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Han Y, Ou Y, Sun H, Kopaczek J, Leonel GJ, Guo X, Brugman BL, Leinenweber K, Xu H, Wang M, Tongay S, Navrotsky A. Thermodynamic properties and enhancement of diamagnetism in nitrogen doped lutetium hydride synthesized at high pressure. Proc Natl Acad Sci U S A 2024; 121:e2321540121. [PMID: 38483993 PMCID: PMC10962990 DOI: 10.1073/pnas.2321540121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 02/12/2024] [Indexed: 03/27/2024] Open
Abstract
Nitrogen doped lutetium hydride has drawn global attention in the pursuit of room-temperature superconductivity near ambient pressure and temperature. However, variable synthesis techniques and uncertainty surrounding nitrogen concentration have contributed to extensive debate within the scientific community about this material and its properties. We used a solid-state approach to synthesize nitrogen doped lutetium hydride at high pressure and temperature (HPT) and analyzed the residual starting materials to determine its nitrogen content. High temperature oxide melt solution calorimetry determined the formation enthalpy of LuH1.96N0.02 (LHN) from LuH2 and LuN to be -28.4 ± 11.4 kJ/mol. Magnetic measurements indicated diamagnetism which increased with nitrogen content. Ambient pressure conductivity measurements observed metallic behavior from 5 to 350 K, and the constant and parabolic magnetoresistance changed with increasing temperature. High pressure conductivity measurements revealed that LHN does not exhibit superconductivity up to 26.6 GPa. We compressed LHN in a diamond anvil cell to 13.7 GPa and measured the Raman signal at each step, with no evidence of any phase transition. Despite the absence of superconductivity, a color change from blue to purple to red was observed with increasing pressure. Thus, our findings confirm the thermodynamic stability of LHN, do not support superconductivity, and provide insights into the origins of its diamagnetism.
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Affiliation(s)
- Yifeng Han
- Center for Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, AZ85287
| | - Yunbo Ou
- School for Engineering of Matter Transport and Energy, Arizona State University, Tempe, AZ85287
| | - Hualei Sun
- School of Science, Sun Yat-Sen University, Shenzhen518107, R.P. China
| | - Jan Kopaczek
- School for Engineering of Matter Transport and Energy, Arizona State University, Tempe, AZ85287
- Department of Semiconductor Materials Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wrocław50-370, Poland
| | - Gerson J. Leonel
- Center for Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, AZ85287
| | - Xin Guo
- Eyring Materials Center, Arizona State University, Tempe, AZ85287
| | - Benjamin L. Brugman
- Center for Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, AZ85287
| | - Kurt Leinenweber
- Center for Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, AZ85287
| | - Hongwu Xu
- Center for Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, AZ85287
| | - Meng Wang
- Center for Neutron Science and Technology, Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices, School of Physics, Sun Yat-Sen University, Guangzhou510275, R.P. China
| | - Sefaattin Tongay
- School for Engineering of Matter Transport and Energy, Arizona State University, Tempe, AZ85287
| | - Alexandra Navrotsky
- Center for Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, AZ85287
- School for Engineering of Matter Transport and Energy, Arizona State University, Tempe, AZ85287
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2
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Jayanthi K, Lamichhane TN, Roy V, Zhao F, Navrotsky A, Moyer BA, Paranthaman MP. Integrated Circular Economy Model System for Direct Lithium Extraction: From Minerals to Batteries Utilizing Aluminum Hydroxide. ACS Appl Mater Interfaces 2023; 15:58984-58993. [PMID: 38051915 DOI: 10.1021/acsami.3c12070] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Aluminum hydroxide, an abundant mineral found in nature, exists in four polymorphs: gibbsite, bayerite, nordstrandite, and doyleite. Among these polymorphs gibbsite, bayerite, and commercially synthesized amorphous aluminum hydroxide have been investigated as sorbent materials for lithium extraction from sulfate solutions. The amorphous form of Al(OH)3 exhibits a reactivity higher than that of the naturally occurring crystalline polymorphs in terms of extracting Li+ ions. This study employed high-temperature oxide melt solution calorimetry to explore the energetics of the sorbent polymorphs. The enthalpic stability order was measured to be gibbsite > bayerite > amorphous Al(OH)3. The least stable form, amorphous Al(OH)3, undergoes a spontaneous reaction with lithium, resulting in the formation of a stable layered double hydroxide phase. Consequently, amorphous Al(OH)3 shows promise as a sorbent material for selectively extracting lithium from clay mineral leachate solutions. This research demonstrates the selective direct extraction of Li+ ions using amorphous aluminum hydroxide through a liquid-solid lithiation reaction, followed by acid-free delithiation and relithiation processes, achieving an extraction efficiency of 86%, and the maximum capacity was 37.86 mg·g-1 in a single step during lithiation. With high selectivity during lithiation and nearly complete recoverability of the sorbent material during delithiation, this method presents a circular economy model. Furthermore, a life cycle analysis was conducted to illustrate the environmental advantages of replacing the conventional soda ash-based precipitation process with this method, along with a simple operational cost analysis to evaluate reagent and fuel expenses.
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Affiliation(s)
- K Jayanthi
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Tej N Lamichhane
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Venkat Roy
- Environmental and Ecological Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Fu Zhao
- Environmental and Ecological Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Alexandra Navrotsky
- School of Molecular Sciences and Navrotsky Eyring Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
| | - Bruce A Moyer
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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Navrotsky A, Leonel GJ. Thermochemistry of hybrid materials. Philos Trans A Math Phys Eng Sci 2023; 381:20220334. [PMID: 37691468 DOI: 10.1098/rsta.2022.0334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 06/20/2023] [Indexed: 09/12/2023]
Abstract
This paper is based on a lecture Navrotsky gave honouring the memory of Paul McMillan. It summarizes our recent findings in the thermodynamics of hybrid materials including metal organic frameworks (MOFs), polymer-derived ceramics (PDCs) and ionic organic-inorganic compounds. This work describes the main structure types and their corresponding thermodynamic stability, obtained from calorimetric measurements in our laboratory. The effects of linker substituent and framework topology on the thermodynamic stability of isostructural zeolitic imidazolate frameworks and other MOFs are discussed. The paper documents the effects of interdomain interaction and bonding speciation on the thermodynamic stability of various PDC compositions, including SiC, SiOC and SiCN systems. The paper further describes effects of different cations on the thermodynamic stability of selected ionic organic-inorganic compounds. Similarities and differences among these materials are emphasized. This article is part of the theme issue 'Exploring the length scales, timescales and chemistry of challenging materials (Part 2)'.
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Affiliation(s)
- Alexandra Navrotsky
- School of Molecular Sciences, Arizona State University, Tempe, AZ 85287, USA
- Navrotsky Eyring Center for Materials of the Universe, Arizona State University, Tempe, AZ 85287, USA
- School of Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ 85287, USA
| | - Gerson J Leonel
- Navrotsky Eyring Center for Materials of the Universe, Arizona State University, Tempe, AZ 85287, USA
- School of Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ 85287, USA
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Leonel G, Lennox CB, Xu Y, Arhangelskis M, Friščić T, Navrotsky A. Experimental and Theoretical Evaluation of the Thermodynamics of the Carbonation Reaction of ZIF-8 and Its Close-Packed Polymorph with Carbon Dioxide. J Phys Chem C Nanomater Interfaces 2023; 127:19520-19526. [PMID: 37817918 PMCID: PMC10561648 DOI: 10.1021/acs.jpcc.3c04135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 09/11/2023] [Indexed: 10/12/2023]
Abstract
We report the first experimental and theoretical evaluation of the thermodynamic driving force for the reaction of metal-organic framework (MOF) materials with carbon dioxide, leading to a metal-organic carbonate phase. Carbonation upon exposure of MOFs to CO2 is a significant concern for the design and deployment of such materials in carbon storage technologies, and this work shows that the formation of a carbonate material from the popular SOD-topology framework material ZIF-8, as well as its dense-packed dia-topology polymorph, is significantly exothermic. With knowledge of the crystal structure of the starting and final phases in the carbonation reaction, we have also identified periodic density functional theory approaches that most closely reproduce the measured reaction enthalpies. This development now permits the use of advanced theoretical calculations to calculate the driving forces behind the carbonation of zeolitic imidazolate frameworks with reasonable accuracy.
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Affiliation(s)
- Gerson
J. Leonel
- Navrotsky
Eyring Center for Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
- School
of Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Cameron B. Lennox
- School
of Chemistry Haworth Building, University
of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
- Department
of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, QC H2L
0B7, Canada
| | - Yizhi Xu
- Faculty of
Chemistry, University of Warsaw, 1 Pasteura Street, Warsaw 02-093, Poland
| | - Mihails Arhangelskis
- Faculty of
Chemistry, University of Warsaw, 1 Pasteura Street, Warsaw 02-093, Poland
| | - Tomislav Friščić
- School
of Chemistry Haworth Building, University
of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
- Department
of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, QC H2L
0B7, Canada
| | - Alexandra Navrotsky
- School
of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
- Navrotsky
Eyring Center for Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
- School
of Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona 85287, United States
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Leonel G, Lennox CB, Scharrer M, Jayanthi K, Friščic T, Navrotsky A. Experimental Investigation of Thermodynamic Stabilization in Boron Imidazolate Frameworks (BIFs) Synthesized by Mechanochemistry. J Phys Chem C Nanomater Interfaces 2023; 127:17754-17760. [PMID: 37736295 PMCID: PMC10510708 DOI: 10.1021/acs.jpcc.3c04164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/14/2023] [Indexed: 09/23/2023]
Abstract
This study experimentally explores the energetics for the formation of boron-imidazolate frameworks (BIFs), which are synthesized by mechanochemistry. The topologically similar frameworks employ the same tetratopic linker based on tetrakis(imidazolyl)boric acid but differ in the monovalent cation metal nodes. This permits assessment of the stabilizing effect of metal nodes in frameworks with sodalite (SOD) and diamondoid (dia) topologies. The enthalpy of formation from endmembers (metal oxide and linker), which define thermodynamic stability of the structures, has been determined by use of acid solution calorimetry. The results show that heavier metal atoms in the node promote greater energetic stabilization of denser structures. Overall, in BIFs the relation between cation descriptors (ionic radius and electronegativity) and thermodynamic stability depends on framework topology. Thermodynamic stability increases with the metallic character of the cation employed as the metal node, independent of the framework topology. The results suggest unifying aspects for thermodynamic stabilization across MOF systems.
