1
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Liang Y, Zhang Z, Su X, Feng X, Xing S, Liu W, Huang R, Liu Y. Coordination Defect-Induced Frustrated Lewis Pairs in Polyoxo-metalate-Based Metal-Organic Frameworks for Efficient Catalytic Hydrogenation. Angew Chem Int Ed Engl 2023; 62:e202309030. [PMID: 37488072 DOI: 10.1002/anie.202309030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/24/2023] [Accepted: 07/24/2023] [Indexed: 07/26/2023]
Abstract
Precise control of the structure and spatial distance of Lewis acid (LA) and Lewis base (LB) sites in a porous system to construct efficient solid frustrated Lewis pair (FLP) catalyst is vital for industrial application but remains challenging. Herein, we constructed FLP sites in a polyoxometalate (POM)-based metal-organic framework (MOF) by introducing coordination-defect metal nodes (LA) and surface-basic POM with abundant oxygen (LB). The well-defined and unique spatial conformation of the defective POM-based MOF ensure that the distance between LA and LB is at ~4.3 Å, a suitable distance to activate H2 . This FLP catalyst can heterolytically dissociate H2 into active Hδ- , thus exhibiting high activity in hydrogenation, which is 55 and 2.7 times as high as that of defect-free POM-based MOF and defective MOF without POM, respectively. This work provides a new avenue toward precise design multi-site catalyst to achieve specific activation of target substrate for synergistic catalysis.
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Affiliation(s)
- Yan Liang
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Zhong Zhang
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Xiaofang Su
- School of Chemistry and Chemical Engineering, Henan Normal University, Henan, 453007, China
| | - Xiao Feng
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Songzhu Xing
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Wei Liu
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Rui Huang
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Yiwei Liu
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
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2
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Zhu G, Han M, Xiao B, Gan Z. On the Microcrystal Structure of Sputtered Cu Films Deposited on Si(100) Surfaces: Experiment and Integrated Multiscale Simulation. Molecules 2023; 28:4786. [PMID: 37375341 DOI: 10.3390/molecules28124786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/02/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
Sputtered Cu/Si thin films were experimentally prepared at different sputtering pressures and characterized using X-ray diffraction (XRD) and an atomic force microscope (AFM). Simultaneously, an application-oriented simulation approach for magnetron sputtering deposition was proposed in this work. In this integrated multiscale simulation, the sputtered atom transport was modeled using the Monte Carlo (MC) and molecular dynamics (MD) coupling method, and the deposition of sputtered atoms was simulated using the MD method. This application-oriented simulation approach was used to simulate the growth of Cu/Si(100) thin films at different sputtering pressures. The experimental results unveiled that, as the sputtering pressure decreased from 2 to 0.15 Pa, the surface roughness of Cu thin films gradually decreased; (111)-oriented grains were dominant in Cu thin films and the crystal quality of the Cu thin film was gradually improved. The simulation results were consistent with the experimental characterization results. The simulation results revealed that the transformation of the film growth mode from the Volmer-Weber growth mode to the two-dimensional layered growth mode resulted in a decrease in the surface roughness of Cu thin films; the increase in the amorphous compound CuSix and the hcp copper silicide with the decrease in the sputtering pressure was responsible for the improvement of the crystal quality of the Cu thin film. This work proposed a more realistic, integrated simulation scheme for magnetron sputtering deposition, providing theoretical guidance for the efficient preparation of high-quality sputtered films.
