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Edirisinghe EAKD, Haddad C, Ostrowski AD. Controlled Delivery and Photopatterning of Mechanical Properties in Polysaccharide Hydrogels Using Vanadium Coordination and Photochemistry. ACS APPLIED BIO MATERIALS 2022; 5:4827-4837. [PMID: 36149805 DOI: 10.1021/acsabm.2c00529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Incorporation of the transition metal ion V(V) into hydrogels has been used to impart photoresponsive behavior, which was used to tune materials properties during light irradiation. The photoreaction in QHE-cellulose/agarose hydrogels coordinated with vanadium was evidenced by a clear color change of yellow to blue through a green intermediate. This color change was attributed to the reduction of V(V) to V(IV) as described in our previous work. A concomitant oxidative breakdown of the polysaccharide chain was noticeable upon the reduction of V(V) with a decrease in stiffness (G') of the hydrogel material. This reduction of the metal ion and breakdown of polysaccharide chain induced irreversible changes in the microstructure of the hydrogel, enabling the controlled delivery of V(IV) and/or encapsulated cargo. Scanning electron microscopy studies showed an increase in pore sizes and guest cavity formation during irradiation. In addition to the significant drop in mechanical properties like storage and loss modulus in the gel materials, a viscosity drop in the polymer solution was observed through irradiation, indicating breakdown of the polysaccharide chain. A photomask can be used to create discrete patterns on these materials upon irradiation.
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Affiliation(s)
- E A Kalani D Edirisinghe
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Carina Haddad
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Alexis D Ostrowski
- Department of Chemistry and Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
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2
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Huang C, Xie L, Zhang H, Wang H, Hu J, Liang Z, Jiang Z, Song F. Feasible Structure Manipulation of Vanadium Selenide into VSe 2 on Au(111). NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2518. [PMID: 35893485 PMCID: PMC9332180 DOI: 10.3390/nano12152518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/12/2022] [Accepted: 07/13/2022] [Indexed: 11/28/2022]
Abstract
Vanadium diselenide (VSe2), a member of the transition metal dichalcogenides (TMDs), is proposed with intriguing properties. However, a comprehensive investigation of VSe2 (especially regarding on the growth mechanism) is still lacking. Herein, with the molecular beam epitaxy (MBE) measures frequently utilized in surface science, we have successfully synthesized the single-layer VSe2 on Au(111) and revealed its structural transformation using a combination of scanning tunneling microscopy (STM) and density functional theory (DFT). Initially, formation of the honeycomb structure is observed with the moiré periodicity, which is assigned to VSe2. Followed by stepwise annealing, defective structures with streaked patterns start to emerge due to the depletion of Se, which can be reversed to the pristine VSe2 by resupplying Se. With more V than Se deposited, a new compound that has no bulk analogue is discovered on Au(111), which could be transformed back to VSe2 after providing excessive Se. As the realization of manipulating V selenide phases is subtly determined by the relative ratio of V to Se and post-annealing treatments, this report provides useful insights toward fundamental understanding of the growth mechanism of TMDs and might promote the wide application of VSe2 in related fields such as catalysis and nanoelectronics.
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Affiliation(s)
- Chaoqin Huang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201000, China; (C.H.); (H.Z.); (H.W.); (J.H.); (Z.J.)
- University of Chinese Academy of Sciences, Beijing 101000, China
| | - Lei Xie
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China;
| | - Huan Zhang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201000, China; (C.H.); (H.Z.); (H.W.); (J.H.); (Z.J.)
- University of Chinese Academy of Sciences, Beijing 101000, China
| | - Hongbing Wang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201000, China; (C.H.); (H.Z.); (H.W.); (J.H.); (Z.J.)
- University of Chinese Academy of Sciences, Beijing 101000, China
| | - Jinping Hu
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201000, China; (C.H.); (H.Z.); (H.W.); (J.H.); (Z.J.)
- University of Chinese Academy of Sciences, Beijing 101000, China
| | - Zhaofeng Liang
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China;
| | - Zheng Jiang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201000, China; (C.H.); (H.Z.); (H.W.); (J.H.); (Z.J.)