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Affiliation(s)
- Gerson
J. Leonel
- Navrotsky
Eyring Center for Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
- School
of Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Cameron B. Lennox
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
- Department
of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, QC H2L
0B7, Canada
| | - Manuel Scharrer
- School
of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
- Navrotsky
Eyring Center for Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
| | - K Jayanthi
- School
of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Tomislav Friščic
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
- Department
of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, QC H2L
0B7, Canada
| | - Alexandra Navrotsky
- School
of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
- Navrotsky
Eyring Center for Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
- School
of Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona 85287, United States
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Leonel G, Lennox CB, Marrett JM, Friščić T, Navrotsky A. Crystallographic and Compositional Dependence of Thermodynamic Stability of [Co(II), Cu(II), and Zn(II)] in 2-Methylimidazole-Containing Zeolitic Imidazolate Frameworks. Chem Mater 2023; 35:7189-7195. [PMID: 37719037 PMCID: PMC10501375 DOI: 10.1021/acs.chemmater.3c01464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 08/02/2023] [Indexed: 09/19/2023]
Abstract
We report the first systematic study experimentally investigating the effect of changes to the divalent metal node on the thermodynamic stability of three-dimensional (3D) and two-dimensional (2D) zeolitic imidazolate frameworks (ZIFs) based on 2-methylimidazolate linkers. In particular, the comparison of enthalpies of formation for materials based on cobalt, copper, and zinc suggests that the use of nodes with larger ionic radius metals leads to the stabilization of the porous sodalite topology with respect to the corresponding higher-density diamondoid (dia)-topology polymorphs. The stabilizing effect of metals is dependent on the framework topology and dimensionality. With previous works pointing to solvent-mediated transformation of 2D ZIF-L structures to their 3D analogues in the sodalite topology, thermodynamic measurements show that contrary to popular belief, the 2D frameworks are energetically stable, thus shedding light on the energetic landscape of these materials. Additionally, the calorimetric data confirm that a change in the dimensionality (3D → 2D) and the presence of structural water within the framework can stabilize structures by as much as 40 kJ·mol-1, making the formation of zinc-based ZIF-L material under such conditions thermodynamically preferred to the formation of both ZIF-8 and its dense, dia-topology polymorph.
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Affiliation(s)
- Gerson
J. Leonel
- Navrotsky
Eyring Center for Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
- School
of Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Cameron B. Lennox
- School
of Chemistry Haworth Building, University
of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
- Department
of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal QC H2L 0B7, Canada
| | - Joseph M. Marrett
- School
of Chemistry Haworth Building, University
of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
- Department
of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal QC H2L 0B7, Canada
| | - Tomislav Friščić
- School
of Chemistry Haworth Building, University
of Birmingham, Edgbaston, Birmingham B15 2TT, U.K.
- Department
of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal QC H2L 0B7, Canada
| | - Alexandra Navrotsky
- School
of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
- Navrotsky
Eyring Center for Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
- School
of Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona 85287, United States
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Navrotsky A, Koryttseva A. Acid-Base Properties of Oxides Derived from Oxide Melt Solution Calorimetry. Molecules 2023; 28:4623. [PMID: 37375178 DOI: 10.3390/molecules28124623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 05/31/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023] Open
Abstract
The paper analyzes the relationships among acid-base interactions in various oxide systems and their thermodynamics. Extensive data on enthalpies of solution of binary oxides in oxide melts of several compositions, obtained by high-temperature oxide melt solution calorimetry at 700 and 800 °C, are systematized and analyzed. Oxides with low electronegativity, namely the alkali and alkaline earth oxides, which are strong oxide ion donors, show enthalpies of solution that have negative values greater than -100 kJ per mole of oxide ion. Their enthalpies of solution become more negative with decreasing electronegativity in the order Li, Na, K and Mg, Ca, Sr, Ba in both of the commonly used molten oxide calorimetric solvents: sodium molybdate and lead borate. Oxides with high electronegativity, including P2O5, SiO2, GeO2, and other acidic oxides, dissolve more exothermically in the less acidic solvent (lead borate). The remaining oxides, with intermediate electronegativity (amphoteric oxides) have enthalpies of solution of between +50 and -100 kJ/mol, with many close to zero. More limited data for the enthalpies of solution of oxides in multicomponent aluminosilicate melts at higher temperature are also discussed. Overall, the ionic model combined with the Lux-Flood description of acid-base reactions provide a consistent and useful interpretation of the data and their application for understanding the thermodynamic stability of ternary oxide systems in solid and liquid states.
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Affiliation(s)
- Alexandra Navrotsky
- School of Molecular Sciences, Center for Materials of the Universe, Arizona State University, P.O. Box 871604, Tempe, AZ 85287-1604, USA
- School for Engineering of Matter, Transport and Energy, Center for Materials of the Universe, Arizona State University, P.O. Box 871604, Tempe, AZ 85287-1604, USA
- School of Earth and Space Exploration, Center for Materials of the Universe, Arizona State University, P.O. Box 871604, Tempe, AZ 85287-1604, USA
| | - Anastasia Koryttseva
- Department of Chemistry, Lobachevsky State University of Nizhniy Novgorod, Gagarin Avenue 23, 603022 Nizhniy Novgorod, Russia
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Bonatti L, Brugman BL, Subramani T, Leinenweber KD, Navrotsky A. Heat capacity of microgram oxide samples by fast scanning calorimetry. Rev Sci Instrum 2023; 94:2889795. [PMID: 37158701 DOI: 10.1063/5.0131946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 04/22/2023] [Indexed: 05/10/2023]
Abstract
Quantitative scanning calorimetry on microgram-sized samples opens a broad, new range of opportunities for studying the thermodynamic properties of quantity-limited materials, including those produced under extreme conditions or found as rare accessory minerals in nature. We calibrated the Mettler Toledo Flash DSC 2+ calorimeter to obtain quantitative heat capacities in the range 200-350 °C, using samples weighing between 2 and 11.5 μg. Our technique is applied to a new set of oxide materials to which it has never been used before, without the need for melting, glass transitions, or phase transformations. Heat capacity data were obtained for silica in the high pressure stishovite (rutile) structure, dense post-stishovite glass, standard fused quartz, and for TiO2 rutile. These heat capacities agree within 5%-15% with the literature values reported for rutile, stishovite, and fused SiO2 glass. The heat capacity of post-stishovite glass, made by heating stishovite to 1000 °C, is a newly reported value. After accurate calibrations, measured heat capacities were then used to calculate masses for samples in the microgram range, a substantial improvement over measurement in conventional microbalances, which have uncertainties approaching 50%-100% for such small samples. Since the typical uncertainty of heat capacities measured on 10-100 mg samples in conventional differential scanning calorimetry is typically 7% (1%-5% with careful work), flash differential scanning calorimetry, using samples a factor of 1000 smaller, increases the uncertainty of heat capacity measurements by a factor of <3, opening the door for meaningful measurements on ultra-small, high-pressure samples and other quantity-limited materials.
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Affiliation(s)
- L Bonatti
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, USA
| | - B L Brugman
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, USA
| | - T Subramani
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, USA
| | - K D Leinenweber
- Eyring Materials Center, Arizona State University, Tempe, Arizona 85287, USA
| | - A Navrotsky
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, USA
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Mielewczyk-Gryń A, Subramani T, Jaworski D, Lilova K, Skubida W, Navrotsky A, Gazda M. Water uptake and energetics of the formation of barium zirconate based multicomponent oxides. Phys Chem Chem Phys 2023; 25:9208-9215. [PMID: 36919378 DOI: 10.1039/d2cp05265b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
A group of multi-component oxides based on BaZrO3 have been prepared using a solid-state reaction method and examined in terms of their water uptake and thermodynamics of formation. Depending on the type and amount of acceptor substitution, the synthesized compounds exhibit various proton defect concentrations, reaching up to 0.2 mol/mol for a compound containing 10 different elements in the B-sublattice, where 50% of them are acceptors. For the most promising materials, van't Hoff plots were created and the enthalpies and entropies of hydration were calculated. At higher temperatures, these parameters do not differ from the values for the reference yttrium doped barium zirconate. However, at lower temperatures they are more negative, indicating a more exothermic process of proton incorporation.
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Affiliation(s)
- Aleksandra Mielewczyk-Gryń
- Institute of Nanotechnology and Materials Engineering, Faculty of Applied Physics and Mathematics, and Advanced Materials Centre, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Tamilarasan Subramani
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, AZ 85287, USA
| | - Daniel Jaworski
- Institute of Nanotechnology and Materials Engineering, Faculty of Applied Physics and Mathematics, and Advanced Materials Centre, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Kristina Lilova
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, AZ 85287, USA
| | - Wojciech Skubida
- Institute of Nanotechnology and Materials Engineering, Faculty of Applied Physics and Mathematics, and Advanced Materials Centre, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Alexandra Navrotsky
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, AZ 85287, USA
| | - Maria Gazda
- Institute of Nanotechnology and Materials Engineering, Faculty of Applied Physics and Mathematics, and Advanced Materials Centre, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland.
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Ushakov SV, Hong QJ, Gilbert DA, Navrotsky A, van de Walle A. Thorium and Rare Earth Monoxides and Related Phases. Materials (Basel) 2023; 16:1350. [PMID: 36836980 PMCID: PMC9961815 DOI: 10.3390/ma16041350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 01/20/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
Thorium was a part of energy infrastructure in the 19th century due to the refractory and electronic properties of its dioxide. It will be a part of future energy infrastructure as the most abundant energy reserve based on nuclear fission. This paper discusses the solid-state chemistry of the monoxides and related rocksalt phases of thorium and the rare earths, both at atmospheric and at high pressure. The existence of solid thorium monoxide was first suggested more than 100 years ago; however, it was never obtained in bulk and has been studied mostly theoretically. Monoxides of lanthanides from Eu to Ho are ferromagnetic semiconductors sought for spintronics and were studied in thin films. La to Sm metallic monoxides were synthesized in bulk at pressures below 5 GPa. Recently, ThO formation in thin films has been reported and the stability of bulk ThO at high pressure was theoretically predicted based on first principles computations at 0 K. New ab initio computations were performed accounting for temperature effects up to 1000 K using lattice dynamics in the quasi-harmonic approximation. New computational results confirm the stabilization of pure ThO above 30 GPa and suggest the possibility of high-pressure synthesis of (Th,Nd)O at 1000 K and 5 GPa.
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Affiliation(s)
- Sergey V. Ushakov
- Center for Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, AZ 85287, USA
- Joulemet Association, Pullman, WA 99163, USA
| | - Qi-Jun Hong
- School for Engineering of Transport, Energy and Matter, Arizona State University, Tempe, AZ 85287, USA
| | - Dustin A. Gilbert
- Materials Science and Engineering Department, University of Tennessee, Knoxville, TN 37996, USA
| | - Alexandra Navrotsky
- Center for Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, AZ 85287, USA
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Mielewczyk-Gryń A, Yang S, Balaguer M, Strandbakke R, Sørby MH, Szpunar I, Witkowska A, Wachowski S, Serra JM, Navrotsky A, Gazda M. Energetics of formation and stability in high pressure steam of barium lanthanide cobaltite double perovskites. Dalton Trans 2023; 52:5771-5779. [PMID: 37038971 DOI: 10.1039/d2dt03989c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
This study concerns energetics of formation and the stability in high water partial pressure of BaLnCo2O6-δ, (Ln = La, Pr, Nd, and Gd) (BLnC) and BaGd1-xLaxCo2O6-δ, where x = 0.2,...
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Affiliation(s)
- Aleksandra Mielewczyk-Gryń
- Institute of Nanotechnology and Materials Engineering, Faculty of Applied Physics and Mathematics, and Advanced Materials Centre, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Shuhao Yang
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, AZ 85287, USA
| | - Maria Balaguer
- Instituto de Tecnología Química, Universitat Politècnica de València, Consejo Superior de Investigaciones Científicas, Av. Naranjos s/n, E-46022 Valencia, Spain
| | - Ragnar Strandbakke
- Department of Chemistry, Centre for Materials Science and Nanotechnology (SMN), University of Oslo, Oslo, Norway
- Department of Sustainable Energy Technology, SINTEF Industry, Oslo, Norway
| | - Magnus H Sørby
- Institute for Energy Technology, Department for Hydrogen Technology, P.O. Box 40, Kjeller, 2027, Norway
| | - Iga Szpunar
- Institute of Nanotechnology and Materials Engineering, Faculty of Applied Physics and Mathematics, and Advanced Materials Centre, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Agnieszka Witkowska
- Institute of Nanotechnology and Materials Engineering, Faculty of Applied Physics and Mathematics, and Advanced Materials Centre, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Sebastian Wachowski
- Institute of Nanotechnology and Materials Engineering, Faculty of Applied Physics and Mathematics, and Advanced Materials Centre, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Jose M Serra
- Instituto de Tecnología Química, Universitat Politècnica de València, Consejo Superior de Investigaciones Científicas, Av. Naranjos s/n, E-46022 Valencia, Spain
| | - Alexandra Navrotsky
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, AZ 85287, USA
| | - Maria Gazda
- Institute of Nanotechnology and Materials Engineering, Faculty of Applied Physics and Mathematics, and Advanced Materials Centre, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland.