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Affiliation(s)
- Guo Zhu
- School of Mechanical & Electrical Engineering, Hunan City University, Yiyang 413000, China
| | - Mengxin Han
- School of Mechanical & Electrical Engineering, Hunan City University, Yiyang 413000, China
| | - Baijun Xiao
- School of Mechanical & Electrical Engineering, Hunan City University, Yiyang 413000, China
| | - Zhiyin Gan
- School of Mechanical Science & Engineering, Huazhong University of Science & Technology, Wuhan 430074, China
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3
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Yu X, Cheng Y, Li Y, Polo-Garzon F, Liu J, Mamontov E, Li M, Lennon D, Parker SF, Ramirez-Cuesta AJ, Wu Z. Neutron Scattering Studies of Heterogeneous Catalysis. Chem Rev 2023. [PMID: 37315192 DOI: 10.1021/acs.chemrev.3c00101] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Understanding the structural dynamics/evolution of catalysts and the related surface chemistry is essential for establishing structure-catalysis relationships, where spectroscopic and scattering tools play a crucial role. Among many such tools, neutron scattering, though less-known, has a unique power for investigating catalytic phenomena. Since neutrons interact with the nuclei of matter, the neutron-nucleon interaction provides unique information on light elements (mainly hydrogen), neighboring elements, and isotopes, which are complementary to X-ray and photon-based techniques. Neutron vibrational spectroscopy has been the most utilized neutron scattering approach for heterogeneous catalysis research by providing chemical information on surface/bulk species (mostly H-containing) and reaction chemistry. Neutron diffraction and quasielastic neutron scattering can also supply important information on catalyst structures and dynamics of surface species. Other neutron approaches, such as small angle neutron scattering and neutron imaging, have been much less used but still give distinctive catalytic information. This review provides a comprehensive overview of recent advances in neutron scattering investigations of heterogeneous catalysis, focusing on surface adsorbates, reaction mechanisms, and catalyst structural changes revealed by neutron spectroscopy, diffraction, quasielastic neutron scattering, and other neutron techniques. Perspectives are also provided on the challenges and future opportunities in neutron scattering studies of heterogeneous catalysis.
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Affiliation(s)
- Xinbin Yu
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37381, United States
| | - Yongqiang Cheng
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Yuanyuan Li
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37381, United States
| | - Felipe Polo-Garzon
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37381, United States
| | - Jue Liu
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Eugene Mamontov
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Meijun Li
- Manufacturing Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - David Lennon
- School of Chemistry, Joseph Black Building, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - Stewart F Parker
- ISIS Pulsed Neutron and Muon Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, United Kingdom
| | - Anibal J Ramirez-Cuesta
- Neutron Technologies Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Zili Wu
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37381, United States
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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4
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Ma HZ, Canty AJ, O'Hair RAJ. Near thermal, selective liberation of hydrogen from formic acid catalysed by copper hydride ate complexes. Dalton Trans 2023; 52:1574-1581. [PMID: 36656079 DOI: 10.1039/d2dt03764e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A near thermal two-step catalytic cycle for the selective release of hydrogen from formic acid by mononuclear cuprate anions was revealed using multistage mass spectrometry experiments, deuterium labelling and DFT calculations. In gas-phase ion-molecule reactions, mononuclear copper hydride anions [(L)Cu(H)]- (where L = H-, O2CH-, BH4- and CN-) were found to react with formic acid (HCO2H) to yield [(L)Cu(O2CH)]- and H2. The copper formate anions [(L)Cu(O2CH)]- can decarboxylate via collision-induced dissociation (CID) to reform the copper hydride [(L)Cu(H)]-, thereby closing the two-step catalytic cycle. Analogous labelling experiments with d1-formic acid (DCO2H) reveal that the decarboxylation process also occurs spontaneously. A kinetic study was carried out to provide further insights into the species involved in this reaction. Energetics from density functional theory (DFT) calculations show that the key decarboxylation step can occur without CID, thus in support of experimental observations.
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Affiliation(s)
- Howard Z Ma
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, 30 Flemington Rd, Parkville, Victoria 3010, Australia.
| | - Allan J Canty
- School of Natural Sciences - Chemistry, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia
| | - Richard A J O'Hair
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, 30 Flemington Rd, Parkville, Victoria 3010, Australia.