- University of Chinese Academy of Sciences, Beijing 101000, China
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China;
| | - Fei Song
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201000, China; (C.H.); (H.Z.); (H.W.); (J.H.); (Z.J.)
- University of Chinese Academy of Sciences, Beijing 101000, China
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China;
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Seyed-Talebi SM, Cheraghizade M, Beheshtian J, Kuan CH, Diau EWG. Electrodeposition of Co xNiV yO z Ternary Nanopetals on Bare and rGO-Coated Nickel Foam for High-Performance Supercapacitor Application. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1894. [PMID: 35683749 PMCID: PMC9182510 DOI: 10.3390/nano12111894] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 05/26/2022] [Accepted: 05/28/2022] [Indexed: 12/11/2022]
Abstract
We report a simple strategy to grow a novel cobalt nickel vanadium oxide (CoxNiVyOz) nanocomposite on bare and reduced-graphene-oxide (rGO)-coated nickel foam (Ni foam) substrates. In this way, the synthesized graphene oxide is coated on Ni foam, and reduced electrochemically with a negative voltage to prepare a more conductive rGO-coated Ni foam substrate. The fabricated electrodes were characterized with a field-emission scanning electron microscope (FESEM), energy-dispersive X-ray spectra (EDX), X-ray photoelectron spectra (XPS), and Fourier-transform infrared (FTIR) spectra. The electrochemical performance of these CoxNiVyOz-based electrode materials deposited on rGO-coated Ni foam substrate exhibited superior specific capacitance 701.08 F/g, which is more than twice that of a sample coated on bare Ni foam (300.31 F/g) under the same experimental conditions at current density 2 A/g. Our work highlights the effect of covering the Ni foam surface with a rGO film to expedite the specific capacity of the supercapacitors. Despite the slightly decreased stability of a CoxNiVyOz-based electrode coated on a Ni foam@rGO substrate, the facile synthesis, large specific capacitance, and preservation of 92% of the initial capacitance, even after running 5500 cyclic voltammetric (CV) scans, indicate that the CoxNiVyOz-based electrode is a promising candidate for high-performance energy-storage devices.
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Affiliation(s)
| | - Mohsen Cheraghizade
- Advanced Surface Engineering and Nano Materials Research Center, Department of Electrical Engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
| | - Javad Beheshtian
- Department of Chemistry, Shahid Rajaee Teacher Training University, Tehran, Iran;
| | - Chun-Hsiao Kuan
- Department of Applied Chemistry, National Yang-Ming Chiao Tung University, Hsinchu 300093, Taiwan
| | - Eric Wei-Guang Diau
- Department of Applied Chemistry, National Yang-Ming Chiao Tung University, Hsinchu 300093, Taiwan
- Center of Emergent Functional Matter Science, National Yang-Ming Chiao Tung University, Hsinchu 300093, Taiwan
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4
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Abstract
Abstract
Scanning tunneling microscopy (STM) has gained increasing attention in the field of electrocatalysis due to its ability to reveal electrocatalyst surface structures down to the atomic level in either ultra-high-vacuum (UHV) or harsh electrochemical conditions. The detailed knowledge of surface structures, surface electronic structures, surface active sites as well as the interaction between surface adsorbates and electrocatalysts is highly beneficial in the study of electrocatalytic mechanisms and for the rational design of electrocatalysts. Based on this, this review will discuss the application of STM in the characterization of electrocatalyst surfaces and the investigation of electrochemical interfaces between electrocatalyst surfaces and reactants. Based on different operating conditions, UHV-STM and STM in electrochemical environments (EC-STM) are discussed separately. This review will also present emerging techniques including high-speed EC-STM, scanning noise microscopy and tip-enhanced Raman spectroscopy.