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12
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Jayanthi K, Chaupatnaik A, Barpanda P, Navrotsky A. Probing Capacity Trends in MLi 2Ti 6O 14 Lithium-Ion Battery Anodes Using Calorimetric Studies. ACS Omega 2022; 7:42482-42488. [PMID: 36440143 PMCID: PMC9685767 DOI: 10.1021/acsomega.2c05701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
Due to higher packing density, lower working potential, and area specific impedance, the MLi2Ti6O14 (M = 2Na, Sr, Ba, and Pb) titanate family is a potential alternative to zero-strain Li4Ti5O12 anodes used commercially in Li-ion batteries. However, the exact lithiation mechanism in these compounds remains unclear. Despite its structural similarity, MLi2Ti6O14 behaves differently depending on charge and size of the metal ion, hosting 1.3, 2.7, 2.9, and 4.4 Li per formula unit, giving charge capacity values from 60 to 160 mAh/g in contrast to the theoretical capacity trend. However, high-temperature oxide melt solution calorimetry measurements confirm strong correlation between thermodynamic stability and the observed capacity. The main factors controlling energetics are strong acid-base interactions between basic oxides MO, Li2O and acidic TiO2, size of the cation, and compressive strain. Accordingly, the energetic stability diminishes in the order Na2Li2Ti6O14 > BaLi2Ti6O14 > SrLi2Ti6O14 > PbLi2Ti6O14. This sequence is similar to that in many other oxide systems. This work exhibits that thermodynamic systematics can serve as guidelines for the choice of composition for building better batteries.
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Affiliation(s)
- K. Jayanthi
- School
of Molecular Sciences and Navrotsky Eyring Center for Materials of
the Universe, Arizona State University, Tempe, Arizona 85287, United States
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Anshuman Chaupatnaik
- Faraday
Materials Laboratory, Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
- Chimie
du Solide-Energie, UMR 8260, Collège
de France, Paris 75001, France
| | - Prabeer Barpanda
- Faraday
Materials Laboratory, Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
- Helmholtz
Institute Ulm (HIU), Electrochemical Energy Storage, Ulm 89081, Germany
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology (KIT), Karlsruhe 76021, Germany
| | - Alexandra Navrotsky
- School
of Molecular Sciences and Navrotsky Eyring Center for Materials of
the Universe, Arizona State University, Tempe, Arizona 85287, United States
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13
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Sella A, Navrotsky A. Paul McMillan (1956-2022). Nat Mater 2022; 21:490. [PMID: 35468943 DOI: 10.1038/s41563-022-01243-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- Andrea Sella
- Department of Chemistry, University of London, London, UK.
| | - Alexandra Navrotsky
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, AZ, USA.
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14
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Abstract
The thermodynamic stability of rare earth (RE) materials plays a key role in the design of separation and recycling processes for RE elements. Thermodynamic stability is fundamentally influenced by the lanthanide contraction, as observed in the systematic reduction of unit cell volumes with increasing atomic number. RE materials are found in the form of solids having primary bonds in three dimensions (3D materials) as well as ones with primary bonds in two dimensions (2D materials) whose layers are held together by weak van der Waals (vdW) forces. While studies of synthesis, structure, and physical properties of 2D RE materials are numerous, no systematic research has compared their thermodynamic stability to that of 3D materials. In the present work, RE oxychlorides (REOCls), which display a structural transition from a 3D-polyhedral network (PbFCl-type) to a vdW-bonded layered one (SmSI-type) as the RE size decreases, were all synthesized by the flux method. High-temperature oxide melt solution calorimetry was used to determine their formation enthalpies to enable Born-Haber cycles to calculate lattice energies. Our results indicate that REOCl compounds are thermodynamically stable when compared to their binary oxides and chlorides. The lattice energies of 3D REOCls increase with decreasing RE size yet are insensitive to unit cell volumes for 2D REOCls. This is caused by interatomic interactions parallel and perpendicular to layers in the SmSI-type REOCls, causing a different structure response to the lanthanide contraction than 3D RE materials.
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Affiliation(s)
- Shuhao Yang
- Navrotsky Eyring Center for Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States.,Department of Chemistry, University of California, Davis, California 95616, United States
| | - Andrzej Anderko
- OLI Systems, Inc., Parsippany, New Jersey 07054, United States
| | - Richard E Riman
- Department of Materials Science and Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Alexandra Navrotsky
- Navrotsky Eyring Center for Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
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15
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Jayanthi K, Spanopoulos I, Zibouche N, Voskanyan AA, Vasileiadou ES, Islam MS, Navrotsky A, Kanatzidis MG. Entropy Stabilization Effects and Ion Migration in 3D "Hollow" Halide Perovskites. J Am Chem Soc 2022; 144:8223-8230. [PMID: 35482958 DOI: 10.1021/jacs.2c01383] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A recently discovered new family of 3D halide perovskites with the general formula (A)1-x(en)x(Pb)1-0.7x(X)3-0.4x (A = MA, FA; X = Br, I; MA = methylammonium, FA = formamidinium, en = ethylenediammonium) is referred to as "hollow" perovskites owing to extensive Pb and X vacancies created on incorporation of en cations in the 3D network. The "hollow" motif allows fine tuning of optical, electronic, and transport properties and bestowing good environmental stability proportional to en loading. To shed light on the origin of the apparent stability of these materials, we performed detailed thermochemical studies, using room temperature solution calorimetry combined with density functional theory simulations on three different families of "hollow" perovskites namely en/FAPbI3, en/MAPbI3, and en/FAPbBr3. We found that the bromide perovskites are more energetically stable compared to iodide perovskites in the FA-based hollow compounds, as shown by the measured enthalpies of formation and the calculated formation energies. The least stable FAPbI3 gains stability on incorporation of the en cation, whereas FAPbBr3 becomes less stable with en loading. This behavior is attributed to the difference in the 3D cage size in the bromide and iodide perovskites. Configurational entropy, which arises from randomly distributed cation and anion vacancies, plays a significant role in stabilizing these "hollow" perovskite structures despite small differences in their formation enthalpies. With the increased vacancy defect population, we have also examined halide ion migration in the FA-based "hollow" perovskites and found that the migration energy barriers become smaller with the increasing en content.
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Affiliation(s)
- K Jayanthi
- School of Molecular Sciences and Navrotsky Eyring Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
| | - Ioannis Spanopoulos
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States.,Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | | | - Albert A Voskanyan
- School of Molecular Sciences and Navrotsky Eyring Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
| | - Eugenia S Vasileiadou
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - M Saiful Islam
- Department of Chemistry, University of Bath, Bath BA2 7AY, U.K..,Department of Materials, University of Oxford, Oxford OX1 3PH, U.K
| | - Alexandra Navrotsky
- School of Molecular Sciences and Navrotsky Eyring Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
| | - Mercouri G Kanatzidis
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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16
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Singh S, Neveu A, Jayanthi K, Das T, Chakraborty S, Navrotsky A, Pralong V, Barpanda P. Facile Synthesis and Phase Stability of Cu-based Na 2Cu(SO 4) 2.xH 2O (x = 0-2) Sulfate Minerals as Conversion type Battery Electrodes. Dalton Trans 2022; 51:11169-11179. [DOI: 10.1039/d2dt01830f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mineral exploration forms a key approach to unveil functional battery electrode materials. Synthetic preparation of naturally found minerals and their derivatives can aid in design of new electrodes. Herein, saranchinaite...
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17
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Stagg O, Morris K, Lam A, Navrotsky A, Velázquez JM, Schacherl B, Vitova T, Rothe J, Galanzew J, Neumann A, Lythgoe P, Abrahamsen-Mills L, Shaw S. Fe(II) Induced Reduction of Incorporated U(VI) to U(V) in Goethite. Environ Sci Technol 2021; 55:16445-16454. [PMID: 34882383 DOI: 10.1021/acs.est.1c06197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Over 60 years of nuclear activities have resulted in a global legacy of radioactive wastes, with uranium considered a key radionuclide in both disposal and contaminated land scenarios. With the understanding that U has been incorporated into a range of iron (oxyhydr)oxides, these minerals may be considered a secondary barrier to the migration of radionuclides in the environment. However, the long-term stability of U-incorporated iron (oxyhydr)oxides is largely unknown, with the end-fate of incorporated species potentially impacted by biogeochemical processes. In particular, studies show that significant electron transfer may occur between stable iron (oxyhydr)oxides such as goethite and adsorbed Fe(II). These interactions can also induce varying degrees of iron (oxyhydr)oxide recrystallization (<4% to >90%). Here, the fate of U(VI)-incorporated goethite during exposure to Fe(II) was investigated using geochemical analysis and X-ray absorption spectroscopy (XAS). Analysis of XAS spectra revealed that incorporated U(VI) was reduced to U(V) as the reaction with Fe(II) progressed, with minimal recrystallization (approximately 2%) of the goethite phase. These results therefore indicate that U may remain incorporated within goethite as U(V) even under iron-reducing conditions. This develops the concept of iron (oxyhydr)oxides acting as a secondary barrier to radionuclide migration in the environment.
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Affiliation(s)
- Olwen Stagg
- Research Centre for Radwaste Disposal and Williamson Research Centre for Molecular Environmental Science, Department of Earth and Environmental Sciences, The University of Manchester, Manchester, M13 9PL, United Kingdom
| | - Katherine Morris
- Research Centre for Radwaste Disposal and Williamson Research Centre for Molecular Environmental Science, Department of Earth and Environmental Sciences, The University of Manchester, Manchester, M13 9PL, United Kingdom
| | - Andy Lam
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California Davis, Davis, California 95616, United States
| | - Alexandra Navrotsky
- School of Molecular Sciences and Navrotsky Eyring Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
| | - Jesús M Velázquez
- Department of Chemistry, University of California─Davis, Davis, California 95616, United States
| | - Bianca Schacherl
- Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology, Karlsruhe 76131, Germany
| | - Tonya Vitova
- Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology, Karlsruhe 76131, Germany
| | - Jörg Rothe
- Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology, Karlsruhe 76131, Germany
| | - Jurij Galanzew
- Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology, Karlsruhe 76131, Germany
| | - Anke Neumann
- School of Engineering, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom
| | - Paul Lythgoe
- Manchester Analytical Geochemistry Unit, The University of Manchester, Manchester, M13 9PL, United Kingdom
| | | | - Samuel Shaw
- Research Centre for Radwaste Disposal and Williamson Research Centre for Molecular Environmental Science, Department of Earth and Environmental Sciences, The University of Manchester, Manchester, M13 9PL, United Kingdom
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18
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Subramani T, Voskanyan A, Jayanthi K, Abramchuk M, Navrotsky A. A Comparison of Order-Disorder in Several Families of Cubic Oxides. Front Chem 2021; 9:719169. [PMID: 34540800 PMCID: PMC8440809 DOI: 10.3389/fchem.2021.719169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 08/02/2021] [Indexed: 11/23/2022] Open
Abstract
Order-disorder on both cation and oxygen sites is a hallmark of fluorite-derived structures, including pyrochlores. Ordering can occur on long- and short-range scales and can result in persistent metastable states. In various cubic oxide systems, different types of disorder are seen. The purpose of this paper is to review and compare the types and energetics of order-disorder phenomena in several families of cubic oxides having pyrochlore, weberite, defect fluorite, perovskite, rocksalt, and spinel structures. The goal is to better understand how structure, composition, and thermodynamic parameters (enthalpy and entropy) determine the feasibility of different competing ordering processes and structures in these diverse systems.
