1
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Saslow SA, Cordova EA, Escobedo NM, Qafoku O, Bowden ME, Resch CT, Lahiri N, Nienhuis ET, Boglaienko D, Levitskaia TG, Meyers P, Hager JR, Emerson HP, Pearce CI, Freedman VL. Accumulation mechanisms for contaminants on weak-base hybrid ion exchange resins. J Hazard Mater 2023; 459:132165. [PMID: 37531768 DOI: 10.1016/j.jhazmat.2023.132165] [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: 04/24/2023] [Revised: 07/18/2023] [Accepted: 07/25/2023] [Indexed: 08/04/2023]
Abstract
Mechanism of hexavalent chromium removal (Cr(VI) as CrO42-) by the weak-base ion exchange (IX) resin ResinTech® SIR-700-HP (SIR-700) from simulated groundwater is assessed in the presence of radioactive contaminants iodine-129 (as IO3-), uranium (U as uranyl UO22+), and technetium-99 (as TcO4-), and common environmental anions sulfate (SO42-) and chloride (Cl-). Batch tests using the acid sulfate form of SIR-700 demonstrated Cr(VI) and U(VI) removal exceeded 97%, except in the presence of high SO42- concentrations (536 mg/L) where Cr(VI) and U(VI) removal decreased to ≥ 80%. However, Cr(VI) removal notably improved with co-mingled U(VI) that complexes with SO42- at the protonated amine sites. These U-SO42- complexes are integral to U(VI) removal, as confirmed by the decrease in U(VI) removal (<40%) when the acid chloride form of SIR-700 was used instead. Solid phase characterization revealed that CrO42- is removed by IX with SO42- complexes and/or reduced to amorphous Cr(III)(OH)3 at secondary alcohol sites. Tc(VII)O4- and I(V)O3- also undergo chemical reduction, following a similar removal mechanism. Oxyanion removal preference is determined by the anion reduction potential (CrO42->TcO4->IO3-), geometry, and charge density. For these reasons, 39% and 69% of TcO4- and 17% and 39% of IO3- are removed in the presence and absence of Cr(VI), respectively.
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Affiliation(s)
- Sarah A Saslow
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland 99354, WA, USA.
| | - Elsa A Cordova
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland 99354, WA, USA
| | - Nancy M Escobedo
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland 99354, WA, USA
| | - Odeta Qafoku
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland 99354, WA, USA
| | - Mark E Bowden
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland 99354, WA, USA
| | - Charles T Resch
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland 99354, WA, USA
| | - Nabajit Lahiri
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland 99354, WA, USA
| | - Emily T Nienhuis
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland 99354, WA, USA
| | - Daria Boglaienko
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland 99354, WA, USA
| | - Tatiana G Levitskaia
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland 99354, WA, USA.
| | - Peter Meyers
- ResinTech, Inc., 160 Copper Road, West Berlin, 08091 NJ, USA
| | - Jacqueline R Hager
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland 99354, WA, USA
| | - Hilary P Emerson
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland 99354, WA, USA
| | - Carolyn I Pearce
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland 99354, WA, USA.
| | - Vicky L Freedman
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland 99354, WA, USA
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2
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Yang Z, Wang L, Dhas JA, Engelhard MH, Bowden ME, Liu W, Zhu Z, Wang C, Chambers SA, Sushko PV, Du Y. Guided anisotropic oxygen transport in vacancy ordered oxides. Nat Commun 2023; 14:6068. [PMID: 37770428 PMCID: PMC10539514 DOI: 10.1038/s41467-023-40746-4] [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: 10/26/2022] [Accepted: 08/07/2023] [Indexed: 09/30/2023] Open
Abstract
Anisotropic and efficient transport of ions under external stimuli governs the operation and failure mechanisms of energy-conversion systems and microelectronics devices. However, fundamental understanding of ion hopping processes is impeded by the lack of atomically precise materials and probes that allow for the monitoring and control at the appropriate time- and length- scales. In this work, using in-situ transmission electron microscopy, we directly show that oxygen ion migration in vacancy ordered, semiconducting SrFeO2.5 epitaxial thin films can be guided to proceed through two distinctly different diffusion pathways, each resulting in different polymorphs of SrFeO2.75 with different ground electronic properties before reaching a fully oxidized, metallic SrFeO3 phase. The diffusion steps and reaction intermediates are revealed by means of ab-initio calculations. The principles of controlling oxygen diffusion pathways and reaction intermediates demonstrated here may advance the rational design of structurally ordered oxides for tailored applications and provide insights for developing devices with multiple states of regulation.
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Affiliation(s)
- Zhenzhong Yang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
- Key Laboratory of Polar Materials and Devices (MOE), Department of Electronics, East China Normal University, Shanghai, 200241, P. R. China
| | - Le Wang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Jeffrey A Dhas
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, OR, 97331, USA
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Mark H Engelhard
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Mark E Bowden
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Wen Liu
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430074, China
| | - Zihua Zhu
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Chongmin Wang
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Scott A Chambers
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Peter V Sushko
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.
| | - Yingge Du
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.
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3
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Patrick EA, Bowden ME, Erickson JD, Bullock RM, Tran BL. Single-Crystal to Single-Crystal Transformations: Stepwise CO2 Insertions into Bridging Hydrides of [(NHC)CuH]2 Complexes. Angew Chem Int Ed Engl 2023:e202304648. [PMID: 37221959 DOI: 10.1002/anie.202304648] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/20/2023] [Accepted: 05/22/2023] [Indexed: 05/25/2023]
Abstract
Mechanistic studies of substrate insertion into dimeric [(NHC)CuH]2 (NHC = N-heterocyclic carbene) complexes with two bridging hydrides have been shown to require dimer dissociation to generate transient, highly reactive (NHC)Cu-H monomers in solution. Using single-crystal to single-crystal (SC-SC) transformations, we discovered a new pathway that undergoes stepwise insertion of CO2 into [(NHC)CuH]2 without complete dissociation of the dimer. The first CO2 insertion into dimeric [(IPr*OMe)CuH]2 produced a dicopper formate-hydride [(IPr*OMe)Cu]2(u-1,3-O2CH)(u-H). A second CO2 insertion produced a dicopper bis-formate [(IPr*OMe)Cu]2(u-1,3-O2CH)(u-1,1-O2CH), containing two different bonding modes of the bridging formate. These dicopper formate complexes are inaccessible from solution reactions since the dicopper core ruptures to monomeric complexes in the presence of polar and nonpolar solvent.
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Affiliation(s)
- Evan A Patrick
- Pacific Northwest National Laboratory, Institute for Integrated Catalysis, UNITED STATES
| | - Mark E Bowden
- Pacific Northwest National Laboratory, Institute for Integrated Catalysis, UNITED STATES
| | - Jeremy D Erickson
- Pacific Northwest National Laboratory, Institute for Integrated Catalysis, UNITED STATES
| | - R Morris Bullock
- Pacific Northwest National Laboratory, Institute for Integrated Catalysis, UNITED STATES
| | - Ba L Tran
- Pacific Northwest National Laboratory, Physical Sciences, 902 Battelle Blvd, 99354, Richland, UNITED STATES
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4
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Jin B, Chen Y, Tao J, Lachowski KJ, Bowden ME, Zhang Z, Pozzo LD, Washton NM, Mueller KT, DeYoreo JJ. Multi-Step Nucleation of A Crystalline Silicate Framework via A Structurally Precise Prenucleation Cluster. Angew Chem Int Ed Engl 2023:e202303770. [PMID: 37145989 DOI: 10.1002/anie.202303770] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 03/15/2023] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 05/07/2023]
Abstract
Hierarchical nucleation pathways are ubiquitous in the synthesis of minerals and materials. In the case of open framework lattices such as zeolites and metal-organic frameworks, pre-organized multi-ion "secondary building units" (SBUs) have long been proposed as fundamental building blocks of the forming crystals. However, detailing the progress of multi-step reaction mechanisms in going from monomeric species to stable crystals and defining the structures of the intermediate SBUs remains an unmet challenge. Combining in situ nuclear magnetic resonance, small-angle X-ray scattering, and atomic force microscopy, we show that crystallization of the framework silicate, cyclosilicate hydrate, occurs through an assembly of cubic octameric Q38 polyanions formed through cross-linking and polymerization of smaller silicate monomers and other oligomers. These Q38 are stabilized by hydrogen bonds with surrounding H2O and tetramethylammonium ions (TMA+). When Q38 levels reach a threshold of ~32% of the total silicate species nucleation within these clathrates occurs. Further growth proceeds through the incorporation of [(TMA)x(Q38)·nH2O](x-8) clathrate complexes into step edges on the crystals. These findings provide a clear picture of the multi-step nucleation process by which SBUs build a framework silicate lattice with implications for the synthesis of both functional materials and natural minerals.
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Affiliation(s)
- Biao Jin
- Pacific Northwest National Laboratory, physical science division, UNITED STATES
| | - Ying Chen
- Pacific Northwest National Laboratory, physical science division, UNITED STATES
| | - Jinhui Tao
- Pacific Northwest National Laboratory, physical science division, UNITED STATES
| | - Kacper J Lachowski
- University of Washington Department of Materials Science and Engineering, Molecular Engineering and Sciences Institute, UNITED STATES
| | - Mark E Bowden
- Pacific Northwest National Laboratory, physical science division, UNITED STATES
| | - Zihao Zhang
- PNNL: Pacific Northwest National Laboratory, physical science division, UNITED STATES
| | - Lilo D Pozzo
- University of Washington Department of Materials Science and Engineering, Molecular Engineering and Sciences Institute, UNITED STATES
| | - Nancy M Washton
- Pacific Northwest National Laboratory, physical science division, UNITED STATES
| | - Karl T Mueller
- Pacific Northwest National Laboratory, physical science division, UNITED STATES
| | - James J DeYoreo
- PNNL: Pacific Northwest National Laboratory, Physical Sciences, Battelle Blvd, 99352, Richland, UNITED STATES
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5
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Adiga P, Wang L, Wong C, Matthews BE, Bowden ME, Spurgeon SR, Sterbinsky GE, Blum M, Choi MJ, Tao J, Kaspar TC, Chambers SA, Stoerzinger KA, Du Y. Correlation between oxygen evolution reaction activity and surface compositional evolution in epitaxial La 0.5Sr 0.5Ni 1-xFe xO 3-δ thin films. Nanoscale 2023; 15:1119-1127. [PMID: 36594352 DOI: 10.1039/d2nr05373j] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Water electrolysis can use renewable electricity to produce green hydrogen, a portable fuel and sustainable chemical precursor. Improving electrolyzer efficiency hinges on the activity of the oxygen evolution reaction (OER) catalyst. Earth-abundant, ABO3-type perovskite oxides offer great compositional, structural, and electronic tunability, with previous studies showing compositional substitution can increase the OER activity drastically. However, the relationship between the tailored bulk composition and that of the surface, where OER occurs, remains unclear. Here, we study the effects of electrochemical cycling on the OER activity of La0.5Sr0.5Ni1-xFexO3-δ (x = 0-0.5) epitaxial films grown by oxide molecular beam epitaxy as a model Sr-containing perovskite oxide. Electrochemical testing and surface-sensitive spectroscopic analyses show Ni segregation, which is affected by electrochemical history, along with surface amorphization, coupled with changes in OER activity. Our findings highlight the importance of surface composition and electrochemical cycling conditions in understanding OER performance, suggesting common motifs of the active surface with high surface area systems.
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Affiliation(s)
- Prajwal Adiga
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon, 97331, USA.
| | - Le Wang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, USA.
| | - Cindy Wong
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon, 97331, USA.
| | - Bethany E Matthews
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - Mark E Bowden
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - Steven R Spurgeon
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
| | - George E Sterbinsky
- Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Monika Blum
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Min-Ju Choi
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, USA.
| | - Jinhui Tao
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, USA.
| | - Tiffany C Kaspar
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, USA.
| | - Scott A Chambers
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, USA.
| | - Kelsey A Stoerzinger
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon, 97331, USA.
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, USA.
| | - Yingge Du
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, USA.
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6
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Xu M, Lopez-Ruiz JA, Riedel NW, Weber R, Bowden ME, Kovarik L, Jiang C, Hu J, Dagle RA. Promotional role of NiCu alloy in catalytic performance and carbon properties for CO2-free H2 production from thermocatalytic decomposition of methane. Catal Sci Technol 2023. [DOI: 10.1039/d2cy01782b] [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: 03/08/2023]
Abstract
Thermocatalytic decomposition (TCD) of methane produces CO2-free hydrogen and valuable co-product, solid carbon. In this study, a series of Ni-Cu/CNT catalysts, prepared with varying Ni/Cu metal ratios and synthesis methods,...