Graphic Abstract
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5
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Acosta D, Magaña C, Hernández F, Chavez-Esquivel G, Cortes-Cordova DE, Huerta L, Valdés-Martínez OU. Temperature effects on VO2 thin films deposited by RF sputtering for the degradation by photocatalysis of methylene blue and naproxen. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2020. [DOI: 10.1515/ijcre-2019-0214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe temperature effect on VO2 thin films synthesized by RF sputtering on their morphological, optical, electrical properties and their activity in the photocatalytic degradation of methylene blue and naproxen was studied. Characterization results presented microcrystallinity for VO2 films treated at 50 and 100 °C. Nevertheless, the untreated films and films treated at 200 °C revealed characteristic peaks of monoclinic and tetragonal phases. SEM micrographs with elemental mapping of VO2 films showed granular morphology and a good oxygen dispersion along the film surface, possibly due to a restructuring on the film occasioned by particle coalescence and vanadium oxide island conformation. The electronic transmittance spectra showed the d–d transition characteristic for the square-pyramidal stereochemistry of vanadium (IV) ion, where the optical band interval was high for films treated at 50 °C. Raman spectroscopy results presented an increment in the V = O/V–O ratio as a function of temperature, probably related to superficial vanadium species formation. X-ray spectroscopy results showed the Onon-lattice/Olattice ratio values higher for films treated at 50 °C than the other films, related to an oxide character. The V 2p fit results presented V4+, V5+ regions and satellites for VO2 films thermal treated at 50 °C. The electrical resistivity on the VO2 films decreased as a function of temperature. Finally, the VO2 films thermal treated at 50 °C had higher photocatalytic activity in the degradation of methylene blue and naproxen compared to the other VO2 films, possibly associated with high electron mobility between the surface and the bulk, where the oxygen vacancies act as recombination sites for the e−/h+ pairs during photocatalytic degradation.
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Affiliation(s)
- Dwight Acosta
- Instituto de Física, Universidad Nacional Autónoma de México, Ciudad Universitaria, Circuito de la Investigación Científica, Coyoacán, Mexico City, 04510, Mexico
| | - Carlos Magaña
- Instituto de Física, Universidad Nacional Autónoma de México, Ciudad Universitaria, Circuito de la Investigación Científica, Coyoacán, Mexico City, 04510, Mexico
| | - Francisco Hernández
- Instituto de Física, Universidad Nacional Autónoma de México, Ciudad Universitaria, Circuito de la Investigación Científica, Coyoacán, Mexico City, 04510, Mexico
| | - Gerardo Chavez-Esquivel
- Instituto de Física, Universidad Nacional Autónoma de México, Ciudad Universitaria, Circuito de la Investigación Científica, Coyoacán, Mexico City, 04510, Mexico
- Departamento de Ciencias Básicas, División de Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana Azcapotzalco, Av. San Pablo 180, Col. Reynosa Tamaulipas, Azcapotzalco, Mexico City, 02200, Mexico
| | - Daniel Eduardo Cortes-Cordova
- Departamento de Ciencias Básicas, División de Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana Azcapotzalco, Av. San Pablo 180, Col. Reynosa Tamaulipas, Azcapotzalco, Mexico City, 02200, Mexico
| | - Lázaro Huerta
- Instituto de Materiales, Universidad Nacional Autónoma de México, Circuito Exterior S/N Circuito de la, Investigación Científica, Cuidad Universitaria, Coyoacán, Mexico City, 04510, Mexico
| | - Omar Uriel Valdés-Martínez
- Departamento de Ingeniería de Procesos e Hidráulica, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco No. 86, Col. Leyes de Reforma 1a Secc., Iztapalapa, Mexico City, 09310, Mexico
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6
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Yalcin O, Molinari Erwin JE, Gerceker D, Onal I, Wachs IE. Role of Local Structure on Catalytic Reactivity: Comparison of Methanol Oxidation by Aqueous Bioinorganic Enzyme Mimic (Vanadium Haloperoxidase) and Vanadia-Based Heterogeneous Catalyst (Supported VO4/SiO2). ACS Catal 2019. [DOI: 10.1021/acscatal.9b02450] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ozgen Yalcin
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
- Department of Chemical Engineering, Middle East Technical University, Ankara 06800, Turkey
| | - Julie E. Molinari Erwin
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Duygu Gerceker
- Department of Chemical Engineering, Middle East Technical University, Ankara 06800, Turkey