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Affiliation(s)
| | | | | | | | - A. Navrotsky
- School of Molecular Sciences and Navrotsky Eyring Center for Materials of the Universe, Arizona State University, Tempe, AZ, United States
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19
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Navrotsky A. Pressure-induced structural changes cause large enhancement of photoluminescence in halide perovskites: a quantitative relationship. Natl Sci Rev 2021; 8:nwab041. [PMID: 34691736 PMCID: PMC8433077 DOI: 10.1093/nsr/nwab041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/04/2021] [Accepted: 03/07/2021] [Indexed: 11/12/2022] Open
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20
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Niu M, Gao H, Zhao Z, Wang H, Su L, Zhuang L, Jia S, Navrotsky A. Radiation Effects in the Crystalline-Amorphous SiOC Polymer-Derived Ceramics: Insights from Experiments and Molecular Dynamics Simulation. ACS Appl Mater Interfaces 2021; 13:40106-40117. [PMID: 34383473 DOI: 10.1021/acsami.1c10917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Radiation-tolerant materials are in great demand for safe operation and advancement of nuclear and aerospace systems. Nanostructuring is a key strategy to improve the radiation tolerance of materials. SiOC polymer-derived ceramics (PDCs) are unique synthetic nanocomposites consisting of β-SiC nanocrystals and turbostratic graphite distributed in amorphous SiOC matrix, which are "all-rounder" materials for many advanced structural and functional applications. Radiation effects in the crystalline-amorphous system have been investigated in detail by experiments and molecular dynamics (MD) simulations. The results indicate that the amorphous SiOC structure retains amorphous accompanied by redistribution of the Si-containing tetrahedra. The graphite is shown to amorphize more easily than β-SiC nanocrystals under the same irradiation condition. The sample richer in oxygen, namely, containing more amorphous SiOC, shows less disordering of graphite, resulting from greater mitigation of radiation damage by the amorphous phase as efficient sinks. This study provides details of the microstructure evolution of SiOC PDCs under ion irradiation, as well as insights for the design and development of advanced ion damage-resistant materials.
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Affiliation(s)
- Min Niu
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Hongfei Gao
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Zihao Zhao
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Hongjie Wang
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Lei Su
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Lei Zhuang
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Shuhai Jia
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Alexandra Navrotsky
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
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21
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Shelyug A, Rafiuddin MR, Mesbah A, Clavier N, Szenknect S, Dacheux N, Guo X, Navrotsky A. Effect of Annealing on Structural and Thermodynamic Properties of ThSiO 4-ErPO 4 Xenotime Solid Solution. Inorg Chem 2021; 60:12020-12028. [PMID: 34328730 DOI: 10.1021/acs.inorgchem.1c01137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The effect of annealing on structural and thermochemical properties of a thorite-xenotime solid solution Th1-xErx(SiO4)1-x(PO4)x was assessed. The samples synthesized at low temperatures and stored at room temperature for 2 years retained their tetragonal structures. This structure was also maintained after heating to 1100 °C. During annealing, the structure lost water and exsolved some thorianite phases. The thermodynamic parameters did not change much after annealing, suggesting that xenotime was not a low-temperature metastable phase but rather a stable structure able to withstand elevated temperatures regardless of the thorium content. The solid solution exhibited subregular behavior with the Margules function W(x) = (73.1 ± 20.1) - (125.7 ± 49.8)·x.
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Affiliation(s)
- Anna Shelyug
- Institute of Solid State Chemistry, Yekaterinburg 620990, Russia
| | | | - Adel Mesbah
- ICSM, Univ Montpellier, CNRS, CEA, ENSCM, Site de Marcoule, Bagnols-sur-Cèze 30207, France.,Institut de Recherches sur la Catalyse et l'Environnement de Lyon, IRCELYON, UMR5256, CNRS, Univ Lyon, Université Lyon 1, 2 Avenue Albert Einstein, Villeurbanne Cedex 69626, France
| | - Nicolas Clavier
- ICSM, Univ Montpellier, CNRS, CEA, ENSCM, Site de Marcoule, Bagnols-sur-Cèze 30207, France
| | - Stéphanie Szenknect
- ICSM, Univ Montpellier, CNRS, CEA, ENSCM, Site de Marcoule, Bagnols-sur-Cèze 30207, France
| | - Nicolas Dacheux
- ICSM, Univ Montpellier, CNRS, CEA, ENSCM, Site de Marcoule, Bagnols-sur-Cèze 30207, France
| | - Xiaofeng Guo
- Department of Chemistry and Alexandra Navrotsky Institute for Experimental Thermodynamics, Washington State University, Pullman, Washington 99164, United States
| | - Alexandra Navrotsky
- School of Molecular Sciences a Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
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22
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Arhangelskis M, Xu Y, Darby JP, Novendra N, Marrett JM, Katsenis AD, Titi HM, Morris AJ, Friščić T, Navrotsky A. Computational design and prediction of solid-state properties of metal–organic frameworks. Acta Crystallogr A Found Adv 2021. [DOI: 10.1107/s0108767321096033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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23
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Sugie C, Navrotsky A, Lauterbach S, Kleebe HJ, Mera G. Structure and Thermodynamics of Silicon Oxycarbide Polymer-Derived Ceramics with and without Mixed-Bonding. Materials (Basel) 2021; 14:ma14154075. [PMID: 34361269 PMCID: PMC8347565 DOI: 10.3390/ma14154075] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/16/2021] [Accepted: 07/19/2021] [Indexed: 11/16/2022]
Abstract
Silicon oxycarbides synthesized through a conventional polymeric route show characteristic nanodomains that consist of sp2 hybridized carbon, tetrahedrally coordinated SiO4, and tetrahedrally coordinated silicon with carbon substitution for oxygen, called “mixed bonds.” Here we synthesize two preceramic polymers possessing both phenyl substituents as unique organic groups. In one precursor, the phenyl group is directly bonded to silicon, resulting in a SiOC polymer-derived ceramic (PDC) with mixed bonding. In the other precursor, the phenyl group is bonded to the silicon through Si-O-C bridges, which results in a SiOC PDC without mixed bonding. Radial breathing-like mode bands in the Raman spectra reveal that SiOC PDCs contain carbon nanoscrolls with spiral-like rolled-up geometry and open edges at the ends of their structure. Calorimetric measurements of the heat of dissolution in a molten salt solvent show that the SiOC PDCs with mixed bonding have negative enthalpies of formation with respect to crystalline components (silicon carbide, cristobalite, and graphite) and are more thermodynamically stable than those without. The heats of formation from crystalline SiO2, SiC, and C of SiOC PDCs without mixed bonding are close to zero and depend on the pyrolysis temperature. Solid state MAS NMR confirms the presence or absence of mixed bonding and further shows that, without mixed bonding, terminal hydroxyls are bound to some of the Si-O tetrahedra. This study indicates that mixed bonding, along with additional factors, such as the presence of terminal hydroxyl groups, contributes to the thermodynamic stability of SiOC PDCs.
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Affiliation(s)
- Casey Sugie
- Department of Chemistry, University of California Davis, Davis, CA 95616, USA;
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California Davis, Davis, CA 95616, USA;
| | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California Davis, Davis, CA 95616, USA;
- Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, AZ 851281, USA
| | - Stefan Lauterbach
- Institut für Angewandte Geowissenschaften, Technische Universität Darmstadt, Schnittspahnstraße 9, D-64287 Darmstadt, Germany; (S.L.); (H.-J.K.)
| | - Hans-Joachim Kleebe
- Institut für Angewandte Geowissenschaften, Technische Universität Darmstadt, Schnittspahnstraße 9, D-64287 Darmstadt, Germany; (S.L.); (H.-J.K.)
| | - Gabriela Mera
- Institut für Materialwissenschaft, Technische Universität Darmstadt, Otto-Berndt-Straße 3, D-64287 Darmstadt, Germany
- Correspondence:
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24
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Nenoff TM, Rademacher DX, Rodriguez MA, Garino TJ, Subramani T, Navrotsky A. Structure-property and thermodynamic relationships in rare earth (Y, Eu, Pr) iridate pyrochlores. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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25
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Abramchuk M, Voskanyan AA, Arinicheva Y, Lilova K, Subramani T, Ma Q, Dashjav E, Finsterbusch M, Navrotsky A. Energetic Stability and Its Role in the Mechanism of Ionic Transport in NASICON-Type Solid-State Electrolyte Li 1+xAl xTi 2-x(PO 4) 3. J Phys Chem Lett 2021; 12:4400-4406. [PMID: 33944567 DOI: 10.1021/acs.jpclett.1c00925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We apply high-temperature oxide melt solution calorimetry to assess the thermodynamic properties of the material Li1+xAlxTi2-x(PO4)3, which has been broadly recognized as one of the best Li-ion-conducting solid electrolytes of the NASICON family. The experimental results reveal large exothermic enthalpies of formation from binary oxides (ΔHf,ox°) and elements (ΔHf,el°) for all compositions in the range 0 ≤ x ≤ 0.5. This indicates substantial stability of Li1+xAlxTi2-x(PO4)3, driven by thermodynamics and not just kinetics, during long-term battery operation. The stability increases with increasing Al3+ content. Furthermore, the dependence of the formation enthalpy on the Al3+ content shows a change in behavior at x = 0.3, a composition near which the Li+ conductivity reaches the highest values. The strong correlation among thermodynamic stability, ionic transport, and clustering is a general phenomenon in ionic conductors that is independent of the crystal structure as well as the type of charge carrier. Therefore, the thermodynamic results can serve as guidelines for the selection of compositions with potentially the highest Li+ conductivity among different NASICON-type series with variable dopant contents.