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5
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Strange NA, Adak S, Stroupe Z, Crain CA, Novak EC, Daemen LL, Larese JZ. A multi-faceted structural, thermodynamic, and spectroscopic approach for investigating ethanol dehydration over transition phase aluminas. Phys Chem Chem Phys 2023; 25:590-603. [DOI: 10.1039/d2cp04016f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The surface-catalyzed dehydration of ethanol over transition phase aluminas was studied using a multi-faceted structural and thermodynamic characterization approach, which enabled a detailed examination of the reaction mechanism using INS.
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Affiliation(s)
| | - Sourav Adak
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996, USA
- Lovely Professional University, Phagwara, Punjab 144001, India
| | - Zachary Stroupe
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996, USA
| | | | - Eric C. Novak
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Luke L. Daemen
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - J. Z. Larese
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996, USA
- Joint Institute for Advanced Materials, Knoxville, TN 37920, USA
- Shull-Wollan Center, a Joint Institute for Neutron Sciences, Oak Ridge, TN 37831, USA
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6
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Tackett BM, Raciti D, Hight Walker AR, Moffat TP. Surface Hydride Formation on Cu(111) and Its Decomposition to Form H 2 in Acid Electrolytes. J Phys Chem Lett 2021; 12:10936-10941. [PMID: 34734717 DOI: 10.1021/acs.jpclett.1c03131] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Mass spectrometry and Raman vibrational spectroscopy were used to follow competitive dynamics between adsorption and desorption of H and anions during potential cycling of three low-index Cu surfaces in acid electrolytes. Unique to Cu(111) is a redox wave for surface hydride formation coincident with anion desorption, while the reverse reaction of hydride decomposition with anion adsorption yields H2 by recombination rather than oxidation to H3O+. Charge imbalance between the reactions accounts for the asymmetric voltammetry in SO42-, ClO4-, PO43-, and Cl- electrolytes with pH 0.68-4.5. Two-dimensional hydride formation is evidenced by the reduction wave prior to H2 evolution and vibrational bands between 995 and 1130 cm-1. In contrast to Cu(111), no distinct voltammetric signature of surface hydride formation is observed on Cu(110) and Cu(100). The Cu(111) hydride surface phase may serve to catalyze hydrofunctionalization reactions such as CO2 reduction to CH4 and should be broadly useful in electro-organic synthesis.
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Affiliation(s)
- Brian M Tackett
- Materials Science and Engineering Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States
| | - David Raciti
- Materials Science and Engineering Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States
| | - Angela R Hight Walker
- Nanoscale Device Characterization Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States
| | - Thomas P Moffat
- Materials Science and Engineering Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States
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7
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Li J, Kornienko N. Probing electrosynthetic reactions with furfural on copper surfaces. Chem Commun (Camb) 2021; 57:5127-5130. [PMID: 33899065 DOI: 10.1039/d1cc01429c] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
This work entails the integrated use of electrochemistry and operando Raman spectroscopy to probe the reduction of a biomass platform, furfural, to value-added chemicals on Cu electrodes. The results reveal key structural differences of the Cu that dictate selectivity for furfuryl alcohol or 2-methylfuran.
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Affiliation(s)
- Junnan Li
- Department of Chemistry, Université de Montréal, 1375 Ave. Thérèse-Lavoie-Roux, Montréal, QC H2V 0B3, Canada.
| | - Nikolay Kornienko
- Department of Chemistry, Université de Montréal, 1375 Ave. Thérèse-Lavoie-Roux, Montréal, QC H2V 0B3, Canada.