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7
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Yoon H, Truttmann TK, Liu F, Matthews BE, Choo S, Su Q, Saraswat V, Manzo S, Arnold MS, Bowden ME, Kawasaki JK, Koester SJ, Spurgeon SR, Chambers SA, Jalan B. Freestanding epitaxial SrTiO 3 nanomembranes via remote epitaxy using hybrid molecular beam epitaxy. Sci Adv 2022; 8:eadd5328. [PMID: 36563139 PMCID: PMC9788776 DOI: 10.1126/sciadv.add5328] [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] [Indexed: 05/14/2023]
Abstract
The epitaxial growth of functional oxides using a substrate with a graphene layer is a highly desirable method for improving structural quality and obtaining freestanding epitaxial nanomembranes for scientific study, applications, and economical reuse of substrates. However, the aggressive oxidizing conditions typically used in growing epitaxial oxides can damage graphene. Here, we demonstrate the successful use of hybrid molecular beam epitaxy for SrTiO3 growth that does not require an independent oxygen source, thus avoiding graphene damage. This approach produces epitaxial films with self-regulating cation stoichiometry. Furthermore, the film (46-nm-thick SrTiO3) can be exfoliated and transferred to foreign substrates. These results open the door to future studies of previously unattainable freestanding oxide nanomembranes grown in an adsorption-controlled manner by hybrid molecular beam epitaxy. This approach has potentially important implications for the commercial application of perovskite oxides in flexible electronics and as a dielectric in van der Waals thin-film electronics.
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Affiliation(s)
- Hyojin Yoon
- Department of Chemical Engineering and Materials Science, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA
| | - Tristan K. Truttmann
- Department of Chemical Engineering and Materials Science, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA
| | - Fengdeng Liu
- Department of Chemical Engineering and Materials Science, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA
| | - Bethany E. Matthews
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland,, WA 99352, USA
| | - Sooho Choo
- Department of Chemical Engineering and Materials Science, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA
| | - Qun Su
- Department of Electrical and Computer Engineering, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA
| | - Vivek Saraswat
- Department of Materials Science and Engineering, University of Wisconsin–Madison, Madison, WI 53706, USA
| | - Sebastian Manzo
- Department of Materials Science and Engineering, University of Wisconsin–Madison, Madison, WI 53706, USA
| | - Michael S. Arnold
- Department of Materials Science and Engineering, University of Wisconsin–Madison, Madison, WI 53706, USA
| | - Mark E. Bowden
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Jason K. Kawasaki
- Department of Materials Science and Engineering, University of Wisconsin–Madison, Madison, WI 53706, USA
| | - Steven J. Koester
- Department of Electrical and Computer Engineering, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA
| | - Steven R. Spurgeon
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland,, WA 99352, USA
- Department of Physics, University of Washington, Seattle, WA 98195, USA
| | - Scott A. Chambers
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Bharat Jalan
- Department of Chemical Engineering and Materials Science, University of Minnesota, Twin Cities, Minneapolis, MN 55455, USA
- Corresponding author.
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8
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Allendorf MD, Stavila V, Snider JL, Witman M, Bowden ME, Brooks K, Tran BL, Autrey T. Challenges to developing materials for the transport and storage of hydrogen. Nat Chem 2022; 14:1214-1223. [DOI: 10.1038/s41557-022-01056-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 09/02/2022] [Indexed: 11/09/2022]
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9
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Reynolds JE, Acosta AC, Kang S, Li S, Lipton AS, Bowden ME, Myllenbeck NR, Schneemann A, Leick N, Bhandarkar A, Reed C, Horton RD, Gennett T, Wood BC, Allendorf MD, Stavila V. Teaching an Old Reagent New Tricks: Synthesis, Unusual Reactivity, and Solution Dynamics of Borohydride Grignard Compounds. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00284] [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: 11/28/2022]
Affiliation(s)
- Joseph E. Reynolds
- Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550, United States
| | - Austin C. Acosta
- Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550, United States
| | - ShinYoung Kang
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Sichi Li
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Andrew S. Lipton
- Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, Washington 99354, United States
| | - Mark E. Bowden
- Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, Washington 99354, United States
| | - Nicholas R. Myllenbeck
- Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550, United States
| | - Andreas Schneemann
- Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550, United States
- Department of Inorganic Chemistry I, Technische Universität Dresden, Bergstraße 66, 01069 Dresden, Germany
| | - Noemi Leick
- National Renewable Energy Laboratory, 15013 Denver W Parkway, Golden, Colorado 80401, United States
| | - Austin Bhandarkar
- Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550, United States
| | - Christopher Reed
- Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550, United States
| | - Robert D. Horton
- Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550, United States
| | - Thomas Gennett
- National Renewable Energy Laboratory, 15013 Denver W Parkway, Golden, Colorado 80401, United States
| | - Brandon C. Wood
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States
| | - Mark D. Allendorf
- Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550, United States
| | - Vitalie Stavila
- Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550, United States
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10
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Wang L, Yang Z, Samarakoon WS, Zhou Y, Bowden ME, Zhou H, Tao J, Zhu Z, Lahiri N, Droubay TC, Lebens-Higgins Z, Yin X, Tang CS, Feng Z, Piper LFJ, Wee ATS, Chambers SA, Du Y. Spontaneous Lithiation of Binary Oxides during Epitaxial Growth on LiCoO 2. Nano Lett 2022; 22:5530-5537. [PMID: 35771509 DOI: 10.1021/acs.nanolett.2c01701] [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] [Indexed: 06/15/2023]
Abstract
Epitaxial growth is a powerful tool for synthesizing heterostructures and integrating multiple functionalities. However, interfacial mixing can readily occur and significantly modify the properties of layered structures, particularly for those containing energy storage materials with smaller cations. Here, we show a two-step sequence involving the growth of an epitaxial LiCoO2 cathode layer followed by the deposition of a binary transition metal oxide. Orientation-controlled epitaxial synthesis of the model solid-state-electrolyte Li2WO4 and anode material Li4Ti5O12 occurs as WO3 and TiO2 nucleate and react with Li ions from the underlying cathode. We demonstrate that this lithiation-assisted epitaxy approach can be used for energy materials discovery and exploring different combinations of epitaxial interfaces that can serve as well-defined model systems for mechanistic studies of energy storage and conversion processes.
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Affiliation(s)
- Le Wang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Zhenzhong Yang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
- Key Laboratory of Polar Materials and Devices (MOE) and Department of Electronics, East China Normal University, Shanghai 200062, China
| | - Widitha S Samarakoon
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
| | - Yadong Zhou
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, 500 Dongchuan Road, Minhang District, Shanghai, 200241, China
| | - Mark E Bowden
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Hua Zhou
- Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Jinhui Tao
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Zihua Zhu
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Nabajit Lahiri
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Timothy C Droubay
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Zachary Lebens-Higgins
- Physics, Applied Physics, and Astronomy, Binghamton University, Binghamton, New York 13902, United States
| | - Xinmao Yin
- Physics Department, Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai 200444, China
| | - Chi Sin Tang
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Singapore, 138634 Singapore
- Singapore Synchrotron Light Source (SSLS), National University of Singapore, 5 Research Link, Singapore, 117603 Singapore
| | - Zhenxing Feng
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
| | - Louis F J Piper
- Physics, Applied Physics, and Astronomy, Binghamton University, Binghamton, New York 13902, United States
- WMG, The University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Andrew T S Wee
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117551, Singapore
| | - Scott A Chambers
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Yingge Du
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
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11
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Wang G, Kim DS, Olszta MJ, Bowden ME, Schreiber DK, Saslow SA, Um W, Riley BJ, Wang J, Kruger AA. Metallic technetium sequestration in nickel core/shell microstructure during Fe(OH) 2 transformation with Ni doping. J Hazard Mater 2022; 425:127779. [PMID: 34823954 DOI: 10.1016/j.jhazmat.2021.127779] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 10/16/2021] [Accepted: 11/10/2021] [Indexed: 06/13/2023]
Abstract
This study investigates the impacts of Ni doping on technetium-99 (Tc) sequestration in aqueous solutions through transformation of Fe(OH)2(s) to iron spinel (magnetite) under alkaline conditions. Extensive solid characterization was performed for the mineral phases produced, as well as the Tc/Ni speciation and distribution within these phases. X-ray diffraction results show that iron spinel was the dominant mineral product without detectable Ni incorporation. The doped Ni ions mainly precipitated as fine Fe/Ni oxide/hydroxide particles, including strongly reduced nanometer-sized spheroidal Ni-rich and metallic Ni phases. High-resolution analytical scanning transmission electron microscopy using energy dispersive X-ray spectroscopy and electron energy loss spectroscopy on the produced solid samples (focused ion beam-prepared specimens) revealed three Tc distribution domains dominated by nanocrystals and, especially, a Tc-rich metallic phase. Instances of metallic Tc were specifically found in spheroidal, Ni-rich and metallic nanoparticles exhibiting a core/shell microstructure that suggests strong reduction and sequential precipitation of Ni-Tc-Ni. Mass balance analysis showed nearly 100% Tc removal from the 4.8 × 10-4 M Tc solutions. The finding of the metallic Tc encapsulation indicates that Tc sequestration through Ni-doped Fe(OH)2(s)-to-iron spinel transformation process likely provides an alternative treatment pathway for Tc removal and could be combined into further waste treatment approaches.
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Affiliation(s)
- Guohui Wang
- Pacific Northwest National Laboratory, Richland, WA 99354, United States.
| | - Dong-Sang Kim
- Pacific Northwest National Laboratory, Richland, WA 99354, United States
| | - Matthew J Olszta
- Pacific Northwest National Laboratory, Richland, WA 99354, United States
| | - Mark E Bowden
- Pacific Northwest National Laboratory, Richland, WA 99354, United States
| | - Daniel K Schreiber
- Pacific Northwest National Laboratory, Richland, WA 99354, United States
| | - Sarah A Saslow
- Pacific Northwest National Laboratory, Richland, WA 99354, United States
| | - Wooyong Um
- Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH), Pohang, South Korea
| | - Brian J Riley
- Pacific Northwest National Laboratory, Richland, WA 99354, United States
| | - Jing Wang
- Pacific Northwest National Laboratory, Richland, WA 99354, United States
| | - Albert A Kruger
- United States Department of Energy, Office of River Protection, Richland, WA 99352, United States
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12
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Leick N, Tran B, Bowden ME, Gennett T, Autrey T. Thermal stability and structural studies on the mixtures of Mg(BH₄)₂ and glymes. Dalton Trans 2022; 51:7268-7273. [DOI: 10.1039/d2dt01106a] [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
Coordination complexes of Mg(BH₄)₂ are of interest for energy storage, ranging from hydrogen storage in BH₄ to electrochemical storage in Mg based batteries. Understanding the stability of these complexes is...
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13
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Prange MP, Graham TR, Gorniak R, Pouvreau M, Dembowski M, Wang HW, Daemen LL, Schenter GK, Bowden ME, Nienhuis ET, Rosso KM, Clark AE, Pearce CI. Theory-Guided Inelastic Neutron Scattering of Crystalline Alkaline Aluminate Salts Bearing Principal Motifs of Solution-State Species. Inorg Chem 2021; 60:16223-16232. [PMID: 34644061 DOI: 10.1021/acs.inorgchem.1c02006] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Aluminate salts precipitated from caustic alkaline solutions exhibit a correlation between the anionic speciation and the identity of the alkali cation in the precipitate, with the aluminate ions occurring either in monomeric (Al(OH)4-) or dimeric (Al2O(OH)62-) forms. The origin of this correlation is poorly understood as are the roles that oligomeric aluminate species play in determining the solution structure, prenucleation clusters, and precipitation pathways. Characterization of aluminate solution speciation with vibrational spectroscopy results in spectra that are difficult to interpret because the ions access a diverse and dynamic configurational space. To investigate the Al(OH)4- and Al2O(OH)62- anions within a well-defined crystal lattice, inelastic neutron scattering (INS) and Raman spectroscopic data were collected and simulated by density functional theory for K2[Al2O(OH)6], Rb2[Al2O(OH)6], and Cs[Al(OH) 4]·2H2O. These structures capture archetypal solution aluminate species: the first two salts contain dimeric Al2O(OH)62- anions, while the third contains the monomeric Al(OH)4- anion. Comparisons were made to the INS and Raman spectra of sodium aluminate solutions frozen in a glassy state. In contrast to solution systems, the crystal lattice of the salts results in well-defined vibrations and associated resolved bands in the INS spectra. The use of a theory-guided analysis of the INS of this solid alkaline aluminate series revealed that differences were related to the nature of the hydrogen-bonding network and showed that INS is a sensitive probe of the degree of completeness and strength of the bond network in hydrogen-bonded materials. Results suggest that the ionic size may explain cation-specific differences in crystallization pathways in alkaline aluminate salts.