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Affiliation(s)
- Mykola Abramchuk
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
| | - Albert A Voskanyan
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
| | - Yulia Arinicheva
- Materials Synthesis and Processing (IEK-1), Institute for Energy and Climate Research, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Kristina Lilova
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
| | - Tamilarasan Subramani
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
| | - Qianli Ma
- Materials Synthesis and Processing (IEK-1), Institute for Energy and Climate Research, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Enkhtsetseg Dashjav
- Materials Synthesis and Processing (IEK-1), Institute for Energy and Climate Research, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Martin Finsterbusch
- Materials Synthesis and Processing (IEK-1), Institute for Energy and Climate Research, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Alexandra Navrotsky
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
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Guefrachi Y, Sharma G, Xu D, Kumar G, Vinter KP, Abdelrahman OA, Li X, Alhassan S, Dauenhauer PJ, Navrotsky A, Zhang W, Tsapatsis M. Corrigendum: Steam‐Induced Coarsening of Single‐Unit‐Cell MFI Zeolite Nanosheets and Its Effect on External Surface Brønsted Acid Catalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/anie.202016812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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Guefrachi Y, Sharma G, Xu D, Kumar G, Vinter KP, Abdelrahman OA, Li X, Alhassan S, Dauenhauer PJ, Navrotsky A, Zhang W, Tsapatsis M. Berichtigung: Steam‐Induced Coarsening of Single‐Unit‐Cell MFI Zeolite Nanosheets and Its Effect on External Surface Brønsted Acid Catalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Vasileiadou ES, Wang B, Spanopoulos I, Hadar I, Navrotsky A, Kanatzidis MG. Insight on the Stability of Thick Layers in 2D Ruddlesden–Popper and Dion–Jacobson Lead Iodide Perovskites. J Am Chem Soc 2021; 143:2523-2536. [DOI: 10.1021/jacs.0c11328] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eugenia S. Vasileiadou
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Bin Wang
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California Davis, Davis, California 95616, United States
| | - Ioannis Spanopoulos
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Ido Hadar
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California Davis, Davis, California 95616, United States
- School of Molecular Sciences, School for Engineering of Matter, Transport and Energy, and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
| | - Mercouri G. Kanatzidis
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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29
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Navrotsky A, Hervig R, Lyons J, Seo DK, Shock E, Voskanyan A. Cooperative formation of porous silica and peptides on the prebiotic Earth. Proc Natl Acad Sci U S A 2021; 118:e2021117118. [PMID: 33376204 PMCID: PMC7812765 DOI: 10.1073/pnas.2021117118] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Modern technology has perfected the synthesis of catalysts such as zeolites and mesoporous silicas using organic structure directing agents (SDA) and their industrial use to catalyze a large variety of organic reactions within their pores. We suggest that early in prebiotic evolution, synergistic interplay arose between organic species in aqueous solution and silica formed from rocks by dynamic dissolution-recrystallization. The natural organics, for example, amino acids, small peptides, and fatty acids, acted as SDA for assembly of functional porous silica structures that induced further polymerization of amino acids and peptides, as well as other organic reactions. Positive feedback between synthesis and catalysis in the silica-organic system may have accelerated the early stages of abiotic evolution by increasing the formation of polymerized species.
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Affiliation(s)
- Alexandra Navrotsky
- Center for Materials of the Universe, Arizona State University, Tempe, AZ 85287;
- School of Molecular Sciences, Arizona State University, Tempe, AZ 85287
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ 85287
| | - Richard Hervig
- Center for Materials of the Universe, Arizona State University, Tempe, AZ 85287
- School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287
| | - James Lyons
- Center for Materials of the Universe, Arizona State University, Tempe, AZ 85287
- School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287
| | - Dong-Kyun Seo
- Center for Materials of the Universe, Arizona State University, Tempe, AZ 85287
- School of Molecular Sciences, Arizona State University, Tempe, AZ 85287
| | - Everett Shock
- Center for Materials of the Universe, Arizona State University, Tempe, AZ 85287
- School of Molecular Sciences, Arizona State University, Tempe, AZ 85287
- School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287
| | - Albert Voskanyan
- Center for Materials of the Universe, Arizona State University, Tempe, AZ 85287
- School of Molecular Sciences, Arizona State University, Tempe, AZ 85287
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Novendra N, Marrett JM, Katsenis AD, Titi HM, Arhangelskis M, Friščić T, Navrotsky A. Linker Substituents Control the Thermodynamic Stability in Metal–Organic Frameworks. J Am Chem Soc 2020; 142:21720-21729. [DOI: 10.1021/jacs.0c09284] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Novendra Novendra
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California Davis, One Shields Avenue, Davis, California 95616, United States
| | - Joseph M. Marrett
- Department of Chemistry, McGill University, Montreal, Quebec H3A 0B8, Canada
| | | | - Hatem M. Titi
- Department of Chemistry, McGill University, Montreal, Quebec H3A 0B8, Canada
| | - Mihails Arhangelskis
- Department of Chemistry, McGill University, Montreal, Quebec H3A 0B8, Canada
- Department of Chemistry, University of Warsaw, 1 Pasteura Street, Warsaw 02-093, Poland
| | - Tomislav Friščić
- Department of Chemistry, McGill University, Montreal, Quebec H3A 0B8, Canada
| | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California Davis, One Shields Avenue, Davis, California 95616, United States
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
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31
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Drey DL, O'Quinn EC, Subramani T, Lilova K, Baldinozzi G, Gussev IM, Fuentes AF, Neuefeind JC, Everett M, Sprouster D, Navrotsky A, Ewing RC, Lang M. Disorder in Ho 2Ti 2-x Zr x O 7: pyrochlore to defect fluorite solid solution series. RSC Adv 2020; 10:34632-34650. [PMID: 35514412 PMCID: PMC9056788 DOI: 10.1039/d0ra07118h] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 09/08/2020] [Indexed: 11/21/2022] Open
Abstract
Pyrochlore (A2B2O7) is an important, isometric structure-type because of its large variety of compositions and structural derivatives that are generally related to different disordering mechanisms at various spatial scales. The disordering is key to understanding variations in properties, such as magnetic behavior or ionic conduction. Neutron and X-ray total scattering methods were used to investigate the degree of structural disorder in the Ho2Ti2-x Zr x O7 (x = 0.0-2.0, Δx = 0.25) solid solution series as a function of the Zr-content, x. Ordered pyrochlores (Fd3̄m) disorder to defect fluorite (Fm3̄m) via cation and anion disordering. Total scattering experiments with sensitivity to the cation and anion sublattices provide unique insight into the underlying atomic processes. Using simultaneous Rietveld refinement (long-range structure) and small-box refinement PDF analysis (short-range structure), we show that the series undergoes a rapid transformation from pyrochlore to defect fluorite at x ≈ 1.2, while the short-range structure exhibits a linear increase in a local weberite-type phase, C2221, over the entire composition range. Enthalpies of formation from the oxides determined using high temperature oxide melt solution calorimetry support the structural data and provide insight into the effect of local ordering on the energetics of disorder. The measured enthalpies of mixing are negative and are fit by a regular solution parameter of W = -31.8 ± 3.7 kJ mol-1. However, the extensive short-range ordering determined from the structural analysis strongly suggests that the entropies of mixing must be far less positive than implied by the random mixing of a regular solution. We propose a local disordering scheme involving the pyrochlore 48f to 8a site oxygen Frenkel defect that creates 7-coordinated Zr sites contained within local weberite-type coherent nanodomains. Thus, the solid solution is best described as a mixture of two phases, with the weberite-type nanodomains triggering the long-range structural transformation to defect fluorite after accumulation above a critical concentration (50% Ti replaced by Zr).
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Affiliation(s)
- Devon L Drey
- Department of Nuclear Engineering, University of Tennessee Knoxville TN 37996 USA
| | - Eric C O'Quinn
- Department of Nuclear Engineering, University of Tennessee Knoxville TN 37996 USA
| | - Tamilarasan Subramani
- School of Molecular Sciences, Center for Materials of the Universe, Arizona State University Tempe AZ 85287 USA
| | - Kristina Lilova
- School of Molecular Sciences, Center for Materials of the Universe, Arizona State University Tempe AZ 85287 USA
| | - Gianguido Baldinozzi
- Laboratoire Structures, Propriétés et Modélisation des Solides, CNRS, Centrale Supélec, Université Paris-Saclay F-91190 Gif-sur-Yvette France
| | - Igor M Gussev
- Department of Nuclear Engineering, University of Tennessee Knoxville TN 37996 USA
| | | | - Joerg C Neuefeind
- Neutron Scattering Division, Oak Ridge National Laboratory Oak Ridge TN 37831 USA
| | - Michelle Everett
- Neutron Scattering Division, Oak Ridge National Laboratory Oak Ridge TN 37831 USA
| | - David Sprouster
- Department of Materials Science and Chemical Engineering, State University of New York Stony Brook NY 11794 USA
| | - Alexandra Navrotsky
- School of Molecular Sciences, Center for Materials of the Universe, Arizona State University Tempe AZ 85287 USA
| | - Rodney C Ewing
- Department of Geological Sciences, Stanford University Stanford CA 94305 USA
| | - Maik Lang
- Department of Nuclear Engineering, University of Tennessee Knoxville TN 37996 USA
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32
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Winiarz P, Mielewczyk-Gryń A, Lilova K, Wachowski S, Subramani T, Abramchuk M, Dzik E, Navrotsky A, Gazda M. Conductivity, structure, and thermodynamics of Y 2Ti 2O 7-Y 3NbO 7 solid solutions. Dalton Trans 2020; 49:10839-10850. [PMID: 32705110 DOI: 10.1039/d0dt02156c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The defect fluorite yttrium niobate Y3NbO7 and pyrochlore yttrium titanate Y2Ti2O7 solid solutions have been synthesized via a solid state synthesis route. The resulting stoichiometry of the oxides is Y2+xTi2-2xNbxO7, where x = 0 to x = 1. All of the samples were single-phase; however, for those with a predominant fluorite phase, a small amount of additional pyrochlore phase was detected. The volume of the solid solution unit cells linearly increases with increase in yttrium niobate content. The water uptake increases with (x) and the protonic defect concentration reaches almost 4.5 × 10-3 mol mol-1 at 300 °C. The calculated enthalpy of formation from oxides suggests strong stability for all of the compositions, with the values of enthalpy ranging from -84.6 to -114.3 kJ mol-1. The total conductivity does not have a visible dependence on Y3NbO7 content. For each compound, the total conductivity is higher in wet air. Interestingly, for samples where x < 0.5, the ratio of conductivity in hydrogen to air increases with increasing temperature, while for x > 0.5, the trend is the opposite.
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Affiliation(s)
- Piotr Winiarz
- Gdańsk University of Technology, Faculty of Applied Physics and Mathematics, Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Aleksandra Mielewczyk-Gryń
- Gdańsk University of Technology, Faculty of Applied Physics and Mathematics, Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Kristina Lilova
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, AZ 85287, USA
| | - Sebastian Wachowski
- Gdańsk University of Technology, Faculty of Applied Physics and Mathematics, Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Tamilarasan Subramani
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, AZ 85287, USA
| | - Mykola Abramchuk
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, AZ 85287, USA
| | - Ewa Dzik
- Gdańsk University of Technology, Faculty of Applied Physics and Mathematics, Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Alexandra Navrotsky
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, AZ 85287, USA
| | - Maria Gazda
- Gdańsk University of Technology, Faculty of Applied Physics and Mathematics, Narutowicza 11/12, 80-233 Gdańsk, Poland.
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33
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da Silva AL, Wu L, Caliman LB, Castro RHR, Navrotsky A, Gouvêa D. Energetics of CO 2 and H 2O adsorption on alkaline earth metal doped TiO 2. Phys Chem Chem Phys 2020; 22:15600-15607. [PMID: 32613967 DOI: 10.1039/d0cp01787f] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The process of CO2 and H2O adsorption on the surface of nano-oxide semiconductors is important in the overall performance of artificial photosynthesis and other applications. In this study, we explored the thermodynamics of CO2 and H2O adsorption on TiO2 as a function of surface chemistry. We applied gas adsorption calorimetry to investigate the energetics of adsorption of those molecules on the surface of anatase nanoparticles. In an attempt to increase TiO2 surface affinity to CO2 and H2O, TiO2 was doped with alkaline earth metals (MgO, CaO, SrO, and BaO) by manipulating the chemical synthesis. Adsorption studies using diffuse reflectance infrared spectroscopy at different temperatures indicate that due to the segregation of alkaline earth metals on the surface of TiO2 nanoparticles, both CO2 and subsequent H2O adsorption amounts could be increased. CO2 adsorbs in two different manners, forming carbonates which can be removed at temperatures lower than 700 °C, and a more stable linear adsorption that remains even at 700 °C. Additionally to the surface energetic effects, doping also increased specific surface area, resulting in further improvement in net gas adsorption.