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8
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Dhakshinamoorthy A, García CV, Concepcion P, Garcia H. Arene borylation through C H activation using Cu3(BTC)2 as heterogeneous catalyst. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.06.034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Grishin MV, Gatin AK, Sarvadii SY, Slutskii VG, Shub BR, Kulak AI, Rostovshchikova TN, Gurevich SA, Kozhevin VM, Yavsin DA. Morphology and Adsorption Properties of Bimetallic Nanostructured Coatings on Pyrolytic Graphite. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2020. [DOI: 10.1134/s1990793120040065] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Theoretical Insights into the Structure of the Aminotris(Methylenephosphonic Acid) (ATMP) Anion: A Possible Partner for Conducting Ionic Media. Symmetry (Basel) 2020. [DOI: 10.3390/sym12060920] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
We present a computational characterisation of Aminotris(methylenephosphonic acid) (ATMP) and its potential use as an anionic partner for conductive ionic liquids (ILs). We argue that for an IL to be a good candidate for a conducting medium, two conditions must be fulfilled: (i) the charge must be transported by light carriers; and (ii) the system must maintain a high degree of ionisation. The result trends presented herein show that there are molecular ion combinations that do comply with these two criteria, regardless of the specific system used. ATMP is a symmetric molecule with a total of six protons. In the bulk phase, breaking the symmetry of the fully protonated state and creating singly and doubly charged anions induces proton transfer mechanisms. To demonstrate this, we used molecular dynamics (MD) simulations employing a variable topology approach based on the reasonably reliable semiempirical density functional tight binding (DFTB) evaluation of the atomic forces. We show that, by choosing common and economical starting compounds, we can devise a viable prototype for a highly conductive medium where charge transfer is achieved by proton motion.
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11
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Cu2O nanocubes with mixed oxidation-state facets for (photo)catalytic hydrogenation of carbon dioxide. Nat Catal 2019. [DOI: 10.1038/s41929-019-0338-z] [Citation(s) in RCA: 128] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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12
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Composition-Nanostructure Steered Performance Predictions in Steel Wires. NANOMATERIALS 2019; 9:nano9081119. [PMID: 31382607 PMCID: PMC6723625 DOI: 10.3390/nano9081119] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 07/30/2019] [Accepted: 07/30/2019] [Indexed: 12/30/2022]
Abstract
Neutron scattering in combination with scanning electron and atomic force microscopy were employed to quantitatively resolve elemental composition, nano- through meso- to metallurgical structures and surface characteristics of two commercial stainless steel orthodontic archwires—G&H and Azdent. The obtained bulk composition confirmed that both samples are made of metastable austenitic stainless steel type AISI 304. The neutron technique’s higher detection sensitivity to alloying elements facilitated the quantitative determination of the composition factor (CF), and the pitting resistance equivalent number (PREN) for predicting austenite stability and pitting-corrosion resistance, respectively. Simultaneous neutron diffraction analyses revealed that both samples contained additional martensite phase due to strain-induced martensite transformation. The unexpectedly high martensite content (46.20 vol%) in G&H was caused by combination of lower austenite stability (CF = 17.37, p = .03), excessive cold working and inadequate thermal treatment during material processing. Together, those results assist in revealing alloying recipes and processing history, and relating these with corrosion resistance and mechanical properties. The present methodology has allowed access to unprecedented length-scale (μm to sub-nm) resolution, accessing nano- through meso-scopic properties. It is envisaged that such an approach can be extended to the study and design of other metallic (bio)materials used in medical sciences, dentistry and beyond.
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13
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Parker SF, Ramirez-Cuesta AJ, Daemen L. Vibrational spectroscopy with neutrons: Recent developments. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 190:518-523. [PMID: 28972940 DOI: 10.1016/j.saa.2017.09.057] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 09/12/2017] [Accepted: 09/19/2017] [Indexed: 06/07/2023]
Abstract
In this short review, we will briefly summarise the differences between INS spectroscopy and conventional infrared and Raman spectroscopies. We will illustrate these with the current state-of-the art, using C70 as an example. The main focus of the article will be on the key advances in INS spectroscopy over the last ten years or so, that are driving new areas of research. The developments fall into three broad categories: (i) new sources, (ii) new and/or upgraded instrumentation and (iii) novel uses for existing instruments. For (i) we summarise the new neutron sources that are now, or will be, operating. For (ii) we show the capabilities of new or upgraded instruments. These offer unprecedented levels of sensitivity: sub-millimole quantities of hydrogen can be measured and millimole quantities of low cross section materials. Recent work on hexahalo metallates and adsorbed CO2 is used to demonstrate what is now feasible. For (iii), instruments that were designed for studies of magnetism, are now being used for molecular spectroscopy, especially for catalysts. This is illustrated with work on CuH and methanol synthesis catalysts.
