276933 PMCID: PMC8261715 DOI: 10.1039/d1sc02163j] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Accepted: 05/27/2021] [Indexed: 11/21/2022] Open
Abstract
Redox-switchable polymerizations of lactide and epoxides were extended to the solid state by anchoring an iron-based polymerization catalyst to TiO2 nanoparticles. The reactivity of the molecular complexes and their redox-switching characteristics were maintained in the solid-state. These properties resulted in surface-initiated polymerization reactions that produced polymer brushes whose chemical composition is dictated by the oxidation state of the iron-based complex. Depositing the catalyst-functionalized TiO2 nanoparticles on fluorine-doped tin oxide resulted in an electrically addressable surface that could be used to demonstrate spatial control in redox-switchable polymerization reactions. By using a substrate that contained two electrically isolated domains wherein one domain was exposed to an oxidizing potential, patterns of surface-bound polyesters and polyethers were accessible through sequential application of lactide and cyclohexene oxide. The differentially functionalized surfaces demonstrated distinct physical properties that illustrated the promise for using the method to pattern surfaces with multiple, chemically distinct polymer brushes.
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Affiliation(s)
- Miao Qi
- Department of Chemistry, Boston College 2609 Beacon St., Chestnut Hill MA 02467 USA
| | - Haochuan Zhang
- Department of Chemistry, Boston College 2609 Beacon St., Chestnut Hill MA 02467 USA
| | - Qi Dong
- Department of Chemistry, Boston College 2609 Beacon St., Chestnut Hill MA 02467 USA
| | - Jingyi Li
- Department of Chemistry, Boston College 2609 Beacon St., Chestnut Hill MA 02467 USA
| | - Rebecca A Musgrave
- Department of Chemistry and Chemical Biology, Harvard University 12 Oxford Street Cambridge Massachusetts 02138 USA
| | - Yanyan Zhao
- Department of Chemistry, Boston College 2609 Beacon St., Chestnut Hill MA 02467 USA
| | - Nicholas Dulock
- Department of Chemistry, Boston College 2609 Beacon St., Chestnut Hill MA 02467 USA
| | - Dunwei Wang
- Department of Chemistry, Boston College 2609 Beacon St., Chestnut Hill MA 02467 USA
| | - Jeffery A Byers
- Department of Chemistry, Boston College 2609 Beacon St., Chestnut Hill MA 02467 USA
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36
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Barry E, Burns R, Chen W, De Hoe GX, De Oca JMM, de Pablo JJ, Dombrowski J, Elam JW, Felts AM, Galli G, Hack J, He Q, He X, Hoenig E, Iscen A, Kash B, Kung HH, Lewis NHC, Liu C, Ma X, Mane A, Martinson ABF, Mulfort KL, Murphy J, Mølhave K, Nealey P, Qiao Y, Rozyyev V, Schatz GC, Sibener SJ, Talapin D, Tiede DM, Tirrell MV, Tokmakoff A, Voth GA, Wang Z, Ye Z, Yesibolati M, Zaluzec NJ, Darling SB. Advanced Materials for Energy-Water Systems: The Central Role of Water/Solid Interfaces in Adsorption, Reactivity, and Transport. Chem Rev 2021; 121:9450-9501. [PMID: 34213328 DOI: 10.1021/acs.chemrev.1c00069] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The structure, chemistry, and charge of interfaces between materials and aqueous fluids play a central role in determining properties and performance of numerous water systems. Sensors, membranes, sorbents, and heterogeneous catalysts almost uniformly rely on specific interactions between their surfaces and components dissolved or suspended in the water-and often the water molecules themselves-to detect and mitigate contaminants. Deleterious processes in these systems such as fouling, scaling (inorganic deposits), and corrosion are also governed by interfacial phenomena. Despite the importance of these interfaces, much remains to be learned about their multiscale interactions. Developing a deeper understanding of the molecular- and mesoscale phenomena at water/solid interfaces will be essential to driving innovation to address grand challenges in supplying sufficient fit-for-purpose water in the future. In this Review, we examine the current state of knowledge surrounding adsorption, reactivity, and transport in several key classes of water/solid interfaces, drawing on a synergistic combination of theory, simulation, and experiments, and provide an outlook for prioritizing strategic research directions.