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Affiliation(s)
- Micah P Prange
- Physical Sciences Division, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Trent R Graham
- Physical Sciences Division, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Rafal Gorniak
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Maxime Pouvreau
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Mateusz Dembowski
- Physical Sciences Division, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Hsiu-Wen Wang
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Luke L Daemen
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Gregory K Schenter
- Physical Sciences Division, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States.,Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Mark E Bowden
- Physical Sciences Division, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Emily T Nienhuis
- Physical Sciences Division, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Kevin M Rosso
- Physical Sciences Division, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Aurora E Clark
- Physical Sciences Division, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States.,Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Carolyn I Pearce
- Environmental Subsystem Science Division, Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States.,Department of Crop and Soil Sciences, Washington State University, Pullman, Washington 99164, United States
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14
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Mergelsberg ST, Dembowski M, Bowden ME, Graham TR, Prange M, Wang HW, Zhang X, Qafoku O, Rosso KM, Pearce CI. Cluster defects in gibbsite nanoplates grown at acidic to neutral pH. Nanoscale 2021; 13:17373-17385. [PMID: 34713874 DOI: 10.1039/d1nr01615f] [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] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Gibbsite [α-Al(OH)3] is the solubility limiting phase for aluminum across a wide pH range, and it is a common mineral phase with many industrial applications. The growth mechanism of this layered-structure material, however, remains incompletely understood. Synthesis of gibbsite at low to circumneutral pH yields nanoplates with substantial interlayer disorder. Here we examine defects in this material in detail, and the effects of recrystallization in highly alkaline sodium hydroxide solution at 80 °C. We employed a multimodal approach, including scanning electron microscopy, magic-angle spinning nuclear magnetic resonance (MAS-NMR), Raman and infrared spectroscopies, X-ray diffraction (XRD), and X-ray total scattering pair distribution function (XPDF) analysis to characterize the ageing of the nanoplates over several days. XRD and XPDF indicate that gibbsite nanoplates precipitated at circumneutral pH contain dense, truncated sheets imparting a local difference in interlayer distance. These interlayer defects appear well described by flat Al13 aluminum hydroxide nanoclusters nearly isostructural with gibbsite sheets present under synthesis conditions and trapped as interlayer inclusions during growth. Ageing at elevated temperature in alkaline solutions gradually improves crystallinity, showing a gradual increase in H-bonding between interlayer OH groups. Between 7 to 8 vol% of the initial gibbsite nanoparticles exhibit this defect, with the majority of differences disappearing after 2-4 hours of recrystallization in alkaline solution. The results not only identify the source of disorder in gibbsite formed under acidic/neutral conditions but also point to a possible cluster-mediated growth mechanism evident through inclusion of relict oligomers with gibbsite-like topology trapped in the interlayer spaces.
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Affiliation(s)
| | - Mateusz Dembowski
- Pacific Northwest national Laboratory, Richland, Washington 99352, USA.
| | - Mark E Bowden
- Pacific Northwest national Laboratory, Richland, Washington 99352, USA.
| | - Trent R Graham
- Pacific Northwest national Laboratory, Richland, Washington 99352, USA.
| | - Micah Prange
- Pacific Northwest national Laboratory, Richland, Washington 99352, USA.
| | - Hsiu-Wen Wang
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Xin Zhang
- Pacific Northwest national Laboratory, Richland, Washington 99352, USA.
| | - Odeta Qafoku
- Pacific Northwest national Laboratory, Richland, Washington 99352, USA.
| | - Kevin M Rosso
- Pacific Northwest national Laboratory, Richland, Washington 99352, USA.
| | - Carolyn I Pearce
- Pacific Northwest national Laboratory, Richland, Washington 99352, USA.
- Washington State University, Pullman, Washington 99164, USA
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15
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Wang L, Adiga P, Zhao J, Samarakoon WS, Stoerzinger KA, Spurgeon SR, Matthews BE, Bowden ME, Sushko PV, Kaspar TC, Sterbinsky GE, Heald SM, Wang H, Wangoh LW, Wu J, Guo EJ, Qian H, Wang J, Varga T, Thevuthasan S, Feng Z, Yang W, Du Y, Chambers SA. Understanding the Electronic Structure Evolution of Epitaxial LaNi 1-xFe xO 3 Thin Films for Water Oxidation. Nano Lett 2021; 21:8324-8331. [PMID: 34546060 DOI: 10.1021/acs.nanolett.1c02901] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Rare earth nickelates including LaNiO3 are promising catalysts for water electrolysis to produce oxygen gas. Recent studies report that Fe substitution for Ni can significantly enhance the oxygen evolution reaction (OER) activity of LaNiO3. However, the role of Fe in increasing the activity remains ambiguous, with potential origins that are both structural and electronic in nature. On the basis of a series of epitaxial LaNi1-xFexO3 thin films synthesized by molecular beam epitaxy, we report that Fe substitution tunes the Ni oxidation state in LaNi1-xFexO3 and a volcano-like OER trend is observed, with x = 0.375 being the most active. Spectroscopy and ab initio modeling reveal that high-valent Fe3+δ cationic species strongly increase the transition-metal (TM) 3d bandwidth via Ni-O-Fe bridges and enhance TM 3d-O 2p hybridization, boosting the OER activity. These studies deepen our understanding of structural and electronic contributions that give rise to enhanced OER activity in perovskite oxides.
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Affiliation(s)
- Le Wang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Prajwal Adiga
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
| | - Jiali Zhao
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Widitha S Samarakoon
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
| | - Kelsey A Stoerzinger
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
| | | | | | | | - Peter V Sushko
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Tiffany C Kaspar
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - George E Sterbinsky
- Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Steve M Heald
- Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Han Wang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Linda W Wangoh
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Jinpeng Wu
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Er-Jia Guo
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Haijie Qian
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China
| | - Jiaou Wang
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China
| | | | | | - Zhenxing Feng
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
| | - Wanli Yang
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Yingge Du
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Scott A Chambers
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
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16
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Dembowski M, Loring JS, Bowden ME, Reynolds JG, Graham TR, Rosso KM, Pearce CI. The controlling role of atmosphere in dawsonite versus gibbsite precipitation from tetrahedral aluminate species. Dalton Trans 2021; 50:13438-13446. [PMID: 34477710 DOI: 10.1039/d1dt02081a] [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: 11/21/2022]
Abstract
In highly alkaline solution, aluminum speciates as the tetrahedrally coordinated aluminate monomer, Al(OH)4- and/or dimer Al2O(OH)62-, yet precipitates as octahedrally coordinated gibbsite (Al(OH)3). This tetrahedral to octahedral transformation governs Al precipitation, which is crucial to worldwide aluminum (Al) production, and to the retrieval and processing of Al-containing caustic high-level radioactive wastes. Despite its significance, the transformation pathway remains unknown. Here we explore the roles of atmospheric water and carbon dioxide in mediating the transformation of the tetrahedrally coordinated potassium aluminate dimer salt (K2Al2O(OH)6) to gibbsite versus potassium dawsonite (KAl(CO3)(OH)2). A combination of in situ attenuated total reflection infrared spectroscopy, ex situ micro X-ray diffraction, and multivariate curve resolution-alternating least squares chemometrics analysis reveals that humidity plays a key role in the transformation by limiting the amount of alkalinity neutralization by dissolved CO2. Lower humidity favors higher alkalinity and incorporation of carbonate species in the final Al product to form KAl(CO3)(OH)2. Higher humidity enables more acid generation that destabilizes dawsonite and favors gibbsite as the solubility limiting phase. This indicates that the transition from tetra- to octahedrally coordinated Al does not have to occur in bulk solution, as has often been hypothesized, but may instead occur in thin water films present on mineral surfaces in humid environments. Our findings suggest that phase selection can be controlled by humidity, which could enable new pathways to Al transformations useful to the Al processing industry, as well as improved understanding of phases that appear in caustic Al-bearing solutions exposed to atmospheric conditions.
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Affiliation(s)
- Mateusz Dembowski
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA.
| | - John S Loring
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA.
| | - Mark E Bowden
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA.
| | - Jacob G Reynolds
- Washington River Protection Solutions, LLC, Richland, Washington 93352, USA
| | - Trent R Graham
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA.
| | - Kevin M Rosso
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA.
| | - Carolyn I Pearce
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA. .,Washington State University, Pullman, WA, 99164, USA
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17
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Lawter AR, Levitskaia TG, Qafoku O, Bowden ME, Colon FC, Qafoku NP. Simultaneous immobilization of aqueous co-contaminants using a bismuth layered material. J Environ Radioact 2021; 237:106711. [PMID: 34388522 DOI: 10.1016/j.jenvrad.2021.106711] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 07/29/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
The remediation of co-located contaminants in the vadose zone can be challenging due to accessibility and responses of different contaminants to remedial actions. At the Hanford Site (WA, USA), multiple radionuclides and other hazardous contaminants are present in the vadose zone and groundwater, including iodine-129 (I), technetium-99 (Tc), uranium-238 (U), chromium (Cr), and nitrate (NO3-). We evaluated a layered Bi oxyhydroxide material for its potential to remove individual and co-located contaminants with a series of batch experiments that investigated a range of plume conditions, followed by solid phase characterization of the reacted bismuth material. The results demonstrated successful removal of four contaminants (>98% removal of I, Tc, U, and Cr from the aqueous phase after 30 days) when tested individually. When contaminants were combined, a slight decrease in Tc removal occurred (-6%p). The addition of sediment decreased the removal for Tc and I, but U and Cr removal was unaffected. The results of these batch tests demonstrated that the bismuth based oxy-hydroxide material is a promising material for sequestering multiple contaminants in situ.
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Affiliation(s)
- Amanda R Lawter
- Pacific Northwest National Laboratory (PNNL), 902 Battelle Boulevard, Richland, WA, USA, 99352.
| | - Tatiana G Levitskaia
- Pacific Northwest National Laboratory (PNNL), 902 Battelle Boulevard, Richland, WA, USA, 99352
| | - Odeta Qafoku
- Pacific Northwest National Laboratory (PNNL), 902 Battelle Boulevard, Richland, WA, USA, 99352
| | - Mark E Bowden
- Pacific Northwest National Laboratory (PNNL), 902 Battelle Boulevard, Richland, WA, USA, 99352
| | - Ferdinan Cintron Colon
- Pacific Northwest National Laboratory (PNNL), 902 Battelle Boulevard, Richland, WA, USA, 99352
| | - Nikolla P Qafoku
- Pacific Northwest National Laboratory (PNNL), 902 Battelle Boulevard, Richland, WA, USA, 99352
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18
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Wu H, Gao P, Jia H, Zou L, Zhang L, Cao X, Engelhard MH, Bowden ME, Ding MS, Hu J, Hu D, Burton SD, Xu K, Wang C, Zhang JG, Xu W. A Polymer-in-Salt Electrolyte with Enhanced Oxidative Stability for Lithium Metal Polymer Batteries. ACS Appl Mater Interfaces 2021; 13:31583-31593. [PMID: 34170663 DOI: 10.1021/acsami.1c04637] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The lithium (Li) metal polymer battery (LMPB) is a promising candidate for solid-state batteries with high safety. However, high voltage stability of such a battery has been hindered by the use of polyethylene oxide (PEO), which oxidizes at a potential lower than 4 V versus Li. Herein, we adopt the polymer-in-salt electrolyte (PISE) strategy to circumvent the disadvantage of the PEO-lithium bis(fluorosulfonyl)imide (LiFSI) system with EO/Li ≤ 8 through a dry ball-milling process to avoid the contamination of the residual solvent. The obtained solid-state PISEs exhibit distinctly different morphologies and coordination structures which lead to significant improvement in oxidative stability. P(EO)1LiFSI has a low melting temperature, a high ionic conductivity at 60 °C, and an oxidative stability of ∼4.5 V versus Li/Li+. With an effective interphase rich in inorganic species and a good stability of the hybrid polymer electrolyte toward Li metal, the LMPB constructed with Li||LiNi1/3Co1/3Mn1/3O2 can retain 74.4% of capacity after 186 cycles at 60 °C under the cutoff charge voltage of 4.3 V. The findings offer a promising pathway toward high-voltage stable polymer electrolytes for high-energy-density and safe LMPBs.