| | - Isik Onal
- Department of Chemical Engineering, Middle East Technical University, Ankara 06800, Turkey
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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7
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Lasserus M, Knez D, Lackner F, Schnedlitz M, Messner R, Schennach D, Kothleitner G, Hofer F, Hauser AW, Ernst WE. Synthesis of nanosized vanadium(v) oxide clusters below 10 nm. Phys Chem Chem Phys 2019; 21:21104-21108. [PMID: 31528952 DOI: 10.1039/c9cp04357h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Vanadium oxide clusters with a mean diameter below 10 nm are investigated by high resolution Scanning Transmission Electron Microscopy (STEM), Electron Energy Loss Spectroscopy (EELS) and UV-vis absorption spectroscopy. The clusters are synthesised by sublimation from bulk vanadium(v) oxide, in combination with a pick-up by superfluid helium droplets. The latter act as reaction chambers which enable cluster growth under fully inert and solvent-free conditions. High-resolution STEM images of deposited vanadium oxide particles allowing for the determination of lattice constants, clearly indicate a dominating presence of V2O5. This finding is further supported by UV-vis absorption spectra of nanoparticles after deposition on fused silica substrates, which indicates that the oxidation state of the material is preserved over the entire process. From the results of the UV-vis measurement, the band gap of the nanosized V2O5 could be determined to be 3.3 eV. The synthesis approach provides a route to clean V2O5 clusters as it does not involve any surfactant or solvents, which is crucial for an unbiased measurement of intrinsic catalyst properties.
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Affiliation(s)
- Maximilian Lasserus
- Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austria.
| | - Daniel Knez
- Institute for Electron Microscopy and Nanoanalysis & Graz Centre for Electron Microscopy, Graz University of Technology, Steyrergasse 17, A-8010 Graz, Austria
| | - Florian Lackner
- Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austria.
| | - Martin Schnedlitz
- Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austria.
| | - Roman Messner
- Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austria.
| | - Daniel Schennach
- Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austria.
| | - Gerald Kothleitner
- Institute for Electron Microscopy and Nanoanalysis & Graz Centre for Electron Microscopy, Graz University of Technology, Steyrergasse 17, A-8010 Graz, Austria
| | - Ferdinand Hofer
- Institute for Electron Microscopy and Nanoanalysis & Graz Centre for Electron Microscopy, Graz University of Technology, Steyrergasse 17, A-8010 Graz, Austria
| | - Andreas W Hauser
- Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austria.
| | - Wolfgang E Ernst
- Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austria.
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8
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Lasserus M, Schnedlitz M, Messner R, Lackner F, Ernst WE, Hauser AW. Vanadium(V) oxide clusters synthesized by sublimation from bulk under fully inert conditions. Chem Sci 2019; 10:3473-3480. [PMID: 30996937 PMCID: PMC6432649 DOI: 10.1039/c8sc05699d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 02/23/2019] [Indexed: 12/01/2022] Open
Abstract
While laser ablation in combination with electron impact mass spectroscopy yield numerous fragments and reaction products, helium-mediated mass analysis reveals the sublimation from bulk in units of (V2O5)2.
Oxide nanoparticles in the size range of a few nanometers are typically synthesized in solution or via laser ablation techniques, which open numerous channels for structural change via chemical reactions or fragmentation processes. In this work, neutral vanadium oxide nanoparticles are instead synthesized by sublimation from bulk in combination with a pickup by superfluid helium droplets. Mass spectroscopy measurements clearly demonstrate the preservation of the bulk stoichiometric ratio of vanadium to oxygen in He-grown nanoparticles, indicating a tendency towards tetrahedral coordination of the vanadium centers in finite geometries. This unexpected finding opens up new possibilities for a combined on-the-fly synthesis of nanoparticles consisting of metal and metal-oxide layers. In comparison to mass spectra obtained via direct ionization of vanadium oxide in an effusive beam, where strong fragmentation occurred, we observe a clear preference for (V2O5)n oligomers with even n inside the He nanodroplets, which is further investigated and explained using the electronic structure theory.