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Affiliation(s)
- Edward Barry
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Applied Materials Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Raelyn Burns
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Applied Materials Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Wei Chen
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Guilhem X De Hoe
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Joan Manuel Montes De Oca
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Juan J de Pablo
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - James Dombrowski
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 United States
| | - Jeffrey W Elam
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Applied Materials Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Alanna M Felts
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 United States
| | - Giulia Galli
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - John Hack
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Qiming He
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Xiang He
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Eli Hoenig
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Aysenur Iscen
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 United States
| | - Benjamin Kash
- Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Harold H Kung
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 United States
| | - Nicholas H C Lewis
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Chong Liu
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Xinyou Ma
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Anil Mane
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Applied Materials Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Alex B F Martinson
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Karen L Mulfort
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Julia Murphy
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Kristian Mølhave
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Technical University of Denmark, Anker Engelunds Vej 1 Bygning 101A, Kgs. Lyngby, Lyngby, Hovedstaden 2800, DK Denmark
| | - Paul Nealey
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Yijun Qiao
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Vepa Rozyyev
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Applied Materials Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - George C Schatz
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 United States
| | - Steven J Sibener
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Dmitri Talapin
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - David M Tiede
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Matthew V Tirrell
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Andrei Tokmakoff
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Gregory A Voth
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Zhongyang Wang
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Zifan Ye
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Murat Yesibolati
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Technical University of Denmark, Anker Engelunds Vej 1 Bygning 101A, Kgs. Lyngby, Lyngby, Hovedstaden 2800, DK Denmark
| | - Nestor J Zaluzec
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Photon Sciences Directorate, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Seth B Darling
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
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37
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Zhang J, Cai W, Hu FX, Yang H, Liu B. Recent advances in single atom catalysts for the electrochemical carbon dioxide reduction reaction. Chem Sci 2021; 12:6800-6819. [PMID: 34123313 PMCID: PMC8153444 DOI: 10.1039/d1sc01375k] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 04/07/2021] [Indexed: 12/02/2022] Open
Abstract
The electrochemical carbon dioxide reduction reaction (CO2RR) offers a promising solution to mitigate carbon emission and at the same time generate valuable carbonaceous chemicals/fuels. Single atom catalysts (SACs) are encouraging to catalyze the electrochemical CO2RR due to the tunable electronic structure of the central metal atoms, which can regulate the adsorption energy of reactants and reaction intermediates. Moreover, SACs form a bridge between homogeneous and heterogeneous catalysts, providing an ideal platform to explore the reaction mechanism of electrochemical reactions. In this review, we first discuss the strategies for promoting the CO2RR performance, including suppression of the hydrogen evolution reaction (HER), generation of C1 products and formation of C2+ products. Then, we summarize the recent developments in regulating the structure of SACs toward the CO2RR based on the above aspects. Finally, several issues regarding the development of SACs for the CO2RR are raised and possible solutions are provided.
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Affiliation(s)
- Jincheng Zhang
- School of Chemical and Biomedical Engineering, Nanyang Technological University 62 Nanyang Drive Singapore 637459 Singapore
| | - Weizheng Cai
- School of Chemical and Biomedical Engineering, Nanyang Technological University 62 Nanyang Drive Singapore 637459 Singapore
| | - Fang Xin Hu
- Institute for Materials Science and Devices, Suzhou University of Science and Technology Suzhou 215009 China
| | - Hongbin Yang
- Institute for Materials Science and Devices, Suzhou University of Science and Technology Suzhou 215009 China
| | - Bin Liu
- School of Chemical and Biomedical Engineering, Nanyang Technological University 62 Nanyang Drive Singapore 637459 Singapore
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38
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Tung CW, Tso CH, Chen BY, Chu H, Hou CH, Chen HC, Chang MC, Shyue JJ, Lin PH, Chen HM. Heterocyclic-Additive-Activated Dinuclear Dysprosium Electrocatalysts for Heterogeneous Water Oxidation. Inorg Chem 2021; 60:6930-6938. [PMID: 33792308 DOI: 10.1021/acs.inorgchem.1c00209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Heterogeneous catalysis based on air-stable lanthanide complexes is relatively rare, especially for electrochemical water oxidation and reduction. Therefore, it is highly desired to investigate the synergy caused by cocatalysts on the lanthanide complex family for heterogeneous catalysis because of their structural diversity, air/moisture insensitivity, and easy preparation under an air atmosphere. Two mononuclear and three dinuclear dysprosium complexes containing a series of Schiff-base ligands have been demonstrated as robust electrocatalysts for triggering heterogeneous water oxidation in alkaline solution, in which the complex [Dy2(hmb)2(OAc)4]·MeCN(3) was revealed to have the best activity toward heterogeneous water oxidation among all five complexes in the present study. The molecular activation of dysprosium complexes has also been investigated with a series of N-containing heterocyclic additives [i.e., 4-(dimethylamino)pyridine (DMAP), bis(triphenylphosphine)iminium chloride ([PPN]Cl), indole, and quinoline]. In particular, the corresponding overpotential was effectively enhanced by 211 mV (at a current density of 10 mA cm-2) with the assistance of DMAP. On the basis of electrochemical and ex situ/in situ spectroscopic investigations, the best catalyst, DMAP-complex 3 on a carbon paper electrode, was confirmed with well-maintained molecular identity during heterogeneous water oxidation free of forming any dysprosium oxide and/or undesired products.