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Affiliation(s)
- Haiping Wu
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Peiyuan Gao
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Hao Jia
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Lianfeng Zou
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Linchao Zhang
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Xia Cao
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Mark H Engelhard
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Mark E Bowden
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Michael S Ding
- Battery Science Branch, U.S. Army Research Laboratory, Adelphi, Maryland 20783, United States
| | - Jiangtao Hu
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Dehong Hu
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Sarah D Burton
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Kang Xu
- Battery Science Branch, U.S. Army Research Laboratory, Adelphi, Maryland 20783, United States
| | - Chongmin Wang
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Ji-Guang Zhang
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Wu Xu
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
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19
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Kaspar TC, Spurgeon SR, Matthews BE, Bowden ME, Heald SM, Wang L, Kelley R, Paudel R, Isaacs-Smith T, Comes RB, Yin X, Tang CS, Wee ATS, Chambers SA. Incorporation of Ti in epitaxial Fe 2TiO 4thin films. J Phys Condens Matter 2021; 33:314004. [PMID: 34038894 DOI: 10.1088/1361-648x/ac0571] [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: 03/25/2021] [Accepted: 05/26/2021] [Indexed: 06/12/2023]
Abstract
The titanomagnetites (Fe2-xTixO4,x⩽ 1) are a family of reducible spinel-structure oxides of interest for their favorable magnetic, catalytic, and electrical transport properties. To understand the stability of the system during low temperature deposition, epitaxial thin films of Fe2TiO4were deposited by molecular beam epitaxy (MBE) on MgO(001) at 250-375 °C. The homogeneous incorporation of Ti, Fe valence state, and film morphology were all found to be strongly dependent on the oxidation conditions at the low substrate temperatures employed. More oxidizing conditions led to phase separation into epitaxial, faceted Fe3O4and rutile TiO2. Less oxidizing conditions resulted in polycrystalline films that exhibited Ti segregation to the film surface, as well as mixed Fe valence (Fe3+, Fe2+, Fe0). A narrow window of intermediate oxygen partial pressure during deposition yielded nearly homogeneous Ti incorporation and a large fraction of Fe2+. However, these films were poorly crystallized, and no occupation of tetrahedral sites in the spinel lattice by Fe2+was detected by x-ray magnetic circular dichroism at the Fe L-edge. After vacuum annealing, a small fraction of Fe2+was found to occupy tetrahedral sites. Comparison of these results with previous work suggests that the low temperature deposition conditions imposed by use of MgO substrates limits the incorporation of Ti into the spinel lattice. This work suggests a path towards obtaining stoichiometric, well-crystallized Fe2TiO4by MBE by utilizing high substrate temperature and low oxygen partial pressure during deposition on thermally stable substrates.
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Affiliation(s)
- Tiffany C Kaspar
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, United States of America
| | - Steven R Spurgeon
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, United States of America
| | - Bethany E Matthews
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, United States of America
| | - Mark E Bowden
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, United States of America
| | - Steve M Heald
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, United States of America
| | - Le Wang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, United States of America
| | - Ron Kelley
- ThermoFisher Scientific, Hillsboro, OR, United States of America
| | - Rajendra Paudel
- Department of Physics, Auburn University, Auburn, AL, United States of America
| | - Tamara Isaacs-Smith
- Department of Physics, Auburn University, Auburn, AL, United States of America
| | - Ryan B Comes
- Department of Physics, Auburn University, Auburn, AL, United States of America
| | - Xinmao Yin
- Singapore Synchrotron Light Source, National University of Singapore, Singapore
- Department of Physics, Faculty of Science, National University of Singapore, Singapore
| | - Chi Sin Tang
- Singapore Synchrotron Light Source, National University of Singapore, Singapore
- Department of Physics, Faculty of Science, National University of Singapore, Singapore
| | - Andrew T S Wee
- Department of Physics, Faculty of Science, National University of Singapore, Singapore
| | - Scott A Chambers
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, United States of America
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20
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Riechers SL, Petrik NG, Loring JS, Bowden ME, Cliff JB, Murphy MK, Pearce CI, Kimmel GA, Rosso KM. Direct visualization of radiation-induced transformations at alkali halide-air interfaces. Commun Chem 2021; 4:49. [PMID: 36697542 PMCID: PMC9814822 DOI: 10.1038/s42004-021-00486-2] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 03/05/2021] [Indexed: 01/28/2023] Open
Abstract
Radiation driven reactions at mineral/air interfaces are important to the chemistry of the atmosphere, but experimental constraints (e.g. simultaneous irradiation, in situ observation, and environmental control) leave process understanding incomplete. Using a custom atomic force microscope equipped with an integrated X-ray source, transformation of potassium bromide surfaces to potassium nitrate by air radiolysis species was followed directly in situ at the nanoscale. Radiolysis initiates dynamic step edge dissolution, surface composition evolution, and ultimately nucleation and heteroepitaxial growth of potassium nitrate crystallites mediated by surface diffusion at rates controlled by adsorbed water. In contrast to in situ electron microscopy and synchrotron-based imaging techniques where high radiation doses are intrinsic, our approach illustrates the value of decoupling irradiation and the basis of observation.
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Affiliation(s)
- Shawn L. Riechers
- grid.451303.00000 0001 2218 3491Pacific Northwest National Laboratory, Richland, WA USA
| | - Nikolay G. Petrik
- grid.451303.00000 0001 2218 3491Pacific Northwest National Laboratory, Richland, WA USA
| | - John S. Loring
- grid.451303.00000 0001 2218 3491Pacific Northwest National Laboratory, Richland, WA USA
| | - Mark E. Bowden
- grid.451303.00000 0001 2218 3491Pacific Northwest National Laboratory, Richland, WA USA
| | - John B. Cliff
- grid.451303.00000 0001 2218 3491Pacific Northwest National Laboratory, Richland, WA USA
| | - Mark K. Murphy
- grid.451303.00000 0001 2218 3491Pacific Northwest National Laboratory, Richland, WA USA
| | - Carolyn I. Pearce
- grid.451303.00000 0001 2218 3491Pacific Northwest National Laboratory, Richland, WA USA
| | - Greg A. Kimmel
- grid.451303.00000 0001 2218 3491Pacific Northwest National Laboratory, Richland, WA USA
| | - Kevin M. Rosso
- grid.451303.00000 0001 2218 3491Pacific Northwest National Laboratory, Richland, WA USA
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21
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Wang L, Yang Z, Yin X, Taylor SD, He X, Tang CS, Bowden ME, Zhao J, Wang J, Liu J, Perea DE, Wangoh L, Wee ATS, Zhou H, Chambers SA, Du Y. Spontaneous phase segregation of Sr 2NiO 3 and SrNi 2O 3 during SrNiO 3 heteroepitaxy. Sci Adv 2021; 7:eabe2866. [PMID: 33674310 PMCID: PMC7935367 DOI: 10.1126/sciadv.abe2866] [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: 08/12/2020] [Accepted: 01/21/2021] [Indexed: 06/12/2023]
Abstract
Recent discovery of superconductivity in Nd0.8Sr0.2NiO2 motivates the synthesis of other nickelates for providing insights into the origin of high-temperature superconductivity. However, the synthesis of stoichiometric R 1-x Sr x NiO3 thin films over a range of x has proven challenging. Moreover, little is known about the structures and properties of the end member SrNiO3 Here, we show that spontaneous phase segregation occurs while depositing SrNiO3 thin films on perovskite oxide substrates by molecular beam epitaxy. Two coexisting oxygen-deficient Ruddlesden-Popper phases, Sr2NiO3 and SrNi2O3, are formed to balance the stoichiometry and stabilize the energetically preferred Ni2+ cation. Our study sheds light on an unusual oxide thin-film nucleation process driven by the instability in perovskite structured SrNiO3 and the tendency of transition metal cations to form their most stable valence (i.e., Ni2+ in this case). The resulting metastable reduced Ruddlesden-Popper structures offer a testbed for further studying emerging phenomena in nickel-based oxides.
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Affiliation(s)
- Le Wang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Zhenzhong Yang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Xinmao Yin
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore
| | - Sandra D Taylor
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Xu He
- Catalan Institute of Nanoscience and Nanotechnology-ICN2, CSIC and BIST, Campus UAB, 08193 Bellaterra, Spain
| | - Chi Sin Tang
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore 117456, Singapore
| | - Mark E Bowden
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Jiali Zhao
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China
| | - Jiaou Wang
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China
| | - Jishan Liu
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences (CAS) , Shanghai 200050, China
| | - Daniel E Perea
- Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Linda Wangoh
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Andrew T S Wee
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore
| | - Hua Zhou
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Scott A Chambers
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA.
| | - Yingge Du
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA.
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22
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Blanchet MD, Heath JJ, Kaspar TC, Matthews BE, Spurgeon SR, Bowden ME, Heald SM, Issacs-Smith T, Kuroda MA, Comes RB. Electronic and structural properties of single-crystal Jahn-Teller active Co 1+x Mn 2-x O 4 thin films. J Phys Condens Matter 2021; 33:124002. [PMID: 33438585 DOI: 10.1088/1361-648x/abd573] [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] [Indexed: 06/12/2023]
Abstract
Recent investigations on spinel CoMn2O4 have shown its potential for applications in water splitting and fuel cell technologies as it exhibits strong catalytic behavior through oxygen reduction reactivity. To further understand this material, we report for the first time the synthesis of single-crystalline Co1+x Mn2-x O4 thin films using molecular beam epitaxy. By varying sample composition, we establish links between cation stoichiometry and material properties using in-situ x-ray photoelectron spectroscopy, x-ray diffraction, scanning transmission electron microscopy, x-ray absorption spectroscopy, and spectroscopic ellipsometry. Our results indicate that excess Co ions occupy tetrahedral interstitial sites at lower excess Co stoichiometries, and become substitutional for octahedrally-coordinated Mn at higher Co levels. We compare these results with density functional theory models of stoichiometric CoMn2O4 to understand how the Jahn-Teller distortion and hybridization in Mn-O bonds impact the ability to hole dope the material with excess Co. The findings provide important insights into CoMn2O4 and related spinel oxides that are promising candidates for inexpensive oxygen reduction reaction catalysts.
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Affiliation(s)
- Miles D Blanchet
- Department of Physics, Auburn University, Auburn, AL 36849, United States of America
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23
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Jia H, Xu Y, Burton SD, Gao P, Zhang X, Matthews BE, Engelhard MH, Zhong L, Bowden ME, Xiao B, Han KS, Wang C, Xu W. Enabling Ether-Based Electrolytes for Long Cycle Life of Lithium-Ion Batteries at High Charge Voltage. ACS Appl Mater Interfaces 2020; 12:54893-54903. [PMID: 33226769 DOI: 10.1021/acsami.0c18177] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Lithium-ion batteries (LIBs) with high-nickel (Ni) content LiNixMnyCozO2 (x + y + z = 1) (NMC with Ni ≥ 0.6) cathodes operated at high charge voltages have been considered as one of the most promising candidates for addressing the challenge of increasing energy density demand. Conventional LiPF6-organocarbonate electrolytes exhibit incompatibility with such cell chemistries under certain testing conditions because of the instability of electrode/electrolyte interphases. In response to this challenge, ether-based electrolytes with finely tuned structure and composition of solvation sheaths were developed and evaluated in graphite (Gr)∥NMC811 cell chemistry in 2.5-4.4 V, despite ethers being conventionally considered to be unfavorable electrolyte solvents for LIBs because of their anodic instability above 4.0 V and cointercalation into Gr electrodes. The functional ether-based electrolytes in this work enable both excellent cycle life and high rate capability of Gr∥NMC811 cells. Mechanistic studies reveal that the unique structure and composition of the solvation sheath of the functional ether electrolytes are the main reasons behind their excellent anodic stability and effective protection of the Gr electrode and, consequently, the extraordinary cell performances when operated at high charge cutoff voltages. This work also provides a feasible approach in developing highly stable functional electrolytes for high-energy density LIBs.
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Affiliation(s)
- Hao Jia
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Yaobin Xu
- Environmental and Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Sarah D Burton
- Environmental and Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Peiyuan Gao
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Xianhui Zhang
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Bethany E Matthews
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Mark H Engelhard
- Environmental and Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Lirong Zhong
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Mark E Bowden
- Environmental and Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Biwei Xiao
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Kee Sung Han
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Chongmin Wang
- Environmental and Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Wu Xu
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
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24
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Xie X, He C, Li B, He Y, Cullen DA, Wegener EC, Kropf AJ, Martinez U, Cheng Y, Engelhard MH, Bowden ME, Song M, Lemmon T, Li XS, Nie Z, Liu J, Myers DJ, Zelenay P, Wang G, Wu G, Ramani V, Shao Y. Performance enhancement and degradation mechanism identification of a single-atom Co–N–C catalyst for proton exchange membrane fuel cells. Nat Catal 2020. [DOI: 10.1038/s41929-020-00546-1] [Citation(s) in RCA: 212] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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25
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Wangoh LW, Yang Z, Wang L, Bowden ME, Yin X, Wee ATS, Mueller KT, Murugesan V, Du Y. Mg 2+ Diffusion-Induced Structural and Property Evolution in Epitaxial Fe 3O 4 Thin Films. ACS Nano 2020; 14:14887-14894. [PMID: 33074667 DOI: 10.1021/acsnano.0c04025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Epitaxial Fe3O4 thin films grown on single crystal MgO(001) present well-defined model systems to study fundamental multivalent ion diffusion and associated phase transition processes in transition-metal-oxide-based cathodes. In this work, we show at an atomic scale the Mg2+ diffusion pathways, kinetics, and reaction products at the Fe3O4/MgO heterostructures under different oxygen partial pressures but with the same thermal annealing conditions. Combining microscopic, optical, and spectroscopic techniques, we demonstrate that an oxygen-rich environment promotes facile Mg2+ incorporation into the Fe2+ sites, leading to the formation of Mg1-xFe2+xO4 spinel structures, where the corresponding portion of the Fe2+ ions are oxidized to Fe3+. Conversely, annealing in vacuum results in the formation of a thin interfacial rocksalt layer (Mg1-yFeyO), which serves as a blocking layer leading to significantly reduced Mg2+ diffusion to the bulk Fe3O4. The observed changes in transport and optical properties as a result of Mg diffusion are interpreted in light of the electronic structures determined by X-ray photoelectron spectroscopy and X-ray absorption spectroscopy. Our results reveal the critical role of available anions in governing cation diffusion in the spinel structures and the need to prevent formation of unwanted reaction intermediates for the promotion of facile cation diffusion.