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Affiliation(s)
- Andre Luiz da Silva
- Department of Metallurgical and Materials Engineering, Polytechnic School - University of São Paulo, São Paulo 05508-030, Brazil.
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Voskanyan A, Goncharov VG, Novendra N, Guo X, Navrotsky A. Thermodynamics Drives the Stability of the MOF-74 Family in Water. ACS Omega 2020; 5:13158-13163. [PMID: 32548502 PMCID: PMC7288594 DOI: 10.1021/acsomega.0c01189] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 05/12/2020] [Indexed: 05/12/2023]
Abstract
The stability of functional materials in water-containing environments is critical for their industrial applications. A wide variety of metal-organic frameworks (MOFs) synthesized in the past decade have strikingly different apparent stabilities in contact with liquid or gaseous H2O, ranging from rapid hydrolysis to persistence over days to months. Here, we show using newly determined thermochemical data obtained by high-temperature drop combustion calorimetry that these differences are thermodynamically driven rather than primarily kinetically controlled. The formation reaction of a MOF from metal oxide (MO) and a linker generally liberates water by the reaction MO + linker = MOF + H2O. Newly measured enthalpies of formation of Mg-MOF-74(s) + H2O(l) and Ni-MOF-74(s) + H2O(l) from their crystalline dense components, namely, the divalent MO (MgO or NiO) and 2,5-dihydroxyterephthalic acid, are 303.9 ± 17.2 kJ/mol of Mg for Mg-MOF-74 and 264.4 ± 19.4 kJ/mol of Ni for Ni-MOF-74. These strongly endothermic enthalpies of formation indicate that the reverse reaction, namely, the hydrolysis of these MOFs, is highly exothermic, strongly suggesting that this large thermodynamic driving force for hydrolysis is the reason why the MOF-74 family cannot be synthesized via hydrothermal routes and why these MOFs decompose on contact with moist air or water even at room temperature. In contrast, other MOFs studied previously, namely, zeolitic imidazolate frameworks (ZIF-zni, ZIF-1, ZIF-4, Zn(CF3Im)2, and ZIF-8), show enthalpies of formation in the range 20-40 kJ per mole of metal atom. These modest endothermic enthalpies of formation can be partially compensated by positive entropy terms arising from water release, and these materials do not react appreciably with H2O under ambient conditions. Thus, these differences in reactivity with water are thermodynamically controlled and energetics of formation, either measured or predicted, can be used to assess the extent of water sensitivity for different possible MOFs.
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Affiliation(s)
- Albert
A. Voskanyan
- Peter
A. Rock Thermochemistry Laboratory and NEAT ORU, University of California at Davis, Davis, California 95616, United States
- School
of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
| | - Vitaliy G. Goncharov
- Department
of Chemistry and Alexandra Navrotsky Institute for Experimental Thermodynamics, Washington State University, Pullman, Washington 99164, United States
| | - Novendra Novendra
- Peter
A. Rock Thermochemistry Laboratory and NEAT ORU, University of California at Davis, Davis, California 95616, United States
| | - Xiaofeng Guo
- Department
of Chemistry and Alexandra Navrotsky Institute for Experimental Thermodynamics, Washington State University, Pullman, Washington 99164, United States
| | - Alexandra Navrotsky
- Peter
A. Rock Thermochemistry Laboratory and NEAT ORU, University of California at Davis, Davis, California 95616, United States
- School
of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85287, United States
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36
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Agca C, Neuefeind JC, McMurray JW, Liu J, Benmore CJ, Weber RJK, Navrotsky A. In Situ High-Temperature Synchrotron Diffraction Studies of (Fe,Cr,Al) 3O 4 Spinels. Inorg Chem 2020; 59:5949-5957. [PMID: 32320222 DOI: 10.1021/acs.inorgchem.9b03726] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The modeling of a loss-of-coolant-accident scenario involving nuclear fuels with FeCrAl cladding materials in consideration to replace a Zircaloy requires knowledge of the thermodynamics of oxidized structures. At temperatures higher than 1500 °C, oxidation of FeCrAl alloys forms (Fe,Cr,Al)3O4 spinels. In situ high-energy X-ray diffraction in a conical nozzle levitator installed at beamline 6-ID-D of the APS was used to study the structural evolution of the oxides as a function of the temperature. Single-phase (spinel) and multiphase (spinel-corundum-FeAlO3) regions are mapped as a function of the temperature for three different compositions of FeCrAl oxidation products. The thermal expansion coefficients and cation distribution in the spinel structure have been refined. The temperature at which complete melting of the fuel cladding is expected has been determined by the liquidus temperatures of the oxidized products to be between 1657 and 1834 °C in a 20% O2/Ar atmosphere using the cooling trace method. The liquidus temperature increases with increasing Al and Cr content in the spinel phase.
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Affiliation(s)
- Can Agca
- Peter A. Rock Thermochemistry Laboratory, University of California-Davis (UC Davis), Davis, California 95616, United States.,Oak Ridge National Laboratory (ORNL), Oak Ridge, Tennessee 37831, United States
| | - Jörg C Neuefeind
- Oak Ridge National Laboratory (ORNL), Oak Ridge, Tennessee 37831, United States
| | - Jake W McMurray
- Oak Ridge National Laboratory (ORNL), Oak Ridge, Tennessee 37831, United States
| | - Jue Liu
- Oak Ridge National Laboratory (ORNL), Oak Ridge, Tennessee 37831, United States
| | - Chris J Benmore
- Advanced Photon Source (APS), Argonne National Laboratory (ANL), 9700 South Cass Avenue, Argonne, Illinois 60439, United States
| | - Richard J K Weber
- Advanced Photon Source (APS), Argonne National Laboratory (ANL), 9700 South Cass Avenue, Argonne, Illinois 60439, United States.,Materials Development, Inc., Arlington Heights, Illinois 60004, United States
| | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory, University of California-Davis (UC Davis), Davis, California 95616, United States.,Center for Materials of the Universe, School of Molecular Sciences, Arizona State University, Tempe, Arizona 85287, United States
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Roy S, Wu L, Goverapet Srinivasan S, Stack AG, Navrotsky A, Bryantsev VS. Hydration structure and water exchange kinetics at xenotime-water interfaces: implications for rare earth minerals separation. Phys Chem Chem Phys 2020; 22:7719-7727. [PMID: 32215419 DOI: 10.1039/d0cp00087f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Hydration of surface ions gives rise to structural heterogeneity and variable exchange kinetics of water at complex mineral-water interfaces. Here, we employ ab initio molecular dynamics (AIMD) simulations and water adsorption calorimetry to examine the aqueous interfaces of xenotime, a phosphate mineral that contains predominantly Y3+ and heavy rare earth elements. Consistent with natural crystal morphology, xenotime is predicted to have a tetragonal prismatic shape, dominated by the {100} surface. Hydration of this surface induces multilayer interfacial water structures with distinct OH orientations, which agrees with recent crystal truncation rod measurements. The exchange kinetics between two adjacent water layers exhibits a wide range of underlying timescales (5-180 picoseconds), dictated by ion-water electrostatics. Adsorption of a bidentate hydroxamate ligand reveals that {100} xenotime surface can only accommodate monodentate coordination with water exchange kinetics strongly depending on specific ligand orientation, prompting us to reconsider traditional strategies for selective separation of rare-earth minerals.
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Affiliation(s)
- Santanu Roy
- Chemical Sciences Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, TN 37830, USA.
| | - Lili Wu
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California Davis, 1 Shields Avenue, Davis, CA 95616, USA
| | | | - Andrew G Stack
- Chemical Sciences Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, TN 37830, USA.
| | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California Davis, 1 Shields Avenue, Davis, CA 95616, USA
| | - Vyacheslav S Bryantsev
- Chemical Sciences Division, Oak Ridge National Laboratory, 1 Bethel Valley Rd., Oak Ridge, TN 37830, USA.
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38
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Sutton JE, Roy S, Chowdhury AU, Wu L, Wanhala AK, De Silva N, Jansone-Popova S, Hay BP, Cheshire MC, Windus TL, Stack AG, Navrotsky A, Moyer BA, Doughty B, Bryantsev VS. Molecular Recognition at Mineral Interfaces: Implications for the Beneficiation of Rare Earth Ores. ACS Appl Mater Interfaces 2020; 12:16327-16341. [PMID: 32180402 DOI: 10.1021/acsami.9b22902] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Ce-bastnäsite is the single largest mineral source for light rare-earth elements. In view of the growing industrial importance of rare-earth minerals, it is critical to develop more efficient methods for separating the valuable rare-earth-containing minerals from the surrounding gangue. In this work, we employ a combination of periodic density functional theory (DFT) and molecular mechanics (MM) calculations together with the de novo molecular design program HostDesigner to identify bis-phosphinate ligands that preferentially bind to the (100) Ce-bastnäsite surface rather than the (104) calcite surface. DFT calculations for a simple phosphinate ligand were employed to qualitatively understand key behaviors involved in ligand-metal, ligand-solvent, and solvent-metal interactions. These insights were then used to guide the search for flexible, rigid, and semirigid hydrocarbon linkers to identify candidate bis-phosphinate ligands with the potential to bind preferentially to Ce-bastnäsite. Among the five most promising bis-phosphinate ligands suggested by theoretical studies, three ligands were synthesized and their adsorption characteristics to bastnäsite (100) interfaces were characterized using vibrational sum-frequency (vSFG) spectroscopy, attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, and isothermal titration calorimetry (ITC). The efficacy of the selective interfacial molecular binding was demonstrated by identifying a bis-phosphinate ligand capable of providing an overall higher surface coverage of alkyl groups relative to a monophosphinate ligand. The results highlight the interplay between adsorption binding strength and maximum surface coverage in determining ligand efficiency to render the mineral surface hydrophobic. DFT calculations further indicate that all tested ligands have higher affinity for Ce-bastnäsite than for calcite. This is consistent with the ITC data showing stronger adsorption enthalpy to bastnäsite than to calcite, making these ligands promising candidates for selective flotation of Ce-bastnäsite.