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Affiliation(s)
- Ching-Wei Tung
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Cheng-Han Tso
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Bo-Yi Chen
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan
| | - Hang Chu
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Cheng-Hung Hou
- Research Center for Applied Sciences, Academia Sinica, Taipei 106, Taiwan
| | - Hsiao-Chien Chen
- Center for Reliability Science and Technologies, Chang Gung University, Taoyuan 333, Taiwan
| | - Mu-Chieh Chang
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Jing-Jong Shyue
- Research Center for Applied Sciences, Academia Sinica, Taipei 106, Taiwan
| | - Po-Heng Lin
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan
| | - Hao Ming Chen
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
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39
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D’Agostini S, Kottrup KG, Casadevall C, Gamba I, Dantignana V, Bucci A, Costas M, Lloret-Fillol J, Hetterscheid DG. Electrocatalytic Water Oxidation with α-[Fe(mcp)(OTf) 2] and Analogues. ACS Catal 2021; 11:2583-2595. [PMID: 33815893 PMCID: PMC8016111 DOI: 10.1021/acscatal.0c05439] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/26/2021] [Indexed: 12/02/2022]
Abstract
![]()
The complex α-[Fe(mcp)(OTf)2] (mcp = N,N′-dimethyl-N,N′-bis(pyridin-2-ylmethyl)-cyclohexane-1,2-diamine
and OTf
= trifluoromethanesulfonate anion) was reported in 2011 by some of
us as an active water oxidation (WO) catalyst in the presence of sacrificial
oxidants. However, because chemical oxidants are likely to take part
in the reaction mechanism, mechanistic electrochemical studies are
critical in establishing to what extent previous studies with sacrificial
reagents have actually been meaningful. In this study, the complex
α-[Fe(mcp)(OTf)2] and its analogues were investigated
electrochemically under both acidic and neutral conditions. All the
systems under investigation proved to be electrochemically active
toward the WO reaction, with no major differences in activity despite
the structural changes. Our findings show that WO-catalyzed by mcp–iron
complexes proceeds via homogeneous species, whereas the analogous
manganese complex forms a heterogeneous deposit on the electrode surface.
Mechanistic studies show that the reaction proceeds with a different
rate-determining step (rds) than what was previously proposed in the
presence of chemical oxidants. Moreover, the different kinetic isotope
effect (KIE) values obtained electrochemically at pH 7 (KIE ∼
10) and at pH 1 (KIE = 1) show that the reaction conditions have a
remarkable effect on the rds and on the mechanism. We suggest a proton-coupled
electron transfer (PCET) as the rds under neutral conditions, whereas
at pH 1 the rds is most likely an electron transfer (ET).