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Affiliation(s)
- Maximilian Lasserus
- Institute of Experimental Physics , Graz University of Technology , Petersgasse 16 , A-8010 Graz , Austria . ; ; ; Tel: +43 316 873 8157 ; Tel: +43 316 873 8140
| | - Martin Schnedlitz
- Institute of Experimental Physics , Graz University of Technology , Petersgasse 16 , A-8010 Graz , Austria . ; ; ; Tel: +43 316 873 8157 ; Tel: +43 316 873 8140
| | - Roman Messner
- Institute of Experimental Physics , Graz University of Technology , Petersgasse 16 , A-8010 Graz , Austria . ; ; ; Tel: +43 316 873 8157 ; Tel: +43 316 873 8140
| | - Florian Lackner
- Institute of Experimental Physics , Graz University of Technology , Petersgasse 16 , A-8010 Graz , Austria . ; ; ; Tel: +43 316 873 8157 ; Tel: +43 316 873 8140
| | - Wolfgang E Ernst
- Institute of Experimental Physics , Graz University of Technology , Petersgasse 16 , A-8010 Graz , Austria . ; ; ; Tel: +43 316 873 8157 ; Tel: +43 316 873 8140
| | - Andreas W Hauser
- Institute of Experimental Physics , Graz University of Technology , Petersgasse 16 , A-8010 Graz , Austria . ; ; ; Tel: +43 316 873 8157 ; Tel: +43 316 873 8140
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9
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Lai JK, Wachs IE. A Perspective on the Selective Catalytic Reduction (SCR) of NO with NH3 by Supported V2O5–WO3/TiO2 Catalysts. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01357] [Citation(s) in RCA: 244] [Impact Index Per Article: 40.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jun-Kun Lai
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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11
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Zhu R, Chatzidimitriou A, Bond JQ. Influence of vanadate structure and support identity on catalytic activity in the oxidative cleavage of methyl ketones. J Catal 2018. [DOI: 10.1016/j.jcat.2017.12.034] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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13
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14
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Feiten FE, Kuhlenbeck H, Freund HJ. Reducing the V2O3(0001) surface through electron bombardment--a quantitative structure determination with I/V-LEED. Phys Chem Chem Phys 2016; 18:3124-30. [PMID: 26741732 DOI: 10.1039/c5cp07390a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The (0001) surface of vanadium sesquioxide, V2O3, is terminated by vanadyl groups under standard ultra high vacuum preparation conditions. Reduction with electrons results in a chemically highly active surface with a well-defined LEED pattern indicating a high degree of order. In this work we report the first quantitative structure determination of a reduced V2O3(0001) surface. We identify two distinct surface phases by STM, one well ordered and one less well ordered. I/V-LEED shows the ordered phase to be terminated by a single vanadium atom per surface unit cell on a quasi-hexagonal oxygen layer with three atoms per two-dimensional unit cell. Furthermore we compare the method of surface reduction via electron bombardment with the deposition of V onto a vanadyl terminated film. The latter procedure was previously proposed to result in a structure with three surface vanadium atoms in the 2D unit cell and we confirm this with simulated STM images.
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Affiliation(s)
- Felix E Feiten
- Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany.
| | - Helmut Kuhlenbeck
- Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany.
| | - Hans-Joachim Freund
- Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany.
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15
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Hesse M, von Boehn B, Locatelli A, Sala A, Menteş TO, Imbihl R. Island Ripening via a Polymerization-Depolymerization Mechanism. PHYSICAL REVIEW LETTERS 2015; 115:136102. [PMID: 26451569 DOI: 10.1103/physrevlett.115.136102] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Indexed: 06/05/2023]
Abstract
In catalytic methanol oxidation on ultrathin vanadium oxide layers on Rh(111) (Θ_{V}≈0.2 monolayer equivalent) we observe a 2D ripening of the VO_{x} islands that is controlled by the catalytic reaction. Neighboring VO_{x} islands move under reaction conditions towards each other and coalesce. The motion and the coalescence of the islands are explained by a polymerization-depolymerization equilibrium that is sensitive to gradients in the adsorbate coverages.