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Affiliation(s)
- Jonathan E Sutton
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6119, United States
| | - Santanu Roy
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6119, United States
| | - Azhad U Chowdhury
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6119, United States
| | - Lili Wu
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Anna K Wanhala
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6119, United States
| | - Nuwan De Silva
- Department of Chemistry and Ames Laboratory, Iowa State University, Ames, Iowa 50011-3111, United States
| | - Santa Jansone-Popova
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6119, United States
| | - Benjamin P Hay
- Supramolecular Design Institute, 127 Chestnut Hill Rd., Oak Ridge, Tennessee 37830-7185, United States
| | - Michael C Cheshire
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6119, United States
| | - Theresa L Windus
- Department of Chemistry and Ames Laboratory, Iowa State University, Ames, Iowa 50011-3111, United States
| | - Andrew G Stack
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6119, United States
| | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Bruce A Moyer
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6119, United States
| | - Benjamin Doughty
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6119, United States
| | - Vyacheslav S Bryantsev
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6119, United States
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39
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Guefrachi Y, Sharma G, Xu D, Kumar G, Vinter KP, Abdelrahman OA, Li X, Alhassan S, Dauenhauer PJ, Navrotsky A, Zhang W, Tsapatsis M. Steam‐Induced Coarsening of Single‐Unit‐Cell MFI Zeolite Nanosheets and Its Effect on External Surface Brønsted Acid Catalysis. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000395] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yasmine Guefrachi
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue SE Minneapolis MN 55455 USA
| | - Geetu Sharma
- Peter A. Rock Thermochemistry Laboratory NEAT-ORU University of California Davis Davis CA 95616 USA
| | - Dandan Xu
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue SE Minneapolis MN 55455 USA
| | - Gaurav Kumar
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue SE Minneapolis MN 55455 USA
| | - Katherine P. Vinter
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue SE Minneapolis MN 55455 USA
| | - Omar A. Abdelrahman
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue SE Minneapolis MN 55455 USA
| | - Xinyu Li
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue SE Minneapolis MN 55455 USA
| | - Saeed Alhassan
- Department of Chemical Engineering Khalifa University of Science and Technology Habshan Building, Sas Al Nakhl Campus Abu Dhabi United Arab Emirates
| | - Paul J. Dauenhauer
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue SE Minneapolis MN 55455 USA
| | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory NEAT-ORU University of California Davis Davis CA 95616 USA
| | - Wei Zhang
- Department of Diagnostic and Biological Sciences University of Minnesota 515 Delaware St SE Minneapolis MN 55455 USA
- Characterization Facility University of Minnesota 312 Church St Minneapolis MN 55455 USA
| | - Michael Tsapatsis
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue SE Minneapolis MN 55455 USA
- Department of Chemical and Biomolecular Engineering and Institute for NanoBioTechnology Johns Hopkins University 3400 N. Charles Street Baltimore MD 21218 USA
- Applied Physics Laboratory Johns Hopkins University 11100 Johns Hopkins Road Laurel MD 20723 USA
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40
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Guefrachi Y, Sharma G, Xu D, Kumar G, Vinter KP, Abdelrahman OA, Li X, Alhassan S, Dauenhauer PJ, Navrotsky A, Zhang W, Tsapatsis M. Steam‐Induced Coarsening of Single‐Unit‐Cell MFI Zeolite Nanosheets and Its Effect on External Surface Brønsted Acid Catalysis. Angew Chem Int Ed Engl 2020; 59:9579-9585. [DOI: 10.1002/anie.202000395] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Indexed: 11/06/2022]
Affiliation(s)
- Yasmine Guefrachi
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue SE Minneapolis MN 55455 USA
| | - Geetu Sharma
- Peter A. Rock Thermochemistry Laboratory NEAT-ORU University of California Davis Davis CA 95616 USA
| | - Dandan Xu
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue SE Minneapolis MN 55455 USA
| | - Gaurav Kumar
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue SE Minneapolis MN 55455 USA
| | - Katherine P. Vinter
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue SE Minneapolis MN 55455 USA
| | - Omar A. Abdelrahman
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue SE Minneapolis MN 55455 USA
| | - Xinyu Li
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue SE Minneapolis MN 55455 USA
| | - Saeed Alhassan
- Department of Chemical Engineering Khalifa University of Science and Technology Habshan Building, Sas Al Nakhl Campus Abu Dhabi United Arab Emirates
| | - Paul J. Dauenhauer
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue SE Minneapolis MN 55455 USA
| | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory NEAT-ORU University of California Davis Davis CA 95616 USA
| | - Wei Zhang
- Department of Diagnostic and Biological Sciences University of Minnesota 515 Delaware St SE Minneapolis MN 55455 USA
- Characterization Facility University of Minnesota 312 Church St Minneapolis MN 55455 USA
| | - Michael Tsapatsis
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue SE Minneapolis MN 55455 USA
- Department of Chemical and Biomolecular Engineering and Institute for NanoBioTechnology Johns Hopkins University 3400 N. Charles Street Baltimore MD 21218 USA
- Applied Physics Laboratory Johns Hopkins University 11100 Johns Hopkins Road Laurel MD 20723 USA
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41
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Rosen PF, Dickson MS, Calvin JJ, Ross NL, Friščić T, Navrotsky A, Woodfield BF. Thermodynamic Evidence of Structural Transformations in CO 2-Loaded Metal-Organic Framework Zn(MeIm) 2 from Heat Capacity Measurements. J Am Chem Soc 2020; 142:4833-4841. [PMID: 32070102 DOI: 10.1021/jacs.9b13883] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Metal-organic frameworks are a class of porous compounds with potential applications in molecular sieving, gas sequestration, and catalysis. One family of MOFs, zeolitic imidizolate frameworks (ZIFs), is of particular interest for carbon dioxide sequestration. We have previously reported the heat capacity of the sodalite topology of the zinc 2-methylimidazolate framework (ZIF-8), and in this Article we present the first low-temperature heat capacity measurements of ZIF-8 with various amounts of sorbed CO2. Molar heat capacities from 1.8 to 300 K are presented for samples containing up to 0.99 mol of CO2 per mol of ZIF-8. Samples with at least 0.56 mol of CO2 per mol of ZIF-8 display a large, broad anomaly from 70 to 220 K with a shoulder on the low-temperature side, suggesting sorption-induced structural transitions. We attribute the broad anomaly partially to a gate-opening transition, with the remainder resulting from CO2 rearrangement and/or lattice expansion. The measurements also reveal a subtle anomaly from 0 to 70 K in all samples that does not exist in the sorbate-free material, which likely reflects new vibrational modes resulting from sorbate/ZIF-8 interactions. These results provide the first thermodynamic evidence of structural transitions induced by CO2 sorption in the ZIF-8 framework.
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Affiliation(s)
- Peter F Rosen
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Matthew S Dickson
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Jason J Calvin
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Nancy L Ross
- Department of Geosciences, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Tomislav Friščić
- Department of Chemistry, McGill University, Montreal H3A 0B8, Canada
| | - Alexandra Navrotsky
- School of Molecular Sciences and Center for Materials of the Universe, Arizona State University, Tempe, Arizona 85281, United States
| | - Brian F Woodfield
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
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42
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Subramani T, Navrotsky A. Thermochemistry of cation disordered Li ion battery cathode materials, (M' = Nb and Ta, M'' = Mn and Fe). RSC Adv 2020; 10:6540-6546. [PMID: 35495992 PMCID: PMC9049730 DOI: 10.1039/c9ra09759g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 02/05/2020] [Indexed: 11/23/2022] Open
Abstract
High temperature oxide melt solution calorimetry studies on (M′ = Nb5+, M′′ = Mn3+ and Fe3+ and x = 0.20, 0.30 and 0.40) oxides and a new family of Ta containing Li excess disordered cathode materials, (M′ = Ta5+, M′′ = Fe3+ and x = 0.20, 0.30 and 0.40), synthesized by a rapid quenching method, are reported in this study. The enthalpies of formation determined from high temperature calorimetry studies reveal that the stability of compounds increases with the increasing Li content per formula unit. The reaction between more basic Li2O and acidic transition metal oxides results in the more negative enthalpies of formation for these compounds. The work reveals that the formation enthalpy term plays a more important role in the stabilization of such disordered Li ion materials at room temperature whereas configurational entropy along with lattice entropy (vibrational and magnetic) contributes to the stabilization at high temperature from which the samples are quenched. Enthalpies of formation from oxides (ΔHf,ox) of novel disordered Li1+xTaxFe1−2xO2 and reported (M′′ = Mn3+ and Fe3+).![]()
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Affiliation(s)
- Tamilarasan Subramani
- Peter A. Rock Thermochemistry Laboratory, NEAT ORU, University of California Davis CA 95616 USA
| | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory, NEAT ORU, University of California Davis CA 95616 USA.,School of Molecular Sciences, Center for Materials of the Universe, Arizona State University Tempe AZ 85287 USA
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43
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Abstract
The recent finding of local weberite-like ordered domains in disordered and radiation damaged pyrochlore oxides has sparked interest in studying the structure, stability, and order-disorder in compounds that form in the weberite structure. In order to understand the relationships among the energetics, structure, and disordering, weberites of the formula RE3TaO7 (RE = La, Nd, Sm-Yb) were synthesized by conventional solid-state techniques. High temperature oxide melt solution calorimetry was used to determine their enthalpies of formation. Rietveld refinement of PXRD patterns shows that the La compound forms in the weberite La3NbO7 (Cmcm) structure; the Nd compound has both Y3TaO7 (C2221)-type and La3NbO7-type polymorphs; the Sm-Ho compounds crystallize in the weberite Y3TaO7 (C2221) structure; and the Ho-Yb compounds adopt the defect fluorite (Fm3̅m) disordered structure. Depending on the reaction temperature, Ho3TaO7 crystallizes in ordered Y3TaO7 (low temperature) or disordered defect fluorite (high temperature) structures. The formation enthalpy of weberites becomes more exothermic with increasing rare earth ionic radius, implying an increase in stability, i.e., La3TaO7 is most stable and Yb3TaO7 is least stable with respect to the component oxides. The calorimetric data also show that ordered Ho3TaO7 (Y3TaO7 structure) is energetically more stable by 9.2 ± 1.1 kJ/mol than disordered Ho3TaO7 (defect fluorite structure).
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Affiliation(s)
- Tamilarasan Subramani
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU , University of California Davis , Davis , California 95616 , United States
| | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU , University of California Davis , Davis , California 95616 , United States
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44
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Bolandparvaz A, Harriman R, Alvarez K, Lilova K, Zang Z, Lam A, Edmiston E, Navrotsky A, Vapniarsky N, Van De Water J, Lewis JS. Towards a nanoparticle-based prophylactic for maternal autoantibody-related autism. Nanomedicine 2019; 21:102067. [PMID: 31349087 PMCID: PMC7197945 DOI: 10.1016/j.nano.2019.102067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 06/21/2019] [Accepted: 07/12/2019] [Indexed: 12/17/2022]
Abstract
Recently, the causative agents of Maternal Autoantibody-Related (MAR) autism, pathological autoantibodies and their epitopic targets (e.g. lactate dehydrogenase B [LDH B] peptide), have been identified. Herein, we report on the development of Systems for Nanoparticle-based Autoantibody Reception and Entrapment (SNAREs), which we hypothesized could scavenge disease-propagating MAR autoantibodies from the maternal blood. To demonstrate this functionality, we synthesized 15 nm dextran iron oxide nanoparticles surface-modified with citric acid, methoxy PEG(10 kDa) amine, and LDH B peptide (33.8 μg peptide/cm2). In vitro, we demonstrated significantly lower macrophage uptake for SNAREs compared to control NPs. The hallmark result of this study was the efficacy of the SNAREs to remove 90% of LDH B autoantibody from patient-derived serum. Further, in vitro cytotoxicity testing and a maximal tolerated dose study in mice demonstrated the safety of the SNARE formulation. This work establishes the feasibility of SNAREs as the first-ever prophylactic against MAR autism.