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Affiliation(s)
- Silvia D’Agostini
- Leiden Institute of Chemistry, Leiden University, 2300 RA Leiden, The Netherlands
| | | | - Carla Casadevall
- Institute of Chemical Research of Catalonia, Spain (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Ilaria Gamba
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, 17003 Girona, Spain
| | - Valeria Dantignana
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, 17003 Girona, Spain
| | - Alberto Bucci
- Institute of Chemical Research of Catalonia, Spain (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
| | - Miquel Costas
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus de Montilivi, 17003 Girona, Spain
| | - Julio Lloret-Fillol
- Institute of Chemical Research of Catalonia, Spain (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluïs Companys 23, 08010 Barcelona, Spain
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40
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Optimizing noble metals exploitation in water oxidation catalysis by their incorporation in layered double hydroxides. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120161] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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41
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Zhang L, Mathew S, Hessels J, Reek JNH, Yu F. Homogeneous Catalysts Based on First-Row Transition-Metals for Electrochemical Water Oxidation. CHEMSUSCHEM 2021; 14:234-250. [PMID: 32991076 PMCID: PMC7820963 DOI: 10.1002/cssc.202001876] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/17/2020] [Indexed: 05/06/2023]
Abstract
Strategies that enable the renewable production of storable fuels (i. e. hydrogen or hydrocarbons) through electrocatalysis continue to generate interest in the scientific community. Of central importance to this pursuit is obtaining the requisite chemical (H+ ) and electronic (e- ) inputs for fuel-forming reduction reactions, which can be met sustainably by water oxidation catalysis. Further possibility exists to couple these redox transformations to renewable energy sources (i. e. solar), thus creating a carbon neutral solution for long-term energy storage. Nature uses a Mn-Ca cluster for water oxidation catalysis via multiple proton-coupled electron-transfers (PCETs) with a photogenerated bias to perform this process with TOF 100∼300 s-1 . Synthetic molecular catalysts that efficiently perform this conversion commonly utilize rare metals (e. g., Ru, Ir), whose low abundance are associated to higher costs and scalability limitations. Inspired by nature's use of 1st row transition metal (TM) complexes for water oxidation catalysts (WOCs), attempts to use these abundant metals have been intensively explored but met with limited success. The smaller atomic size of 1st row TM ions lowers its ability to accommodate the oxidative equivalents required in the 4e- /4H+ water oxidation catalysis process, unlike noble metal catalysts that perform single-site electrocatalysis at lower overpotentials (η). Overcoming the limitations of 1st row TMs requires developing molecular catalysts that exploit biomimetic phenomena - multiple-metal redox-cooperativity, PCET and second-sphere interactions - to lower the overpotential, preorganize substrates and maintain stability. Thus, the ultimate goal of developing efficient, robust and scalable WOCs remains a challenge. This Review provides a summary of previous research works highlighting 1st row TM-based homogeneous WOCs, catalytic mechanisms, followed by strategies for catalytic activity improvements, before closing with a future outlook for this field.
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Affiliation(s)
- Lu‐Hua Zhang
- School of Chemical Engineering and TechnologyHebei University of TechnologyTianjin300130P. R. China
| | - Simon Mathew
- van't Hoff Institute for Molecular SciencesUniversiteit van AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Joeri Hessels
- van't Hoff Institute for Molecular SciencesUniversiteit van AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Joost N. H. Reek
- van't Hoff Institute for Molecular SciencesUniversiteit van AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Fengshou Yu
- School of Chemical Engineering and TechnologyHebei University of TechnologyTianjin300130P. R. China
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42
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Li J, Triana CA, Wan W, Adiyeri Saseendran DP, Zhao Y, Balaghi SE, Heidari S, Patzke GR. Molecular and heterogeneous water oxidation catalysts: recent progress and joint perspectives. Chem Soc Rev 2021; 50:2444-2485. [DOI: 10.1039/d0cs00978d] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The recent synthetic and mechanistic progress in molecular and heterogeneous water oxidation catalysts highlights the new, overarching strategies for knowledge transfer and unifying design concepts.