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Affiliation(s)
- Martin Hesse
- Institut für Physikalische Chemie und Elektrochemie, Leibniz-Universität Hannover, Callinstrasse 3-3a, D-30167 Hannover, Germany
| | - Bernhard von Boehn
- Institut für Physikalische Chemie und Elektrochemie, Leibniz-Universität Hannover, Callinstrasse 3-3a, D-30167 Hannover, Germany
| | - Andrea Locatelli
- Elettra-Sincrotrone Trieste, S.C.p.A., S.S. 14, km 163.5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - Alessandro Sala
- Elettra-Sincrotrone Trieste, S.C.p.A., S.S. 14, km 163.5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - Tevfik O Menteş
- Elettra-Sincrotrone Trieste, S.C.p.A., S.S. 14, km 163.5 in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - Ronald Imbihl
- Institut für Physikalische Chemie und Elektrochemie, Leibniz-Universität Hannover, Callinstrasse 3-3a, D-30167 Hannover, Germany
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16
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Wu Z. Multi-wavelength Raman spectroscopy study of supported vanadia catalysts: Structure identification and quantification. CHINESE JOURNAL OF CATALYSIS 2014. [DOI: 10.1016/s1872-2067(14)60082-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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17
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Liu J, Mohamed F, Sauer J. Selective oxidation of propene by vanadium oxide monomers supported on silica. J Catal 2014. [DOI: 10.1016/j.jcat.2014.06.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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18
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Hendrickx MF, Tran VT. Elucidating the Electronic Structures of the Ground States of the VO2–/0 Clusters: Synergism between Computation and Experiment. J Chem Theory Comput 2014; 10:4037-44. [DOI: 10.1021/ct500526m] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Marc F.A. Hendrickx
- Afdeling
Kwantumchemie en Fysicochemie, Departement Chemie, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Heverlee-Leuven, Belgium
| | - Van Tan Tran
- Theoretical
and Physical Chemistry Division, Dong Thap University, 783-Pham
Huu Lau, Cao Lanh City, Dong
Thap Vietnam
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19
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Freund HJ, Shaikhutdinov S, Nilius N. Model Studies on Heterogeneous Catalysts at the Atomic Scale. Top Catal 2014. [DOI: 10.1007/s11244-014-0276-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Matrosova OV, Vishnetskaya MV. Oxidation of sulfites on vanadium-molybdenum oxides. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2013. [DOI: 10.1134/s003602441401018x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Kuhlenbeck H, Shaikhutdinov S, Freund HJ. Well-Ordered Transition Metal Oxide Layers in Model Catalysis – A Series of Case Studies. Chem Rev 2013; 113:3986-4034. [DOI: 10.1021/cr300312n] [Citation(s) in RCA: 170] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Helmut Kuhlenbeck
- Fritz Haber Institute der Max Planck Gesellschaft, Faradayweg 4-6,
14195 Berlin, Germany
| | - Shamil Shaikhutdinov
- Fritz Haber Institute der Max Planck Gesellschaft, Faradayweg 4-6,
14195 Berlin, Germany
| | - Hans-Joachim Freund
- Fritz Haber Institute der Max Planck Gesellschaft, Faradayweg 4-6,
14195 Berlin, Germany
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22
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Park HW, Na BK, Cho BW, Park SM, Roh KC. Influence of vanadium doping on the electrochemical performance of nickel oxide in supercapacitors. Phys Chem Chem Phys 2013; 15:17626-35. [DOI: 10.1039/c3cp52498a] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Tang Z, Wang S, Zhang L, Ding D, Chen M, Wan H. Effects of O2 pressure on the oxidation of VOx/Pt(111). Phys Chem Chem Phys 2013; 15:12124-31. [DOI: 10.1039/c3cp50712b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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24
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Muthukumar K, Yu J, Xu Y, Guliants VV. Propane Ammoxidation Over the Mo–V–Te–Nb–O M1 Phase: Reactivity of Surface Cations in Hydrogen Abstraction Steps. Top Catal 2011. [DOI: 10.1007/s11244-011-9682-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Affiliation(s)
- Jinlong Gong
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
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26
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Liu ZW, Wang C, Fan WB, Liu ZT, Hao QQ, Long X, Lu J, Wang JG, Qin ZF, Su DS. V2O5/Ce0.6Zr0.4O2-Al2O3 as an efficient catalyst for the oxidative dehydrogenation of ethylbenzene with carbon dioxide. CHEMSUSCHEM 2011; 4:341-345. [PMID: 21394922 DOI: 10.1002/cssc.201000351] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2010] [Indexed: 05/30/2023]
Affiliation(s)
- Zhong-Wen Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, MOE, School of Chemistry & Materials Science, Shaanxi Normal University, Xi'an 710062, PR China.