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Affiliation(s)
- Linda W Wangoh
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354, United States
- Joint Center for Energy Storage Research, Lemont, Illinois 60439, United States
| | - Zhenzhong Yang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354, United States
| | - Le Wang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354, United States
| | - Mark E Bowden
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Xinmao Yin
- Department of Physics, Faculty of Science, National University of Singapore, S12 Science Drive 3, 117551 Singapore
| | - Andrew T S Wee
- Department of Physics, Faculty of Science, National University of Singapore, S12 Science Drive 3, 117551 Singapore
| | - Karl T Mueller
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354, United States
- Joint Center for Energy Storage Research, Lemont, Illinois 60439, United States
| | - Vijayakumar Murugesan
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354, United States
- Joint Center for Energy Storage Research, Lemont, Illinois 60439, United States
| | - Yingge Du
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354, United States
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26
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Wang L, Yang Z, Bowden ME, Freeland JW, Sushko PV, Spurgeon SR, Matthews B, Samarakoon WS, Zhou H, Feng Z, Engelhard MH, Du Y, Chambers SA. Hole-Trapping-Induced Stabilization of Ni 4 + in SrNiO 3 /LaFeO 3 Superlattices. Adv Mater 2020; 32:e2005003. [PMID: 33006412 DOI: 10.1002/adma.202005003] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/06/2020] [Indexed: 06/11/2023]
Abstract
Creating new functionality in materials containing transition metals is predicated on the ability to control the associated charge states. For a given transition metal, there is an upper limit on valence that is not exceeded under normal conditions. Here, it is demonstrated that this limit of 3+ for Ni and Fe can be exceeded via synthesis of (SrNiO3 )m /(LaFeO3 )n superlattices by tuning n and m. The Goldschmidt tolerance constraints are lifted, and SrNi4+ O3 with holes on adjacent O anions is stabilized as a perovskite at the single-unit-cell level (m = 1). Holding m = 1, spectroscopy reveals that the n = 1 superlattice contains Ni3+ and Fe4+ , whereas Ni4+ and Fe3+ are observed in the n = 5 superlattice. It is revealed that the B-site cation valences can be tuned by controlling the magnitude of the FeO6 octahedral rotations, which, in turn, determine the energy balance between Ni3+ /Fe4+ and Ni4+ /Fe3+ , thus controlling emergent electrical properties such as the band alignment and resulting hole confinement. This approach can be extended to other systems for synthesizing novel, metastable layered structures with new functionalities.
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Affiliation(s)
- Le Wang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Zhenzhong Yang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Mark E Bowden
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - John W Freeland
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Peter V Sushko
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Steven R Spurgeon
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Bethany Matthews
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Widitha S Samarakoon
- School of Chemical, Biological and Environment Engineering, Oregon State University, Corvallis, OR, 97331, USA
| | - Hua Zhou
- Advanced Photon Source, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Zhenxing Feng
- School of Chemical, Biological and Environment Engineering, Oregon State University, Corvallis, OR, 97331, USA
| | - Mark H Engelhard
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Yingge Du
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Scott A Chambers
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
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27
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Bowden ME, Ginovska B, Jones MO, Karkamkar AJ, Ramirez-Cuesta AJ, Daemen LL, Schenter GK, Miller SA, Repo T, Chernichenko K, Leick N, Martinez MB, Autrey T. Heterolytic Scission of Hydrogen Within a Crystalline Frustrated Lewis Pair. Inorg Chem 2020; 59:15295-15301. [PMID: 33000622 DOI: 10.1021/acs.inorgchem.0c02290] [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: 11/28/2022]
Abstract
We report the heterolysis of molecular hydrogen under ambient conditions by the crystalline frustrated Lewis pair (FLP) 1-{2-[bis(pentafluorophenyl)boryl]phenyl}-2,2,6,6-tetramethylpiperidine (KCAT). The gas-solid reaction provides an approach to prepare the solvent-free, polycrystalline ion pair KCATH2 through a single crystal to single crystal transformation. The crystal lattice of KCATH2 increases in size relative to the parent KCAT by approximately 2%. Microscopy was used to follow the transformation of the highly colored red/orange KCAT to the colorless KCATH2 over a period of 2 h at 300 K under a flow of H2 gas. There is no evidence of crystal decrepitation during hydrogen uptake. Inelastic neutron scattering employed over a temperature range from 4-200 K did not provide evidence for the formation of polarized H2 in a precursor complex within the crystal at low temperatures and high pressures. However, at 300 K, the INS spectrum of KCAT transformed to the INS spectrum of KCATH2. Calculations suggest that the driving force is more favorable in the solid state compared to the solution or gas phase, but the addition of H2 into the KCAT crystal is unfavorable. Ab Initio methods were used to calculate the INS spectra of KCAT, KCATH2, and a possible precursor complex of H2 in the pocket between the B and N of crystalline KCAT. Ex-situ NMR showed that the transformation from KCAT to KCATH2 is quantitative and our results suggest that the hydrogen heterolysis process occurs via H2 diffusion into the FLP crystal with a rate-limiting movement of H2 from inactive positions to reactive sites.
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Affiliation(s)
- Mark E Bowden
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, P.O. Box 999 Richland, Washington 99352, United States
| | - Bojana Ginovska
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, P.O. Box 999 Richland, Washington 99352, United States
| | - Martin Owen Jones
- ISIS Neutron and Muon Spallation Facility, STFC, RAL, Didcot OX11 0QX, U.K.,St Andrews University, St Andrews, Fife KY16 9AJ, Scotland U.K
| | - Abhijeet J Karkamkar
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, P.O. Box 999 Richland, Washington 99352, United States
| | - Anibal J Ramirez-Cuesta
- Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Luke L Daemen
- Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Gregory K Schenter
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, P.O. Box 999 Richland, Washington 99352, United States
| | - Seth A Miller
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, P.O. Box 999 Richland, Washington 99352, United States
| | - Timo Repo
- Department of Chemistry, University of Helsinki, P.O. Box 55, 00014 Helsinki, Finland
| | | | - Noemi Leick
- National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80403, United States
| | - Madison B Martinez
- National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80403, United States
| | - Tom Autrey
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, P.O. Box 999 Richland, Washington 99352, United States
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28
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Sinnwell MA, Miller QRS, Palys L, Barpaga D, Liu L, Bowden ME, Han Y, Ghose S, Sushko ML, Schaef HT, Xu W, Nyman M, Thallapally PK. Molecular Intermediate in the Directed Formation of a Zeolitic Metal-Organic Framework. J Am Chem Soc 2020; 142:17598-17606. [PMID: 32957777 DOI: 10.1021/jacs.0c07862] [Citation(s) in RCA: 8] [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: 11/29/2022]
Abstract
Directed synthesis promises control over architecture and function of framework materials. In practice, however, designing such syntheses requires a detailed understanding of the multistep pathways of framework formations, which remain elusive. By identifying intermediate coordination complexes, this study provides insights into the complex role of a structure-directing agent (SDA) in the synthetic realization of a promising material. Specifically, a novel molecular intermediate was observed in the formation of an indium zeolitic metal-organic framework (ZMOF) with a sodalite topology. The role of the imidazole SDA was revealed by time-resolved in situ powder X-ray diffraction (XRD) and small-angle X-ray scattering (SAXS).
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Affiliation(s)
| | | | - Lauren Palys
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | | | | | | | - Yi Han
- Key Laboratory of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Sanjit Ghose
- National Synchrotron Light Sources II (NSLS-II) at Brookhaven National Laboratory, Upton, New York 11973, United States
| | | | | | - Wenqian Xu
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - May Nyman
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
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29
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Sinnwell MA, Miller QRS, Liu L, Tao J, Bowden ME, Kovarik L, Barpaga D, Han Y, Kishan Motkuri R, Sushko ML, Schaef HT, Thallapally PK. Kinetics and Mechanisms of ZnO to ZIF-8 Transformations in Supercritical CO 2 Revealed by In Situ X-ray Diffraction. ChemSusChem 2020; 13:2602-2612. [PMID: 32227672 DOI: 10.1002/cssc.202000434] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 03/27/2020] [Indexed: 06/10/2023]
Abstract
ZIF-8 was synthesized in supercritical carbon dioxide (scCO2 ). In situ powder X-ray diffraction, ex situ microscopy, and simulations provide an encompassing view of the formation of ZIF-8 and intermediary ZnO@ZIF-8 composites in this nontraditional solvent. Time-resolved imaging exposed divergent physicochemical reaction pathways from previous studies of the growth of anisotropic ZIF-8 core@shell structures in traditional solvents. Synthetically relevant physiochemical properties of scCO2 were integrated into classical nucleation theory, relating interfacial forces, calculated through DFTB+ based molecular dynamics (MD), with 3D nucleation outcomes. The kinetics of crystallization were examined and displayed a characteristic signature of time- and temperature-dependent mechanisms over the extent of the reaction. Lastly, it is shown that subtle factors, such as the extent of reaction and the size/shape of sacrificial templates can tailor ZIF-8 composition and size, eliciting control over hierarchical porosity in a nonconventional green solvent.
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Affiliation(s)
- Michael A Sinnwell
- Physical and Computational Science Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington, 99352, USA
| | - Quin R S Miller
- Physical and Computational Science Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington, 99352, USA
| | - Lili Liu
- Physical and Computational Science Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington, 99352, USA
| | - Jinhui Tao
- Physical and Computational Science Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington, 99352, USA
| | - Mark E Bowden
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory (PNNL), Richland, Washington, 99352, USA
| | - Libor Kovarik
- Physical and Computational Science Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington, 99352, USA
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory (PNNL), Richland, Washington, 99352, USA
| | - Dushyant Barpaga
- Energy and Environment Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington, 99352, USA
| | - Yi Han
- Key Laboratory of Eco-Chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Radha Kishan Motkuri
- Energy and Environment Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington, 99352, USA
| | - Maria L Sushko
- Physical and Computational Science Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington, 99352, USA
| | - Herbert T Schaef
- Physical and Computational Science Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington, 99352, USA
| | - Praveen K Thallapally
- Physical and Computational Science Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington, 99352, USA
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30
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Dembowski M, Prange MP, Pouvreau M, Graham TR, Bowden ME, N'Diaye A, Schenter GK, Clark SB, Clark AE, Rosso KM, Pearce CI. Inference of principal species in caustic aluminate solutions through solid-state spectroscopic characterization. Dalton Trans 2020; 49:5869-5880. [PMID: 32307503 DOI: 10.1039/d0dt00229a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Tetrahedrally coordinated aluminate Al(OH)4- and dialuminate Al2O(OH)62- anions are considered to be major species in aluminum-rich alkaline solutions. However, their relative abundance remains difficult to spectroscopically quantify due to local structure similarities and poorly understood effects arising from extent of polymerization and counter-cations. To help unravel these relationships here we report detailed characterization of three solid-phase analogues as structurally and compositionally well-defined reference materials. We successfully synthesized a cesium salt of the aluminate monomer, CsAl(OH)4·2H2O, for comparison to potassium and rubidium salts of the aluminate dimer, K2Al2O(OH)6, and Rb2Al2O(OH)6, respectively. Single crystal and powder X-ray diffraction methods clearly reveal the structure and purity of these materials for which a combination of 27Al MAS-NMR, Al K-edge X-ray absorption and Raman/IR spectroscopies was then used to fingerprint the two major tetrahedrally coordinated Al species. The resulting insights into the effect of Al-O-Al bridge formation between aluminate tetrahedra on spectroscopic features may also be generalized to the many materials that are based on this motif.