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Affiliation(s)
- J. Li
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - C. A. Triana
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - W. Wan
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | | | - Y. Zhao
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - S. E. Balaghi
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - S. Heidari
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - G. R. Patzke
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
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43
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Domestici C, Tensi L, Boccalon E, Zaccaria F, Costantino F, Zuccaccia C, Macchioni A. Molecular and Heterogenized Cp*Ir Water Oxidation Catalysts Bearing Glyphosate and Glyphosine as Ancillary and Anchoring Ligands. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202001003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chiara Domestici
- Department of Chemistry Biology and Biotechnology University of Perugia and CIRCC Via Elce di Sotto, 8 06123 Perugia Italy
| | - Leonardo Tensi
- Department of Chemistry Biology and Biotechnology University of Perugia and CIRCC Via Elce di Sotto, 8 06123 Perugia Italy
| | - Elisa Boccalon
- Department of Industrial Engineering University of Salerno Via Giovanni Paolo II, 132 84084 Fisciano SA Italy
| | - Francesco Zaccaria
- Department of Chemistry Biology and Biotechnology University of Perugia and CIRCC Via Elce di Sotto, 8 06123 Perugia Italy
| | - Ferdinando Costantino
- Department of Chemistry Biology and Biotechnology University of Perugia and CIRCC Via Elce di Sotto, 8 06123 Perugia Italy
| | - Cristiano Zuccaccia
- Department of Chemistry Biology and Biotechnology University of Perugia and CIRCC Via Elce di Sotto, 8 06123 Perugia Italy
| | - Alceo Macchioni
- Department of Chemistry Biology and Biotechnology University of Perugia and CIRCC Via Elce di Sotto, 8 06123 Perugia Italy
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44
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Hessels J, Masferrer‐Rius E, Yu F, Detz RJ, Klein Gebbink RJM, Reek JNH. Nickel is a Different Pickle: Trends in Water Oxidation Catalysis for Molecular Nickel Complexes. CHEMSUSCHEM 2020; 13:6629-6634. [PMID: 33090703 PMCID: PMC7756549 DOI: 10.1002/cssc.202002164] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Indexed: 06/11/2023]
Abstract
The development of novel water oxidation catalysts is important in the context of renewable fuels production. Ligand design is one of the key tools to improve the activity and stability of molecular catalysts. The establishment of ligand design rules can facilitate the development of improved molecular catalysts. In this paper it is shown that chemical oxidants can be used to probe oxygen evolution activity for nickel-based systems, and trends are reported that can improve future ligand design. Interestingly, different ligand effects were observed in comparison to other first-row transition metal complexes. For example, nickel complexes with secondary amine donors were more active than with tertiary amine donors, which is the opposite for iron complexes. The incorporation of imine donor groups in a cyclam ligand resulted in the fastest and most durable nickel catalyst of our series, achieving oxygen evolution turnover numbers up to 380 and turnover frequencies up to 68 min-1 in a pH 5.0 acetate buffer using Oxone as oxidant. Initial kinetic experiments with this catalyst revealed a first order in chemical oxidant and a half order in catalyst. This implies a rate-determining oxidation step from a dimeric species that needs to break up to generate the active catalyst. These findings lay the foundation for the rational design of molecular nickel catalysts for water oxidation and highlight that catalyst design rules are not generally applicable for different metals.
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Affiliation(s)
- Joeri Hessels
- Homogeneous, Supramolecular and Bio-Inspired Catalysis, Van ‘t Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Eduard Masferrer‐Rius
- Organic Chemistry & Catalysis, Debye Institute for Nanomaterials ScienceUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Fengshou Yu
- Homogeneous, Supramolecular and Bio-Inspired Catalysis, Van ‘t Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Remko J. Detz
- Current address: TNO Energy Transition, Energy Transition StudiesRadarweg 601043 NTAmsterdamThe Netherlands
| | - Robertus J. M. Klein Gebbink
- Organic Chemistry & Catalysis, Debye Institute for Nanomaterials ScienceUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Joost N. H. Reek
- Homogeneous, Supramolecular and Bio-Inspired Catalysis, Van ‘t Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
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45
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Mondal B, Chattopadhyay S, Dey S, Mahammed A, Mittra K, Rana A, Gross Z, Dey A. Elucidation of Factors That Govern the 2e -/2H + vs 4e -/4H + Selectivity of Water Oxidation by a Cobalt Corrole. J Am Chem Soc 2020; 142:21040-21049. [PMID: 33259190 DOI: 10.1021/jacs.0c08654] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Considering the importance of water splitting as the best solution for clean and renewable energy, the worldwide efforts for development of increasingly active molecular water oxidation catalysts must be accompanied by studies that focus on elucidating the mode of actions and catalytic pathways. One crucial challenge remains the elucidation of the factors that determine the selectivity of water oxidation by the desired 4e-/4H+ pathway that leads to O2 rather than by 2e-/2H+ to H2O2. We now show that water oxidation with the cobalt-corrole CoBr8 as electrocatalyst affords H2O2 as the main product in homogeneous solutions, while heterogeneous water oxidation by the same catalyst leads exclusively to oxygen. Experimental and computation-based investigations of the species formed during the process uncover the formation of a Co(III)-superoxide intermediate and its preceding high-valent Co-oxyl complex. The competition between the base-catalyzed hydrolysis of Co(III)-hydroperoxide [Co(III)-OOH]- to release H2O2 and the electrochemical oxidation of the same to release O2 via [Co(III)-O2•]- is identified as the key step determining the selectivity of water oxidation.