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27
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Nilius N, Risse T, Schauermann S, Shaikhutdinov S, Sterrer M, Freund HJ. Model Studies in Catalysis. Top Catal 2011. [DOI: 10.1007/s11244-011-9626-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Matrosova OV, Rufov YN, Vishnetskaya MV. Low-temperature emission of singlet oxygen from the surface of transition metal oxides. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2010. [DOI: 10.1134/s0036024410120319] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Molinari JE, Wachs IE. Presence of Surface Vanadium Peroxo-oxo Umbrella Structures in Supported Vanadium Oxide Catalysts: Fact or Fiction? J Am Chem Soc 2010; 132:12559-61. [DOI: 10.1021/ja105392g] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Julie E. Molinari
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical Engineering, Lehigh University, Bethlehem, Pennsylvania 18015
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical Engineering, Lehigh University, Bethlehem, Pennsylvania 18015
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30
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Baron M, Abbott H, Bondarchuk O, Stacchiola D, Uhl A, Shaikhutdinov S, Freund HJ, Popa C, Ganduglia-Pirovano M, Sauer J. Resolving the Atomic Structure of Vanadia Monolayer Catalysts: Monomers, Trimers, and Oligomers on Ceria. Angew Chem Int Ed Engl 2009; 48:8006-9. [DOI: 10.1002/anie.200903085] [Citation(s) in RCA: 126] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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32
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Baron M, Abbott H, Bondarchuk O, Stacchiola D, Uhl A, Shaikhutdinov S, Freund HJ, Popa C, Ganduglia-Pirovano M, Sauer J. Resolving the Atomic Structure of Vanadia Monolayer Catalysts: Monomers, Trimers, and Oligomers on Ceria. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200903085] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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33
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Fortrie R, Todorova TK, Ganduglia-Pirovano MV, Sauer J. Nonuniform temperature dependence of the reactivity of disordered VOx/κ-Al2O3(001) surfaces: A density functional theory based Monte Carlo study. J Chem Phys 2008; 129:224710. [DOI: 10.1063/1.3021290] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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34
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Djerdj I, Sheptyakov D, Gozzo F, Arčon D, Nesper R, Niederberger M. Oxygen Self-Doping in Hollandite-Type Vanadium Oxyhydroxide Nanorods. J Am Chem Soc 2008; 130:11364-75. [DOI: 10.1021/ja801813a] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Igor Djerdj
- Department of Materials and Department of Chemistry and Applied Biosciences, ETH Zürich, Wolfgang-Pauli-Strasse 10, 8093 Zürich, Switzerland, Laboratory for Neutron Scattering, ETH Zürich and Paul Scherrer Institute, 5232 Villigen, Switzerland, Swiss Light Source, Paul Scherrer Institute, 5232 Villigen, Switzerland, Institute Jožef Stefan, Jamova 39, 1000 Ljubljana, Slovenia, Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia, and Collegium Helveticum,
| | - Denis Sheptyakov
- Department of Materials and Department of Chemistry and Applied Biosciences, ETH Zürich, Wolfgang-Pauli-Strasse 10, 8093 Zürich, Switzerland, Laboratory for Neutron Scattering, ETH Zürich and Paul Scherrer Institute, 5232 Villigen, Switzerland, Swiss Light Source, Paul Scherrer Institute, 5232 Villigen, Switzerland, Institute Jožef Stefan, Jamova 39, 1000 Ljubljana, Slovenia, Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia, and Collegium Helveticum,
| | - Fabia Gozzo
- Department of Materials and Department of Chemistry and Applied Biosciences, ETH Zürich, Wolfgang-Pauli-Strasse 10, 8093 Zürich, Switzerland, Laboratory for Neutron Scattering, ETH Zürich and Paul Scherrer Institute, 5232 Villigen, Switzerland, Swiss Light Source, Paul Scherrer Institute, 5232 Villigen, Switzerland, Institute Jožef Stefan, Jamova 39, 1000 Ljubljana, Slovenia, Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia, and Collegium Helveticum,