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Affiliation(s)
- Mateusz Dembowski
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA.
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31
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Scafetta MD, Kaspar TC, Bowden ME, Spurgeon SR, Matthews B, Chambers SA. Reversible Oxidation Quantified by Optical Properties in Epitaxial Fe 2CrO 4+δ Films on (001) MgAl 2O 4. ACS Omega 2020; 5:3240-3249. [PMID: 32118139 PMCID: PMC7045312 DOI: 10.1021/acsomega.9b03299] [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] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Accepted: 02/03/2020] [Indexed: 06/10/2023]
Abstract
We report on the structural and optical properties of Fe2CrO4+δ epitaxial films grown by molecular beam epitaxy on MgAl2O4 (001) as a function of δ (average cation valence). The average Fe valence is linked to the out-of-plane lattice parameter and the extent of light absorption in the infrared spectral region. Over-oxidized films (0 < δ < 0.5) exhibit smaller lattice parameters and suppressed infrared absorption. The lattice parameter is found to differ for films of equivalent oxidation state but different thermal histories. We discuss the behavior of a novel infrared transition present at ∼0.6 eV in Fe2CrO4 films deposited at or above 400 °C. An optical transition found in all films at 0.9 eV independent of the synthesis temperature can be used to quantify the oxidation state of Fe2CrO4+δ. This research provides new insights into the atomic structure, optical processes, oxidation states, electronic structure, and application potential of Fe2CrO4+δ.
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Affiliation(s)
- Mark D. Scafetta
- Physical
and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland 99532, Washington, United States
| | - Tiffany C. Kaspar
- Physical
and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland 99532, Washington, United States
| | - Mark E. Bowden
- Environmental
Molecular Sciences Laboratory, Pacific Northwest
National Laboratory, Richland 99532, Washington, United States
| | - Steven R. Spurgeon
- Energy
and Environment Directorate, Pacific Northwest
National Laboratory, Richland 99532, Washington, United States
| | - Bethany Matthews
- Energy
and Environment Directorate, Pacific Northwest
National Laboratory, Richland 99532, Washington, United States
| | - Scott A. Chambers
- Physical
and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland 99532, Washington, United States
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Dimitrievska M, Chong M, Bowden ME, Wu H, Zhou W, Nayyar I, Ginovska B, Gennett T, Autrey T, Jensen CM, Udovic TJ. Structural and reorientational dynamics of tetrahydroborate (BH 4-) and tetrahydrofuran (THF) in a Mg(BH 4) 2·3THF adduct: neutron-scattering characterization. Phys Chem Chem Phys 2019; 22:368-378. [PMID: 31819933 DOI: 10.1039/c9cp03311d] [Citation(s) in RCA: 5] [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
Metal borohydrides are considered promising materials for hydrogen storage applications due to their high volumetric and gravimetric hydrogen density. Recently, different Lewis bases have been complexed with Mg(BH4)2 in efforts to improve hydrogenation/dehydrogenation properties. Notably, Mg(BH4)2·xTHF adducts involving tetrahydrofuran (THF; C4H8O) have proven to be especially interesting. This work focuses on exploring the physicochemical properties of the THF-rich Mg(BH4)2·3THF adduct using neutron-scattering methods and molecular DFT calculations. Structural analysis, based on neutron diffraction measurements of Mg(11BH4)2·3TDF (D - deuterium), has confirmed a lowering of the symmetry upon cooling, from monoclinic C2/c to P1[combining macron] via a triclinic distortion. Vibrational properties are strongly influenced by the THF environment, showing a splitting in spectral features as a result of changes in the bond lengths, force constants, and lowering of the overall symmetry. Interestingly, the orientational mobilities of the BH4- anions obtained from quasielastic neutron scattering (QENS) are not particularly sensitive to the presence of THF and compare well with the mobilities of BH4- anions in unsolvated Mg(BH4)2. The QENS data point to uniaxial 180° jump reorientations of the BH4- anions around a preferred C2 anion symmetry axis. The THF rings are also found to be orientationally mobile, undergoing 180° reorientational jumps around their C2 molecular symmetry axis with jump frequencies about an order of magnitude lower than those for the BH4- anions. In contrast, no dynamical behavior of the THF rings is observed with QENS for a more THF-deficient 2Mg(BH4)2·THF adduct. This lack of comparable THF mobility may reflect a stronger Mg2+-THF bonding interaction for lower THF/Mg(BH4)2 stoichiometric ratios, which is consistent with DFT calculations showing a decrease in the binding energy with each additional THF ring in the adduct. Based on the combined experimental and computational results, we propose that combining THF and Mg(BH4)2 is beneficial to (i) preventing weakly bound THF from coming free from the Mg2+ cation and reducing the concentration of any unwanted impurity in the hydrogen and (ii) disrupting the stability of the crystalline phase, leading to a lower melting point and enhanced kinetics for any potential hydrogen storage applications.
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Affiliation(s)
- Mirjana Dimitrievska
- National Renewable Energy Laboratory (NREL), 5013 Denver W Pkwy, Golden, CO 80401, USA.
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Liu J, Jia E, Wang L, Stoerzinger KA, Zhou H, Tang CS, Yin X, He X, Bousquet E, Bowden ME, Wee ATS, Chambers SA, Du Y. Tuning the Electronic Structure of LaNiO 3 through Alloying with Strontium to Enhance Oxygen Evolution Activity. Adv Sci (Weinh) 2019; 6:1901073. [PMID: 31592141 PMCID: PMC6774028 DOI: 10.1002/advs.201901073] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 07/17/2019] [Indexed: 05/21/2023]
Abstract
The perovskite oxide LaNiO3 is a promising oxygen electrocatalyst for renewable energy storage and conversion technologies. Here, it is shown that strontium substitution for lanthanum in coherently strained, epitaxial LaNiO3 films (La1- x Sr x NiO3) significantly enhances the oxygen evolution reaction (OER) activity, resulting in performance at x = 0.5 comparable to the state-of-the-art catalyst Ba0.5Sr0.5Co0.8Fe0.2O3- δ . By combining X-ray photoemission and X-ray absorption spectroscopies with density functional theory, it is shown that an upward energy shift of the O 2p band relative to the Fermi level occurs with increasing x in La1- x Sr x NiO3. This alloying step strengthens Ni 3d-O 2p hybridization and decreases the charge transfer energy, which in turn accounts for the enhanced OER activity.
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Affiliation(s)
- Jishan Liu
- State Key Laboratory of Functional Materials for InformaticsShanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai200050China
- Center for Excellence in Superconducting ElectronicsChinese Academy of SciencesShanghai200050China
- Physical and Computational Sciences DirectoratePacific Northwest National LaboratoryRichlandWA99354USA
| | - Endong Jia
- Physical and Computational Sciences DirectoratePacific Northwest National LaboratoryRichlandWA99354USA
- The Key Laboratory of Solar Thermal Energy and Photovoltaic SystemInstitute of Electrical EngineeringChinese Academy of SciencesBeijing100190China
- Department of PhysicsUniversity of Chinese Academy of SciencesBeijing100190China
| | - Le Wang
- Physical and Computational Sciences DirectoratePacific Northwest National LaboratoryRichlandWA99354USA
| | - Kelsey A. Stoerzinger
- Physical and Computational Sciences DirectoratePacific Northwest National LaboratoryRichlandWA99354USA
- School of ChemicalBiological and Environmental EngineeringOregon State UniversityCorvallisOR97331USA
| | - Hua Zhou
- X‐Ray Science DivisionAdvanced Photon SourceArgonne National LaboratoryLemontIL60439USA
| | - Chi Sin Tang
- Department of PhysicsFaculty of ScienceNational University of SingaporeSingapore117542Singapore
- NUS Graduate School for Integrative Sciences and EngineeringNational University of SingaporeSingapore117456Singapore
| | - Xinmao Yin
- Department of PhysicsFaculty of ScienceNational University of SingaporeSingapore117542Singapore
| | - Xu He
- Theoretical Materials PhysicsQ‐MATCesamUniversity of LiègeB‐4000LiègeBelgium
| | - Eric Bousquet
- Theoretical Materials PhysicsQ‐MATCesamUniversity of LiègeB‐4000LiègeBelgium
| | - Mark E. Bowden
- Environmental Molecular Sciences LaboratoryPacific Northwest National LaboratoryRichlandWA99354USA
| | - Andrew T. S. Wee
- Department of PhysicsFaculty of ScienceNational University of SingaporeSingapore117542Singapore
| | - Scott A. Chambers
- Physical and Computational Sciences DirectoratePacific Northwest National LaboratoryRichlandWA99354USA
| | - Yingge Du
- Physical and Computational Sciences DirectoratePacific Northwest National LaboratoryRichlandWA99354USA
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Thompson MR, Riley BJ, Bowden ME, Olszta MJ, Edwards DJ, Crum JV, Johnson BR, Chong S. Crystal structure and chemistry of tricadmium digermanium tetraarsenide, Cd 3Ge 2As 4. Acta Crystallogr E Crystallogr Commun 2019; 75:1291-1296. [PMID: 31523452 PMCID: PMC6727045 DOI: 10.1107/s2056989019010636] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 07/26/2019] [Indexed: 11/10/2022]
Abstract
A cadmium germanium arsenide compound, Cd3Ge2As4, was synthesized using a double-containment fused quartz ampoule method within a rocking furnace and a melt-quench technique. The crystal structure was determined from single-crystal X-ray diffraction, scanning and transmission electron microscopies, and selected area diffraction and confirmed with electron backscatter diffraction. The chemistry was verified with electron energy loss spectroscopy. A cadmium germanium arsenide compound, Cd3Ge2As4, was synthesized using a double-containment fused quartz ampoule method within a rocking furnace and a melt-quench technique. The crystal structure was determined from single-crystal X-ray diffraction (SC-XRD), scanning and transmission electron microscopies (i.e. SEM, STEM, and TEM), and selected area diffraction (SAD) and confirmed with electron backscatter diffraction (EBSD). The chemistry was verified with electron energy loss spectroscopy (EELS).
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35
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Zhang X, He Y, Liu J, Bowden ME, Kovarik L, Mao SX, Wang C, De Yoreo JJ, Rosso KM. Accessing crystal-crystal interaction forces with oriented nanocrystal atomic force microscopy probes. Nat Protoc 2019; 13:2005-2030. [PMID: 30190550 DOI: 10.1038/s41596-018-0027-4] [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: 11/09/2022]
Abstract
Biominerals serve as critical structures of living systems and play important roles in biochemical processes. Understanding their crystallization mechanisms is therefore central to many areas of biology, biogeoscience, and biochemistry. Some biominerals, such as bone and dentin, are hierarchical nanocomposite structures constructed by sequential addition of individual oriented nanocrystals. The driving forces that enable this oriented assembly are still poorly understood, with advances in understanding limited in part by the availability of techniques that can precisely measure the delicate interactions between nanocrystals as a function of their separation distance and mutual orientation. Here, we provide a comprehensive protocol for (i) fabricating oriented single-nanocrystal atomic force microscopy (AFM) probes using focused ion beam (FIB) milling and (ii) performing oriented nanocrystal interaction force measurements using dynamic force spectroscopy (DFS)-based AFM and environmental transmission electron microscopy (ETEM)-AFM techniques. We illustrate how to fabricate oriented nanocrystal force probes using commercial bulk crystals or nano/microcrystals of calcite, zinc oxide, and rutile. The typical protocol for fabricating one AFM crystal probe takes 2-3 h. In addition, we illustrate how to quantify the direction-specific interaction forces for a given pair of interacting oriented nanocrystal faces. The methods are fully transferrable to other minerals of interest, such as the apatites constituting bone minerals. This allows researchers across many fields to measure and understand particle-based crystallization processes.
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Affiliation(s)
- Xin Zhang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, USA.
| | - Yang He
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jia Liu
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Mark E Bowden
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Libor Kovarik
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Scott X Mao
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA, USA
| | - Chongmin Wang
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, USA
| | - James J De Yoreo
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Kevin M Rosso
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, USA.