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Affiliation(s)
- Amir Bolandparvaz
- University of California, Davis, Department of Biomedical Engineering, Davis, CA, USA
| | - Rian Harriman
- University of California, Davis, Department of Biomedical Engineering, Davis, CA, USA
| | - Kenneth Alvarez
- University of California, Davis, Department of Biomedical Engineering, Davis, CA, USA
| | - Kristina Lilova
- University of California, Davis, Peter A. Rock Thermochemistry Laboratory and NEAT, Davis, CA, USA
| | - Zexi Zang
- University of California, Davis, Department of Biomedical Engineering, Davis, CA, USA
| | - Andy Lam
- University of California, Davis, Peter A. Rock Thermochemistry Laboratory and NEAT, Davis, CA, USA
| | - Elizabeth Edmiston
- University of California, Davis, Department of Internal Medicine, Division of Rheumatology, Allergy, and Clinical Immunology, Davis, CA, USA
| | - Alexandra Navrotsky
- University of California, Davis, Peter A. Rock Thermochemistry Laboratory and NEAT, Davis, CA, USA
| | - Natalia Vapniarsky
- University of California, Davis, Department of Pathology Microbiology and Immunology, Davis, CA, USA
| | - Judy Van De Water
- University of California, Davis, Department of Internal Medicine, Division of Rheumatology, Allergy, and Clinical Immunology, Davis, CA, USA; University of California, Davis, M.I.N.D. (Medical Investigation of Neurodevelopmental Disorders), Davis, CA, USA
| | - Jamal S Lewis
- University of California, Davis, Department of Biomedical Engineering, Davis, CA, USA.
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45
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Wang B, Novendra N, Navrotsky A. Energetics, Structures, and Phase Transitions of Cubic and Orthorhombic Cesium Lead Iodide (CsPbI3) Polymorphs. J Am Chem Soc 2019; 141:14501-14504. [DOI: 10.1021/jacs.9b05924] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Bin Wang
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California Davis, Davis, California 95616, United States
| | - Novendra Novendra
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California Davis, Davis, California 95616, United States
| | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California Davis, Davis, California 95616, United States
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46
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Ushakov SV, Navrotsky A, Hong QJ, van de Walle A. Carbides and Nitrides of Zirconium and Hafnium. Materials (Basel) 2019; 12:ma12172728. [PMID: 31454900 PMCID: PMC6747801 DOI: 10.3390/ma12172728] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 08/21/2019] [Accepted: 08/22/2019] [Indexed: 01/13/2023]
Abstract
Among transition metal carbides and nitrides, zirconium, and hafnium compounds are the most stable and have the highest melting temperatures. Here we review published data on phases and phase equilibria in Hf-Zr-C-N-O system, from experiment and ab initio computations with focus on rocksalt Zr and Hf carbides and nitrides, their solid solutions and oxygen solubility limits. The systematic experimental studies on phase equilibria and thermodynamics were performed mainly 40–60 years ago, mostly for binary systems of Zr and Hf with C and N. Since then, synthesis of several oxynitrides was reported in the fluorite-derivative type of structures, of orthorhombic and cubic higher nitrides Zr3N4 and Hf3N4. An ever-increasing stream of data is provided by ab initio computations, and one of the testable predictions is that the rocksalt HfC0.75N0.22 phase would have the highest known melting temperature. Experimental data on melting temperatures of hafnium carbonitrides are absent, but minimum in heat capacity and maximum in hardness were reported for Hf(C,N) solid solutions. New methods, such as electrical pulse heating and laser melting, can fill the gaps in experimental data and validate ab initio predictions.
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Affiliation(s)
- Sergey V Ushakov
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California at Davis, Davis, CA 95616, USA.
| | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California at Davis, Davis, CA 95616, USA.
| | - Qi-Jun Hong
- School of Engineering, Brown University, Providence, RI 02912, USA.
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47
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Linares N, De Oliveira Jardim E, Sharma G, Serrano E, Navrotsky A, García-Martínez J. Thermochemistry of Surfactant-Templating of USY Zeolite. Chemistry 2019; 25:10045-10048. [PMID: 31236993 DOI: 10.1002/chem.201901507] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 05/17/2019] [Indexed: 11/09/2022]
Abstract
With the aim of understanding the thermochemistry of the introduction of mesoporosity in zeolites by using surfactants, high temperature oxide melt solution calorimetry was used to determine the change in the enthalpy of formation of USY zeolite before and after the introduction of mesoporosity. Our results confirm that this process only slightly destabilizes the zeolite by the additional surface area. However, this can be overcome by the stabilizing effect of the interactions between the surfactant and the zeolite framework.
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Affiliation(s)
- Noemi Linares
- Laboratorio de Nanotecnología Molecular, Departamento de Química Inorgánica, Universidad de Alicante, Ctra. San Vicente-Alicante s/n, E-03690, Alicante, Spain
| | - Erika De Oliveira Jardim
- Laboratorio de Nanotecnología Molecular, Departamento de Química Inorgánica, Universidad de Alicante, Ctra. San Vicente-Alicante s/n, E-03690, Alicante, Spain
| | - Geetu Sharma
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU Department, University of California Davis Institution, Davis, CA, 95616, USA
| | - Elena Serrano
- Laboratorio de Nanotecnología Molecular, Departamento de Química Inorgánica, Universidad de Alicante, Ctra. San Vicente-Alicante s/n, E-03690, Alicante, Spain
| | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU Department, University of California Davis Institution, Davis, CA, 95616, USA
| | - Javier García-Martínez
- Laboratorio de Nanotecnología Molecular, Departamento de Química Inorgánica, Universidad de Alicante, Ctra. San Vicente-Alicante s/n, E-03690, Alicante, Spain
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48
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Linares N, De Oliveira Jardim E, Sharma G, Serrano E, Navrotsky A, García‐Martínez J. Cover Feature: Thermochemistry of Surfactant‐Templating of USY Zeolite (Chem. Eur. J. 43/2019). Chemistry 2019. [DOI: 10.1002/chem.201902535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Noemi Linares
- Laboratorio de Nanotecnología MolecularDepartamento de Química InorgánicaUniversidad de Alicante Ctra. San Vicente-Alicante s/n E-03690 Alicante Spain
| | - Erika De Oliveira Jardim
- Laboratorio de Nanotecnología MolecularDepartamento de Química InorgánicaUniversidad de Alicante Ctra. San Vicente-Alicante s/n E-03690 Alicante Spain
| | - Geetu Sharma
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU DepartmentUniversity of California Davis Institution Davis CA 95616 USA
| | - Elena Serrano
- Laboratorio de Nanotecnología MolecularDepartamento de Química InorgánicaUniversidad de Alicante Ctra. San Vicente-Alicante s/n E-03690 Alicante Spain
| | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU DepartmentUniversity of California Davis Institution Davis CA 95616 USA
| | - Javier García‐Martínez
- Laboratorio de Nanotecnología MolecularDepartamento de Química InorgánicaUniversidad de Alicante Ctra. San Vicente-Alicante s/n E-03690 Alicante Spain
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49
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Mera G, Kroll P, Ponomarev I, Chen J, Morita K, Liesegang M, Ionescu E, Navrotsky A. Metal-catalyst-free access to multiwalled carbon nanotubes/silica nanocomposites (MWCNT/SiO 2) from a single-source precursor. Dalton Trans 2019; 48:11018-11033. [PMID: 31232398 DOI: 10.1039/c9dt01783f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The present study introduces a facile single-source precursor preparative access to bamboo-like multiwalled carbon nanotubes (MWCNTs) highly dispersed within a mesoporous silica-rich matrix. The metal-free single-source precursor was synthesized via a one-pot sol-gel process using tetramethyl orthosilicate (TMOS) and 4,4'-dihydroxybiphenyl (DHBP) and converted subsequently via pyrolysis under an argon atmosphere into MWCNT/silica nanocomposites. The in situ segregation of the highly defective bamboo-like MWCNTs was carefully investigated and has been shown to occur within the mesopores of the silica-rich matrix at relatively low temperatures and without the use of a metal catalyst. The experimental results have been supported by extensive computational simulations, which correlate the molecular architecture of the single-source precursor with the structural features of the carbon phase segregating from the silica matrix. Furthermore, the role of hydrogen in the stability of the prepared nanocomposites as well as in the high-temperature evolution and morphology of the segregated MWCNTs has been discussed based on vibrational spectroscopy, calorimetric studies and empirical potential calculations. The results obtained within the present study may allow for designing highly-defined nanocarbon-containing composites with tailored structural features and property profiles.
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Affiliation(s)
- Gabriela Mera
- Technische Universität Darmstadt, Institut für Materialwissenschaft, Otto-Berndt-Str. 3, D-64287 Darmstadt, Germany.
| | - Peter Kroll
- The University of Texas at Arlington, Department of Chemistry and Biochemistry, 700 Planetarium Place, Arlington, TX 76019, USA
| | - Ilia Ponomarev
- The University of Texas at Arlington, Department of Chemistry and Biochemistry, 700 Planetarium Place, Arlington, TX 76019, USA
| | - Jiewei Chen
- National Institute for Materials Science, Research Center for Functional Materials, Tsukuba, Ibaraki 305-0047, Japan
| | - Koji Morita
- University of California at Davis, Peter A. Rock Thermochemistry Laboratory and NEAT ORU, Davis, CA 95616, USA
| | - Moritz Liesegang
- Technische Universität Darmstadt, Institut für Materialwissenschaft, Otto-Berndt-Str. 3, D-64287 Darmstadt, Germany.
| | - Emanuel Ionescu
- Technische Universität Darmstadt, Institut für Materialwissenschaft, Otto-Berndt-Str. 3, D-64287 Darmstadt, Germany.
| | - Alexandra Navrotsky
- National Institute for Materials Science, Research Center for Functional Materials, Tsukuba, Ibaraki 305-0047, Japan
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50
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Huskić I, Novendra N, Lim DW, Topić F, Titi HM, Pekov IV, Krivovichev SV, Navrotsky A, Kitagawa H, Friščić T. Functionality in metal-organic framework minerals: proton conductivity, stability and potential for polymorphism. Chem Sci 2019; 10:4923-4929. [PMID: 31160963 PMCID: PMC6510315 DOI: 10.1039/c8sc05088k] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 03/31/2019] [Indexed: 01/10/2023] Open
Abstract
Rare metal-organic framework (MOF) minerals stepanovite and zhemchuzhnikovite can exhibit properties comparable to known oxalate MOF proton conductors, including high proton conductivity over a range of relative humidities at 25 °C, and retention of the framework structure upon thermal dehydration. They also have high thermodynamic stability, with a pronounced stabilizing effect of substituting aluminium for iron, illustrating a simple design to access stable, highly proton-conductive MOFs without using complex organic ligands.
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Affiliation(s)
- Igor Huskić
- Department of Chemistry , McGill University , Montreal , Canada .
| | - Novendra Novendra
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU , University of California Davis , Davis , CA , USA .
| | - Dae-Woon Lim
- Division of Chemistry , Graduate School of Science , Kyoto University , Kitashirakawa-Oiwakecho, Sakyo-ku , Kyoto , 606-8502 Japan .
| | - Filip Topić
- Department of Chemistry , McGill University , Montreal , Canada .
| | - Hatem M Titi
- Department of Chemistry , McGill University , Montreal , Canada .
| | - Igor V Pekov
- Kola Science Centre , Russian Academy of Sciences , Apatity and Department of Crystallography , Saint Petersburg State University , Saint Petersburg , Russia
| | | | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU , University of California Davis , Davis , CA , USA .
| | - Hiroshi Kitagawa
- Division of Chemistry , Graduate School of Science , Kyoto University , Kitashirakawa-Oiwakecho, Sakyo-ku , Kyoto , 606-8502 Japan .
| | - Tomislav Friščić
- Department of Chemistry , McGill University , Montreal , Canada .
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