| | - Denis Arčon
- Department of Materials and Department of Chemistry and Applied Biosciences, ETH Zürich, Wolfgang-Pauli-Strasse 10, 8093 Zürich, Switzerland, Laboratory for Neutron Scattering, ETH Zürich and Paul Scherrer Institute, 5232 Villigen, Switzerland, Swiss Light Source, Paul Scherrer Institute, 5232 Villigen, Switzerland, Institute Jožef Stefan, Jamova 39, 1000 Ljubljana, Slovenia, Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia, and Collegium Helveticum,
| | - Reinhard Nesper
- Department of Materials and Department of Chemistry and Applied Biosciences, ETH Zürich, Wolfgang-Pauli-Strasse 10, 8093 Zürich, Switzerland, Laboratory for Neutron Scattering, ETH Zürich and Paul Scherrer Institute, 5232 Villigen, Switzerland, Swiss Light Source, Paul Scherrer Institute, 5232 Villigen, Switzerland, Institute Jožef Stefan, Jamova 39, 1000 Ljubljana, Slovenia, Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia, and Collegium Helveticum,
| | - Markus Niederberger
- Department of Materials and Department of Chemistry and Applied Biosciences, ETH Zürich, Wolfgang-Pauli-Strasse 10, 8093 Zürich, Switzerland, Laboratory for Neutron Scattering, ETH Zürich and Paul Scherrer Institute, 5232 Villigen, Switzerland, Swiss Light Source, Paul Scherrer Institute, 5232 Villigen, Switzerland, Institute Jožef Stefan, Jamova 39, 1000 Ljubljana, Slovenia, Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia, and Collegium Helveticum,
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36
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Metiu H. Preface to Special Topic: A Survey of Some New Developments in Heterogeneous Catalysis. J Chem Phys 2008; 128:182501. [DOI: 10.1063/1.2894545] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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Herwig C, Limberg C. V4O10: Spectroscopic Fingerprint of a Well-Defined, Molecular Metaloxo Aggregate. Inorg Chem 2008; 47:2937-9. [DOI: 10.1021/ic8002146] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christian Herwig
- Institut fuer Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, 12489 Berlin, Germany
| | - Christian Limberg
- Institut fuer Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, 12489 Berlin, Germany
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39
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Santambrogio G, Brümmer M, Wöste L, Döbler J, Sierka M, Sauer J, Meijer G, Asmis KR. Gas phase vibrational spectroscopy of mass-selected vanadium oxide anions. Phys Chem Chem Phys 2008; 10:3992-4005. [DOI: 10.1039/b803492c] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Freund HJ, Pacchioni G. Oxide ultra-thin films on metals: new materials for the design of supported metal catalysts. Chem Soc Rev 2008; 37:2224-42. [DOI: 10.1039/b718768h] [Citation(s) in RCA: 467] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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41
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Bandara A, Abu-Haija M, Höbel F, Kuhlenbeck H, Rupprechter G, Freund HJ. Molecular adsorption on V2O3(0001)/Au(111) surfaces. Top Catal 2007. [DOI: 10.1007/s11244-007-0332-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Waters T, Khairallah GN, Wimala SASY, Ang YC, O'Hair RAJ, Wedd AG. Mononuclear metavanadate catalyses gas phase oxidation of methanol to formaldehyde employing dioxygen as the terminal oxidant. Chem Commun (Camb) 2006:4503-5. [PMID: 17283799 DOI: 10.1039/b612384h] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multistage mass spectrometry experiments reveal a sequence of gas phase reactions for the oxidation of methanol to formaldehyde with a mononuclear oxo vanadate anion as the catalyst and dioxygen as the terminal oxidant.
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Affiliation(s)
- Tom Waters
- School of Chemistry, The University of Melbourne, Victoria, 3010, Australia
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