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Affiliation(s)
- Stewart F Parker
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, UK.
| | - Anibal J Ramirez-Cuesta
- Chemical & Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Luke Daemen
- Chemical & Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
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14
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Li Y, Korzhavyi PA. Physical and chemical properties of Cu(i) compounds with O and/or H. Dalton Trans 2017; 46:529-538. [PMID: 27966719 DOI: 10.1039/c6dt04376c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electronic structure and chemical bonding of Cu(i) compounds with O and/or H are investigated using ab initio calculations based on density functional theory. A hybrid functional PBE0 is employed, which accurately reproduces an experimental band gap of cuprite Cu2O. Cuprous hydroxide CuOH (cuprice) is found to be an indirect band gap semiconductor. Depending on the bond network configuration of CuOH, its band gap is found to vary between 2.73 eV and 3.03 eV. The presence of hydrogen in CuOH has little effect on the character of Cu-O bonds, as compared to Cu2O, but lowers the energy levels of the occupied states upon O-H bond formation. The bonding charge density and electron localization function calculations reveal that a closed-shell Cu-Cu interaction takes place in Cu2O and CuOH between the neighbouring Cu cations belonging to different bond networks. Besides, three structures of cuprous hydride CuH are investigated. We find that the halite structure of CuH can be stabilized at high pressure (above 32 GPa) while wurtzite is the most stable structure of CuH at ambient pressure. The H-H interaction contributes to the dynamical stabilization of the halite structure. The wurtzite and sphalerite structures of CuH are predicted to be semiconducting with small band gaps, while the halite structure is calculated to be metallic.
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Affiliation(s)
- Yunguo Li
- Division of Materials Technology, Department of Materials Science and Engineering, Royal Institute of Technology (KTH), S-100 44 Stockholm, Sweden.
| | - Pavel A Korzhavyi
- Division of Materials Technology, Department of Materials Science and Engineering, Royal Institute of Technology (KTH), S-100 44 Stockholm, Sweden.
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15
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Lousada CM, Fernandes RMF, Tarakina NV, Soroka IL. Synthesis of copper hydride (CuH) from CuCO3·Cu(OH)2 – a path to electrically conductive thin films of Cu. Dalton Trans 2017; 46:6533-6543. [DOI: 10.1039/c7dt00511c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High purity CuH nano-sized particles have been synthesized in aqueous media and then converted to electrically conductive thin films.
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Affiliation(s)
- Cláudio M. Lousada
- Division of Materials Technology
- Department of Materials Science and Engineering
- KTH Royal Institute of Technology
- SE-100 44 Stockholm
- Sweden
| | - Ricardo M. F. Fernandes
- School of Chemical Science and Engineering
- Applied Physical Chemistry
- KTH Royal Institute of Technology
- SE-100 44 Stockholm
- Sweden
| | - Nadezda V. Tarakina
- The NanoVision Centre
- School of Engineering and Materials Science
- Queen Mary University of London
- London E1 4NS
- UK
| | - Inna L. Soroka
- School of Chemical Science and Engineering
- Applied Physical Chemistry
- KTH Royal Institute of Technology
- SE-100 44 Stockholm
- Sweden
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16
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Dhakshinamoorthy A, Asiri AM, Concepcion P, Garcia H. Synthesis of borasiloxanes by oxidative hydrolysis of silanes and pinacolborane using Cu3(BTC)2 as a solid catalyst. Chem Commun (Camb) 2017; 53:9998-10001. [DOI: 10.1039/c7cc05221a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work reports the synthesis of borasiloxanes from silanes and pinacolboranes using Cu3(BTC)2 as a heterogeneous catalyst in acetonitrile under mild conditions.