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Han Y, Sinnwell MA, Teat SJ, Sushko ML, Bowden ME, Miller QRS, Schaef HT, Liu L, Nie Z, Liu J, Thallapally PK. Desulfurization Efficiency Preserved in a Heterometallic MOF: Synthesis and Thermodynamically Controlled Phase Transition. Adv Sci (Weinh) 2019; 6:1802056. [PMID: 30989028 PMCID: PMC6446612 DOI: 10.1002/advs.201802056] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 01/09/2019] [Indexed: 06/09/2023]
Abstract
Efficient removal of heterocyclic organosulfur compounds from fuels can relieve increasingly serious environmental problems (e.g., gas exhaust contaminants triggering the formation of acid rain that can damage fragile ecological systems). Toward this end, novel metal-organic frameworks (MOFs)-based sorbent materials are designed and synthesized with distinct hard and soft metal building units, specifically {[Yb6Cu12(OH)4(PyC)12(H2O)36]·(NO3)14·xS} n (QUST-81) and {[Yb4O(H2O)4Cu8(OH)8/3(PyC)8(HCOO)4]·(NO3)10/3·xS} n (QUST-82), where H2PyC = 4-Pyrazolecarboxylic acid. Exploiting the hard/soft duality, it is shown that the more stable QUST-82 can preserve desulfurization efficiency in the presence of competing nitrogen-containing contaminate. In addition, thermodynamically controlled single-crystal-to-single-crystal (SC-SC) phase transition is uncovered from QUST-81 to QUST-82, and in turn, mechanistic features are probed via X-ray diffraction, inductively coupled plasma atomic emission spectroscopy, and ab initio molecular dynamics simulations.
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Affiliation(s)
- Yi Han
- Key Laboratory of Eco‐Chemical EngineeringCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao266042P. R. China
- Pacific Northwest National LaboratoryRichlandWA99352USA
| | | | - Simon J. Teat
- Advanced Light SourceLawrence Berkeley National LaboratoryBerkeleyCA94720USA
| | | | | | | | | | - Lili Liu
- Pacific Northwest National LaboratoryRichlandWA99352USA
| | - Zimin Nie
- Pacific Northwest National LaboratoryRichlandWA99352USA
| | - Jun Liu
- Pacific Northwest National LaboratoryRichlandWA99352USA
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37
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Wang L, Stoerzinger KA, Chang L, Yin X, Li Y, Tang CS, Jia E, Bowden ME, Yang Z, Abdelsamie A, You L, Guo R, Chen J, Rusydi A, Wang J, Chambers SA, Du Y. Strain Effect on Oxygen Evolution Reaction Activity of Epitaxial NdNiO 3 Thin Films. ACS Appl Mater Interfaces 2019; 11:12941-12947. [PMID: 30834739 DOI: 10.1021/acsami.8b21301] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Epitaxial strain can cause both lattice distortion and oxygen nonstoichiometry, effects that are strongly coupled at heterojunctions of complex nickelate oxides. Here we decouple these structural and chemical effects on the oxygen evolution reaction (OER) by using a set of coherently strained epitaxial NdNiO3 films. We show that within the regime where oxygen vacancies (VO) are negligible, compressive strain is favorable for the OER whereas tensile strain is unfavorable; the former induces orbital splitting, resulting in a higher occupancy in the d3 z2- r2 orbital and weaker Ni-O chemisorption. However, when the tensile strain is sufficiently large to promote VO formation, an increase in the OER is also observed. The partial reduction of Ni3+ to Ni2+ due to VO makes the eg occupancy slightly larger than unity, which is thought to account for the increased OER activity. Our work highlights that epitaxial-strain-induced lattice distortion and VO generation can be individually or collectively exploited to tune OER activity, which is important for the predictive synthesis of high-performance electrocatalysts.
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Affiliation(s)
- Le Wang
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Kelsey A Stoerzinger
- School of Chemical, Biological, and Environmental Engineering , Oregon State University , Corvallis , Oregon 97331 , United States
| | - Lei Chang
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Xinmao Yin
- Department of Physics, Faculty of Science , National University of Singapore , Singapore 117542 , Singapore
| | - Yangyang Li
- Department of Material Science & Engineering , National University of Singapore , Singapore 117575 , Singapore
| | - Chi Sin Tang
- NUS Graduate School for Integrative Sciences and Engineering , National University of Singapore , Singapore 117456 , Singapore
| | - Endong Jia
- The Key Laboratory of Solar Thermal Energy and Photovoltaic System, Institute of Electrical Engineering , Chinese Academy of Science , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100190 , China
| | | | | | - Amr Abdelsamie
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Lu You
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Rui Guo
- Department of Material Science & Engineering , National University of Singapore , Singapore 117575 , Singapore
| | - Jingsheng Chen
- Department of Material Science & Engineering , National University of Singapore , Singapore 117575 , Singapore
| | - Andrivo Rusydi
- Department of Physics, Faculty of Science , National University of Singapore , Singapore 117542 , Singapore
| | - Junling Wang
- School of Materials Science and Engineering , Nanyang Technological University , Singapore 639798 , Singapore
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38
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Nune SK, Lao DB, Bowden ME, Schaef HT, Vemuri RS, Motkuri RK, McGrail BP. Investigation of reactive intermediates during the synthesis of di-n-butylmagnesium. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.01.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Garcellano RC, Moinuddin SGA, Young RP, Zhou M, Bowden ME, Renslow RS, Yesiltepe Y, Thomas DG, Colby SM, Chouinard CD, Nagy G, Attah IK, Ibrahim YM, Ma R, Franzblau SG, Lewis NG, Aguinaldo AM, Cort JR. Isolation of Tryptanthrin and Reassessment of Evidence for Its Isobaric Isostere Wrightiadione in Plants of the Wrightia Genus. J Nat Prod 2019; 82:440-448. [PMID: 30295480 DOI: 10.1021/acs.jnatprod.8b00567] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A series of Wrightia hanleyi extracts was screened for activity against Mycobacterium tuberculosis H37Rv. One active fraction contained a compound that initially appeared to be either the isoflavonoid wrightiadione or the alkaloid tryptanthrin, both of which have been previously reported in other Wrightia species. Characterization by NMR and MS, as well as evaluation of the literature describing these compounds, led to the conclusion that wrightiadione (1) was misidentified in the first report of its isolation from W. tomentosa in 1992 and again in 2015 when reported in W. pubescens and W. religiosa. Instead, the molecule described in these reports and in the present work is almost certainly the isobaric (same nominal mass) and isosteric (same number of atoms, valency, and shape) tryptanthrin (2), a well-known quinazolinone alkaloid found in a variety of plants including Wrightia species. Tryptanthrin (2) is also accessible synthetically via several routes and has been thoroughly characterized. Wrightiadione (1) has been synthesized and characterized and may have useful biological activity; however, this compound can no longer be said to be known to exist in Nature. To our knowledge, this misidentification of wrightiadione (1) has heretofore been unrecognized.
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Affiliation(s)
- Rhea C Garcellano
- Graduate School , University of Santo Tomas , Manila 1015 , Philippines
- Palawan State University , Tiniguiban Heights, Puerto Princesa City 5300 , Palawan , Philippines
- Institute of Biological Chemistry , Washington State University , Pullman , Washington 99164-6340 , United States
| | - Syed G A Moinuddin
- Institute of Biological Chemistry , Washington State University , Pullman , Washington 99164-6340 , United States
| | - Robert P Young
- Earth and Biological Sciences Directorate , Pacific Northwest National Laboratory , Richland , Washington 99354 , United States
| | - Mowei Zhou
- Earth and Biological Sciences Directorate , Pacific Northwest National Laboratory , Richland , Washington 99354 , United States
| | - Mark E Bowden
- Earth and Biological Sciences Directorate , Pacific Northwest National Laboratory , Richland , Washington 99354 , United States
| | - Ryan S Renslow
- Earth and Biological Sciences Directorate , Pacific Northwest National Laboratory , Richland , Washington 99354 , United States
| | - Yasemin Yesiltepe
- Earth and Biological Sciences Directorate , Pacific Northwest National Laboratory , Richland , Washington 99354 , United States
| | - Dennis G Thomas
- Earth and Biological Sciences Directorate , Pacific Northwest National Laboratory , Richland , Washington 99354 , United States
| | - Sean M Colby
- Earth and Biological Sciences Directorate , Pacific Northwest National Laboratory , Richland , Washington 99354 , United States
| | - Christopher D Chouinard
- Earth and Biological Sciences Directorate , Pacific Northwest National Laboratory , Richland , Washington 99354 , United States
| | - Gabe Nagy
- Earth and Biological Sciences Directorate , Pacific Northwest National Laboratory , Richland , Washington 99354 , United States
| | - Isaac K Attah
- Earth and Biological Sciences Directorate , Pacific Northwest National Laboratory , Richland , Washington 99354 , United States
| | - Yehia M Ibrahim
- Earth and Biological Sciences Directorate , Pacific Northwest National Laboratory , Richland , Washington 99354 , United States
| | - Rui Ma
- Institute for Tuberculosis Research, College of Pharmacy , University of Illinois at Chicago , Chicago , Illinois 60612 , United States
| | - Scott G Franzblau
- Institute for Tuberculosis Research, College of Pharmacy , University of Illinois at Chicago , Chicago , Illinois 60612 , United States
| | - Norman G Lewis
- Institute of Biological Chemistry , Washington State University , Pullman , Washington 99164-6340 , United States
| | - Alicia M Aguinaldo
- Graduate School , University of Santo Tomas , Manila 1015 , Philippines
- Phytochemistry Laboratory, Research Center for the Natural and Applied Sciences , University of Santo Tomas , Manila 1015 , Philippines
| | - John R Cort
- Institute of Biological Chemistry , Washington State University , Pullman , Washington 99164-6340 , United States
- Earth and Biological Sciences Directorate , Pacific Northwest National Laboratory , Richland , Washington 99354 , United States
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40
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Sanchez-Garcia L, Fernandez-Martinez MA, García-Villadangos M, Blanco Y, Cady SL, Hinman N, Bowden ME, Pointing SB, Lee KC, Warren-Rhodes K, Lacap-Bugler D, Cabrol NA, Parro V, Carrizo D. Microbial Biomarker Transition in High-Altitude Sinter Mounds From El Tatio (Chile) Through Different Stages of Hydrothermal Activity. Front Microbiol 2019; 9:3350. [PMID: 30697206 PMCID: PMC6340942 DOI: 10.3389/fmicb.2018.03350] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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: 09/21/2018] [Accepted: 12/31/2018] [Indexed: 01/22/2023] Open
Abstract
Geothermal springs support microbial communities at elevated temperatures in an ecosystem with high preservation potential that makes them interesting analogs for early evolution of the biogeosphere. The El Tatio geysers field in the Atacama Desert has astrobiological relevance due to the unique occurrence of geothermal features with steep hydrothermal gradients in an otherwise high altitude, hyper-arid environment. We present here results of our multidisciplinary field and molecular study of biogeochemical evidence for habitability and preservation in silica sinter at El Tatio. We sampled three morphologically similar geyser mounds characterized by differences in water activity (i.e., episodic liquid water, steam, and inactive geyser lacking hydrothermal activity). Multiple approaches were employed to determine (past and present) biological signatures and dominant metabolism. Lipid biomarkers indicated relative abundance of thermophiles (dicarboxylic acids) and sulfate reducing bacteria (branched carboxylic acids) in the sinter collected from the liquid water mound; photosynthetic microorganisms such as cyanobacteria (alkanes and isoprenoids) in the steam sinter mound; and archaea (squalane and crocetane) as well as purple sulfur bacteria (cyclopropyl acids) in the dry sinter from the inactive geyser. The three sinter structures preserved biosignatures representative of primary (thermophilic) and secondary (including endoliths and environmental contaminants) microbial communities. Sequencing of environmental 16S rRNA genes and immuno-assays generally corroborated the lipid-based microbial identification. The multiplex immunoassays and the compound-specific isotopic analysis of carboxylic acids, alkanols, and alkanes indicated that the principal microbial pathway for carbon fixation in the three sinter mounds was through the Calvin cycle, with a relative larger contribution of the reductive acetyl-CoA pathway in the dry system. Other inferred metabolic traits varied from the liquid mound (iron and sulfur chemistry), to the steam mound (nitrogen cycle), to the dry mound (perchlorate reduction). The combined results revealed different stages of colonization that reflect differences in the lifetime of the mounds, where primary communities dominated the biosignatures preserved in sinters from the still active geysers (liquid and steam mounds), in contrast to the surviving metabolisms and microbial communities at the end of lifetime of the inactive geothermal mound.
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Affiliation(s)
| | | | | | | | - Sherry L Cady
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, United States
| | - Nancy Hinman
- Department of Geosciences, University of Montana, Missoula, MT, United States
| | - Mark E Bowden
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, United States
| | - Stephen B Pointing
- Yale-NUS College, National University of Singapore, Singapore, Singapore
| | - Kevin C Lee
- School of Science, Auckland University of Technology, Auckland, New Zealand
| | - Kimberly Warren-Rhodes
- SETI Institute, Mountain View, CA, United States.,NASA Ames Research Center, Moffett Field, CA, United States
| | | | - Nathalie A Cabrol
- SETI Institute, Mountain View, CA, United States.,NASA Ames Research Center, Moffett Field, CA, United States
| | - Victor Parro
- Centro de Astrobiología (CSIC-INTA), Madrid, Spain
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41
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Miller QRS, Kaszuba JP, Schaef HT, Bowden ME, McGrail BP, Rosso KM. Anomalously low activation energy of nanoconfined MgCO3 precipitation. Chem Commun (Camb) 2019; 55:6835-6837. [DOI: 10.1039/c9cc01337g] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Experimental study of nanoconfined MgCO3 nucleation and growth processes reveals elevated kinetics due to less strongly hydrated Mg2+.