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Affiliation(s)
- Biswajit Mondal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Samir Chattopadhyay
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Subal Dey
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Atif Mahammed
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 3200008, Israel
| | - Kaustuv Mittra
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Atanu Rana
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
| | - Zeev Gross
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 3200008, Israel
| | - Abhishek Dey
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata 700032, India
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46
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Hessels J, Yu F, Detz RJ, Reek JNH. Potential- and Buffer-Dependent Catalyst Decomposition during Nickel-Based Water Oxidation Catalysis. CHEMSUSCHEM 2020; 13:5625-5631. [PMID: 32959962 PMCID: PMC7702101 DOI: 10.1002/cssc.202001428] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 09/18/2020] [Indexed: 06/11/2023]
Abstract
The production of hydrogen by water electrolysis benefits from the development of water oxidation catalysts. This development process can be aided by the postulation of design rules for catalytic systems. The analysis of the reactivity of molecular complexes can be complicated by their decomposition under catalytic conditions into nanoparticles that may also be active. Such a misinterpretation can lead to incorrect design rules. In this study, the nickel-based water oxidation catalyst [NiII (meso-L)](ClO4 )2 , which was previously thought to operate as a molecular catalyst, is found to decompose to form a NiOx layer in a pH 7.0 phosphate buffer under prolonged catalytic conditions, as indicated by controlled potential electrolysis, electrochemical quartz crystal microbalance, and X-ray photoelectron spectroscopy measurements. Interestingly, the formed NiOx layer desorbs from the surface of the electrode under less anodic potentials. Therefore, no nickel species can be detected on the electrode after electrolysis. Catalyst decomposition is strongly dependent on the pH and buffer, as there is no indication of NiOx layer formation at pH 6.5 in phosphate buffer nor in a pH 7.0 acetate buffer. Under these conditions, the activity stems from a molecular species, but currents are much lower. This study demonstrates the importance of in situ characterization methods for catalyst decomposition and metal oxide layer formation, and previously proposed design elements for nickel-based catalysts need to be revised.
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Affiliation(s)
- Joeri Hessels
- HomogeneousSupramolecular and Bio-Inspired CatalysisVan ‘t Hoff institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdam (TheNetherlands
| | - Fengshou Yu
- HomogeneousSupramolecular and Bio-Inspired CatalysisVan ‘t Hoff institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdam (TheNetherlands
| | - Remko J. Detz
- TNO Energy Transition, Energy Transition StudiesRadarweg 601043 NTAmsterdam (TheNetherlands
| | - Joost N. H. Reek
- HomogeneousSupramolecular and Bio-Inspired CatalysisVan ‘t Hoff institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdam (TheNetherlands
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Domestici C, Tensi L, Zaccaria F, Kissimina N, Valentini M, D'Amato R, Costantino F, Zuccaccia C, Macchioni A. Molecular and heterogenized dinuclear Ir-Cp* water oxidation catalysts bearing EDTA or EDTMP as bridging and anchoring ligands. Sci Bull (Beijing) 2020; 65:1614-1625. [PMID: 36659037 DOI: 10.1016/j.scib.2020.06.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 05/16/2020] [Accepted: 06/01/2020] [Indexed: 01/21/2023]
Abstract
The development of efficient water oxidation catalysts (WOCs) is of key importance in order to drive sustainable reductive processes aimed at producing renewable fuels. Herein, two novel dinuclear complexes, [(Cp*Ir)2(μ-κ3-O,N,O-H4-EDTMP)] (Ir-H4-EDTMP, H4-EDTMP4- = ethylenediamine tetra(methylene phosphonate)) and [(Cp*Ir)2(μ-κ3-O,N,O-EDTA)] (Ir-EDTA, EDTA4- = ethylenediaminetetraacetate), were synthesized and completely characterized in solution, by multinuclear and multidimensional NMR spectroscopy, and in the solid state, by single crystal X-Ray diffraction. They were supported onto rutile TiO2 nanocrystals obtaining Ir-H4-EDTMP@TiO2 and Ir-EDTA@TiO2 hybrid materials. Both molecular complexes and hybrid materials were found to be efficient catalysts for WO driven by NaIO4, providing almost quantitative yields, and TON values only limited by the amount of NaIO4 used. As for the molecular catalysts, Ir-H4-EDTMP (TOF up to 184 min-1) exhibited much higher activity than Ir-EDTA (TOF up to 19 min-1), likely owing to the higher propensity of the former to generate a coordination vacancy through the dissociation of a Ir-OP bond (2.123 Å, significantly longer than Ir-OC, 2.0913 Å), which is a necessary step to activate these saturated complexes. Ir-H4-EDTMP@TiO2 (up to 33 min-1) and Ir-EDTA@TiO2 (up to 41 min-1) hybrid materials showed similar activity that was only marginally reduced in the second and third catalytic runs carried out after having separated the supernatant, which did not show any sign of activity, instead. The observed TOF values for hybrid materials are higher than those reported for analogous systems deriving from heterogenized mononuclear complexes. This suggests that supporting dinuclear molecular precursors could be a successful strategy to obtain efficient heterogenized water oxidation catalysts.