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Affiliation(s)
| | - Abdullah M. Asiri
- Centre of Excellence for Advanced Materials Research
- King Abdulaziz University
- Jeddah
- Saudi Arabia
| | - Patricia Concepcion
- Instituto Universitario de Tecnología Química CSIV-UPV
- Universitat Politècnica de València
- Valencia
- Spain
| | - Hermenegildo Garcia
- Centre of Excellence for Advanced Materials Research
- King Abdulaziz University
- Jeddah
- Saudi Arabia
- Instituto Universitario de Tecnología Química CSIV-UPV
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17
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Bennett EL, Wilson T, Murphy PJ, Refson K, Hannon AC, Imberti S, Callear SK, Chass GA, Parker SF. Structure and spectroscopy of CuH prepared via borohydride reduction. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2015; 71:608-612. [PMID: 26634717 PMCID: PMC4669994 DOI: 10.1107/s2052520615015176] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Accepted: 08/14/2015] [Indexed: 06/05/2023]
Abstract
Copper(I) hydride (cuprous hydride, CuH) was the first binary metal hydride to be discovered (in 1844) and is singular in that it is synthesized in solution, at ambient temperature. There are several synthetic paths to CuH, one of which involves reduction of an aqueous solution of CuSO4·5H2O by borohydride ions. The product from this procedure has not been extensively characterized. Using a combination of diffraction methods (X-ray and neutron) and inelastic neutron scattering spectroscopy, we show that the CuH from the borohydride route has the same bulk structure as CuH produced by other routes. Our work shows that the product consists of a core of CuH with a shell of water and that this may be largely replaced by ethanol. This offers the possibility of modifying the properties of CuH produced by aqueous routes.
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Affiliation(s)
- Elliot L. Bennett
- School of Chemistry, Bangor University, Bangor, Gwynedd LL57 2UW, Wales
| | - Thomas Wilson
- School of Chemistry, Bangor University, Bangor, Gwynedd LL57 2UW, Wales
| | - Patrick J. Murphy
- School of Chemistry, Bangor University, Bangor, Gwynedd LL57 2UW, Wales
| | - Keith Refson
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, England
- Department of Physics, Royal Holloway, University of London, Egham TW20 0EX, England
| | - Alex C. Hannon
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, England
| | - Silvia Imberti
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, England
| | - Samantha K. Callear
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, England
| | - Gregory A. Chass
- School of Biological and Chemical Sciences, Queen Mary University of London, London E1 4NS, England
| | - Stewart F. Parker
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, England
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18
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Li Y, Lousada CM, Soroka IL, Korzhavyi PA. Bond Network Topology and Antiferroelectric Order in Cuprice CuOH. Inorg Chem 2015; 54:8969-77. [DOI: 10.1021/acs.inorgchem.5b01030] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yunguo Li
- Department of Materials Science and Engineering and ‡Applied
Physical Chemistry, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), S-100 44 Stockholm, Sweden
| | - Cláudio M. Lousada
- Department of Materials Science and Engineering and ‡Applied
Physical Chemistry, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), S-100 44 Stockholm, Sweden
| | - Inna L. Soroka
- Department of Materials Science and Engineering and ‡Applied
Physical Chemistry, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), S-100 44 Stockholm, Sweden
| | - Pavel A. Korzhavyi
- Department of Materials Science and Engineering and ‡Applied
Physical Chemistry, School of Chemical Science and Engineering, Royal Institute of Technology (KTH), S-100 44 Stockholm, Sweden
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