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Affiliation(s)
- Chiara Domestici
- Department of Chemistry, Biology and Biotechnology, University of Perugia and CIRCC, Perugia 06123, Italy
| | - Leonardo Tensi
- Department of Chemistry, Biology and Biotechnology, University of Perugia and CIRCC, Perugia 06123, Italy
| | - Francesco Zaccaria
- Department of Chemistry, Biology and Biotechnology, University of Perugia and CIRCC, Perugia 06123, Italy.
| | - Nade Kissimina
- Department of Chemistry, Biology and Biotechnology, University of Perugia and CIRCC, Perugia 06123, Italy; École Supérieure d'Ingénieurs de Rennes, University of Rennes 1, Rennes 35042, France
| | | | - Roberto D'Amato
- Department of Chemistry, Biology and Biotechnology, University of Perugia and CIRCC, Perugia 06123, Italy
| | - Ferdinando Costantino
- Department of Chemistry, Biology and Biotechnology, University of Perugia and CIRCC, Perugia 06123, Italy.
| | - Cristiano Zuccaccia
- Department of Chemistry, Biology and Biotechnology, University of Perugia and CIRCC, Perugia 06123, Italy.
| | - Alceo Macchioni
- Department of Chemistry, Biology and Biotechnology, University of Perugia and CIRCC, Perugia 06123, Italy.
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48
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Hoque MA, Gil-Sepulcre M, de Aguirre A, Elemans JAAW, Moonshiram D, Matheu R, Shi Y, Benet-Buchholz J, Sala X, Malfois M, Solano E, Lim J, Garzón-Manjón A, Scheu C, Lanza M, Maseras F, Gimbert-Suriñach C, Llobet A. Water oxidation electrocatalysis using ruthenium coordination oligomers adsorbed on multiwalled carbon nanotubes. Nat Chem 2020; 12:1060-1066. [PMID: 32989272 DOI: 10.1038/s41557-020-0548-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 08/04/2020] [Indexed: 12/27/2022]
Abstract
Photoelectrochemical cells that utilize water as a source of electrons are one of the most attractive solutions for the replacement of fossil fuels by clean and sustainable solar fuels. To achieve this, heterogeneous water oxidation catalysis needs to be mastered and properly understood. The search continues for a catalyst that is stable at the surface of electro(photo)anodes and can efficiently perform this reaction at the desired neutral pH. Here, we show how oligomeric Ru complexes can be anchored on the surfaces of graphitic materials through CH-π interactions between the auxiliary ligands bonded to Ru and the hexagonal rings of the graphitic surfaces, providing control of their molecular coverage. These hybrid molecular materials behave as molecular electroanodes that catalyse water oxidation to dioxygen at pH 7 with high current densities. This strategy for the anchoring of molecular catalysts on graphitic surfaces can potentially be extended to other transition metals and other catalytic reactions.
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Affiliation(s)
- Md Asmaul Hoque
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Tarragona, Spain
| | - Marcos Gil-Sepulcre
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Tarragona, Spain
| | - Adiran de Aguirre
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Tarragona, Spain
| | | | - Dooshaye Moonshiram
- Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nanociencia), Madrid, Spain
| | - Roc Matheu
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Tarragona, Spain
| | - Yuanyuan Shi
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Tarragona, Spain.,Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nanoscience and Technology, Suzhou, China
| | - Jordi Benet-Buchholz
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Tarragona, Spain
| | - Xavier Sala
- Departament de Química, Universitat Autonoma de Barcelona, Barcelona, Spain
| | - Marc Malfois
- NCD-SWEET beamline, ALBA synchrotron light source, Barcelona, Spain
| | - Eduardo Solano
- NCD-SWEET beamline, ALBA synchrotron light source, Barcelona, Spain
| | - Joohyun Lim
- Max-Planck-Institut für Eisenforschung GmbH, Düsseldorf, Germany
| | | | - Christina Scheu
- Max-Planck-Institut für Eisenforschung GmbH, Düsseldorf, Germany
| | - Mario Lanza
- Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nanoscience and Technology, Suzhou, China.
| | - Feliu Maseras
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Tarragona, Spain. .,Departament de Química, Universitat Autonoma de Barcelona, Barcelona, Spain.
| | - Carolina Gimbert-Suriñach
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Tarragona, Spain.
| | - Antoni Llobet
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Tarragona, Spain. .,Departament de Química, Universitat Autonoma de Barcelona, Barcelona, Spain.
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49
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Desnoyer AN, Nicolay A, Rios P, Ziegler MS, Tilley TD. Bimetallics in a Nutshell: Complexes Supported by Chelating Naphthyridine-Based Ligands. Acc Chem Res 2020; 53:1944-1956. [PMID: 32878429 DOI: 10.1021/acs.accounts.0c00382] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Bimetallic motifs are a structural feature common to some of the most effective and synthetically useful catalysts known, including in the active sites of many metalloenzymes and on the surfaces of industrially relevant heterogeneous materials. However, the complexity of these systems often hampers detailed studies of their fundamental properties. To glean valuable mechanistic insight into how these catalysts function, this research group has prepared a family of dinucleating 1,8-naphthyridine ligands that bind two first-row transition metals in close proximity, originally designed to help mimic the proposed active site of metal oxide surfaces. Of the various bimetallic combinations examined, dicopper(I) is particularly versatile, as neutral bridging ligands adopt a variety of different binding modes depending on the configuration of frontier orbitals available to interact with the Cu centers. Organodicopper complexes are readily accessible, either through the traditional route of salt metathesis or via the activation of tetraarylborate anions through aryl group abstraction by a dicopper(I) unit. The resulting bridging aryl complexes engage in C-H bond activations, notably with terminal alkynes to afford bridging alkynyl species. The μ-hydrocarbyl complexes are surprisingly tolerant of water and elevated temperatures. This stability was leveraged to isolate a species that typically represents a fleeting intermediate in Cu-catalyzed azide-alkyne coupling (CuAAC); reaction of a bridging alkynyl complex with an organic azide afforded the first example of a well-defined, symmetrically bridged dicopper triazolide. This complex was shown to be an intermediate during CuAAC, providing support for a proposed bimetallic mechanism. These platforms are not limited to formally low oxidation states; chemical oxidation of the hydrocarbyl complexes cleanly results in formation of mixed valence CuICuII complexes with varying degrees of distortion in both the bridging moiety and the dicopper core. Higher oxidation states, e.g., dicopper(II), are easily accessed via oxidation of a dicopper(I) compound with air to give a CuII2(μ-OH)2 complex. Reduction of this compound with silanes resulted in the unexpected formation of pentametallic copper(I) dihydride clusters or trimetallic monohydride complexes, depending on the nature of the silane. Finally, development of an unsymmetrical naphthyridine ligand with mixed donor side-arms enables selective synthesis of an isostructural series of six heterobimetallic complexes, demonstrating the power of ligand design in the preparation of heterometallic assemblies.
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Affiliation(s)
- Addison N. Desnoyer
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720-1460, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Amélie Nicolay
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720-1460, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Pablo Rios
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720-1460, United States
| | - Micah S. Ziegler
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720-1460, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - T. Don Tilley
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720-1460, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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50
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Witzke RJ, Chapovetsky A, Conley MP, Kaphan DM, Delferro M. Nontraditional Catalyst Supports in Surface Organometallic Chemistry. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03350] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ryan J. Witzke
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Alon Chapovetsky
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Matthew P. Conley
- Department of Chemistry, University of California, Riverside, Riverside, California 92521, United States
| | - David M. Kaphan
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Massimiliano Delferro
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
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