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Affiliation(s)
- Quin R. S. Miller
- Department of Geology and Geophysics
- University of Wyoming
- Laramie
- USA
- Physical and Computational Sciences Directorate
| | - John P. Kaszuba
- Department of Geology and Geophysics
- University of Wyoming
- Laramie
- USA
- School of Energy Resources
| | - Herbert T. Schaef
- Physical and Computational Sciences Directorate
- Pacific Northwest National Laboratory
- Richland
- USA
| | - Mark E. Bowden
- William R. Wiley Environmental Molecular Sciences Laboratory
- Pacific Northwest National Laboratory
- Richland
- USA
| | - B. Peter McGrail
- Energy and Environment Directorate
- Pacific Northwest National Laboratory
- Richland
- USA
| | - Kevin M. Rosso
- Physical and Computational Sciences Directorate
- Pacific Northwest National Laboratory
- Richland
- USA
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Yang Z, Ong PV, He Y, Wang L, Bowden ME, Xu W, Droubay TC, Wang C, Sushko PV, Du Y. Direct Visualization of Li Dendrite Effect on LiCoO 2 Cathode by In Situ TEM. Small 2018; 14:e1803108. [PMID: 30397995 DOI: 10.1002/smll.201803108] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 09/24/2018] [Indexed: 06/08/2023]
Abstract
Nonuniform and highly localized Li dendrites are known to cause deleterious and, in many cases, catastrophic effects on the performance of rechargeable Li batteries. However, the mechanisms of cathode failures upon contact with Li metal are far from clear. In this study, using in situ transmission electron microscopy, the interaction of Li metal with well-defined, epitaxial thin films of LiCoO2 , the most widely used cathode material, is directly visualized at an atomic scale. It is shown that a spontaneous and prompt chemical reaction is triggered once Li contact is made, leading to expansion and pulverization of LiCoO2 and ending with the final reaction products of Li2 O and Co metal. A topotactic phase transition is identified close to the reaction front, resulting in the formation of CoO as a metastable intermediate. Dynamic structural and chemical imaging, in combination with ab initio simulations, reveal that a high density of grain and antiphase boundaries is formed at the reaction front, which are critical for enabling the short-range topotactic reactions and long-range Li propagation. The fundamental insights are of general importance in mitigating Li dendrites related issues and guiding the design principle for more robust energy materials.
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Affiliation(s)
- Zhenzhong Yang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Phuong-Vu Ong
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Yang He
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Le Wang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Mark E Bowden
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Wu Xu
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Timothy C Droubay
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Chongmin Wang
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Peter V Sushko
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Yingge Du
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
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43
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Saslow SA, Um W, Pearce CI, Bowden ME, Engelhard MH, Lukens WL, Kim DS, Schweiger MJ, Kruger AA. Cr(VI) Effect on Tc-99 Removal from Hanford Low-Activity Waste Simulant by Ferrous Hydroxide. Environ Sci Technol 2018; 52:11752-11759. [PMID: 30221934 DOI: 10.1021/acs.est.8b03314] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Here, Cr(VI) effects on Tc-immobilization by Fe(OH)2(s) are investigated while assessing Fe(OH)2(s) as a potential treatment method for Hanford low-activity waste destined for vitrification. Batch studies using simulated low-activity waste indicate that Tc(VII) and Cr(VI) removal is contingent on reduction to Tc(IV) and Cr(III). Furthermore, complete removal of both Cr and Tc depends on the amount of Fe(OH)2(s) present, where complete Cr and Tc removal requires more Fe(OH)2(s) (∼200 g/L of simulant), than removing Cr alone (∼50 g/L of simulant). XRD analysis suggests that Fe(OH)2(s) reaction and transformation in the simulant produces mostly goethite (α-FeOOH), where Fe(OH)2(s) transformation to goethite rather than magnetite is likely due to the simulant chemistry, which includes high levels of nitrite and other constituents. Once reduced, a fraction of Cr(III) and Tc(IV) substitute for octahedral Fe(III) within the goethite crystal lattice as supported by XPS, XANES, and/or EXAFS results. The remaining Cr(III) forms oxide and/or hydroxide phases, whereas Tc(IV) not fully incorporated into goethite persists as either adsorbed or partially incorporated Tc(IV)-oxide species. As such, to fully incorporate Tc(IV) into the goethite crystal structure, additional Fe(OH)2(s) (>200 g/L of simulant) may be required.
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Affiliation(s)
- Sarah A Saslow
- Pacific Northwest National Laboratory , 902 Battelle Blvd , Richland , Washington , 99352 , United States
| | - Wooyong Um
- Pacific Northwest National Laboratory , 902 Battelle Blvd , Richland , Washington , 99352 , United States
| | - Carolyn I Pearce
- Pacific Northwest National Laboratory , 902 Battelle Blvd , Richland , Washington , 99352 , United States
| | - Mark E Bowden
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory , Richland , Washington , 99354 , United States
| | - Mark H Engelhard
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory , Richland , Washington , 99354 , United States
| | - Wayne L Lukens
- Lawrence Berkeley National Laboratory , 1 Cyclotron Rd , Berkeley , California , 94720 United States
| | - Dong-Sang Kim
- Pacific Northwest National Laboratory , 902 Battelle Blvd , Richland , Washington , 99352 , United States
| | - Michael J Schweiger
- Pacific Northwest National Laboratory , 902 Battelle Blvd , Richland , Washington , 99352 , United States
| | - Albert A Kruger
- United States Department of Energy, Office of River Protection , P.O. Box 450, Richland , Washington 99352 , United States
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44
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Lawter AR, Garcia WL, Kukkadapu RK, Qafoku O, Bowden ME, Saslow SA, Qafoku NP. Technetium and iodine aqueous species immobilization and transformations in the presence of strong reductants and calcite-forming solutions: Remedial action implications. Sci Total Environ 2018; 636:588-595. [PMID: 29723831 DOI: 10.1016/j.scitotenv.2018.04.240] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 04/17/2018] [Accepted: 04/17/2018] [Indexed: 06/08/2023]
Abstract
At the Hanford Site in southeastern Washington, discharge of radionuclide laden liquid wastes resulted in vadose zone contamination, providing a continuous source of these contaminants to groundwater. The presence of multiple contaminants (i.e., 99Tc and 129I) increases the complexity of finding viable remediation technologies to sequester contaminants in situ and protect groundwater. Although previous studies have shown the efficiency of zero valent iron (ZVI) and sulfur modified iron (SMI) in reducing mobile Tc(VII) to immobile Tc(IV) and iodate incorporation into calcite, the coupled effects from simultaneously using these remedial technologies have not been previously studied. In this first-of-a-kind laboratory study, we used reductants (ZVI or SMI) and calcite-forming solutions to simultaneously remove aqueous Tc(VII) and iodate via reduction and incorporation, respectively. The results confirmed that Tc(VII) was rapidly removed from the aqueous phase via reduction to Tc(IV). Most of the aqueous iodate was transformed to iodide faster than incorporation into calcite occurred, and therefore the I remained in the aqueous phase. These results suggested that this remedial pathway is not efficient in immobilizing iodate when reductants are present. Other experiments suggested that iodate removal via calcite precipitation should occur prior to adding reductants for Tc(VII) removal. When microbes were included in the tests, there was no negative impact on the microbial population but changes in the makeup of the microbial community were observed. These microbial community changes may have an impact on remediation efforts in the long-term that could not be seen in a short-term study. The results underscore the importance of identifying interactions between natural attenuation pathways and remediation technologies that only target individual contaminants.
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Affiliation(s)
- Amanda R Lawter
- Pacific Northwest National Laboratory (PNNL), 902 Battelle Boulevard, Richland, WA 99352, United States.
| | - Whitney L Garcia
- Pacific Northwest National Laboratory (PNNL), 902 Battelle Boulevard, Richland, WA 99352, United States
| | - Ravi K Kukkadapu
- Pacific Northwest National Laboratory (PNNL), 902 Battelle Boulevard, Richland, WA 99352, United States
| | - Odeta Qafoku
- Pacific Northwest National Laboratory (PNNL), 902 Battelle Boulevard, Richland, WA 99352, United States
| | - Mark E Bowden
- Pacific Northwest National Laboratory (PNNL), 902 Battelle Boulevard, Richland, WA 99352, United States
| | - Sarah A Saslow
- Pacific Northwest National Laboratory (PNNL), 902 Battelle Boulevard, Richland, WA 99352, United States
| | - Nikolla P Qafoku
- Pacific Northwest National Laboratory (PNNL), 902 Battelle Boulevard, Richland, WA 99352, United States
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45
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Graham TR, Dembowski M, Martinez-Baez E, Zhang X, Jaegers NR, Hu J, Gruszkiewicz MS, Wang HW, Stack AG, Bowden ME, Delegard CH, Schenter GK, Clark AE, Clark SB, Felmy AR, Rosso KM, Pearce CI. In Situ 27Al NMR Spectroscopy of Aluminate in Sodium Hydroxide Solutions above and below Saturation with Respect to Gibbsite. Inorg Chem 2018; 57:11864-11873. [PMID: 30036042 DOI: 10.1021/acs.inorgchem.8b00617] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Trent R. Graham
- The Voiland School of Chemical and Biological Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Mateusz Dembowski
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Ernesto Martinez-Baez
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Xin Zhang
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Nicholas R. Jaegers
- The Voiland School of Chemical and Biological Engineering, Washington State University, Pullman, Washington 99164, United States
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Jianzhi Hu
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | | | - Hsiu-Wen Wang
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Andrew G. Stack
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Mark E. Bowden
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | | | - Gregory K. Schenter
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Aurora E. Clark
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Sue B. Clark
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Andrew R. Felmy
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Kevin M. Rosso
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Carolyn I. Pearce
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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46
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Miller QRS, Schaef HT, Kaszuba JP, Qiu L, Bowden ME, McGrail BP. Tunable Manipulation of Mineral Carbonation Kinetics in Nanoscale Water Films via Citrate Additives. Environ Sci Technol 2018; 52:7138-7148. [PMID: 29874053 DOI: 10.1021/acs.est.8b00438] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We explored the influence of a model organic ligand on mineral carbonation in nanoscale interfacial water films by conducting five time-resolved in situ X-ray diffraction (XRD) experiments at 50 °C. Forsterite was exposed to water-saturated supercritical carbon dioxide (90 bar) that had been equilibrated with 0-0.5 m citrate (C6H5O7-3) solutions. The experimental results demonstrated that greater concentrations of citrate in the nanoscale interfacial water film promoted the precipitation of magnesite (MgCO3) relative to nesquehonite (MgCO3·3H2O). At the highest concentrations tested, magnesite nucleation and growth were inhibited, lowering the carbonation rate constant from 9.1 × 10-6 to 3.6 × 10-6 s-1. These impacts of citrate were due to partial dehydration of Mg2+(aq) and the adsorption of citrate onto nuclei and magnesite surfaces. This type of information may be used to predict and tailor subsurface mineralization rates and pathways.
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Affiliation(s)
- Quin R S Miller
- Department of Geology and Geophysics , University of Wyoming , 1000 E. University Avenue , Laramie , Wyoming 82071 , United States
| | - Herbert T Schaef
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, MS K8-98, Richland , Washington 99352 , United States
| | - John P Kaszuba
- Department of Geology and Geophysics , University of Wyoming , 1000 E. University Avenue , Laramie , Wyoming 82071 , United States
- School of Energy Resources , University of Wyoming , 1000 E. University Avenue , Laramie , Wyoming 82071 , United States
| | - Lin Qiu
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Pudong Xinqu, Shanghai , China 201203
| | - Mark E Bowden
- Environmental Molecular Sciences Laboratory , Pacific Northwest National Laboratory , P.O. Box 999, MS K8-98, Richland , Washington 99352 , United States
| | - Bernard P McGrail
- Energy and Environment Directorate , Pacific Northwest National Laboratory , P.O. Box 999, MS K8-98, Richland , Washington 99352 , United States
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47
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Zhang KHL, Li G, Spurgeon SR, Wang L, Yan P, Wang Z, Gu M, Varga T, Bowden ME, Zhu Z, Wang C, Du Y. Creation and Ordering of Oxygen Vacancies at WO 3-δ and Perovskite Interfaces. ACS Appl Mater Interfaces 2018; 10:17480-17486. [PMID: 29694010 DOI: 10.1021/acsami.8b03278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Changes in the structure and composition resulting from oxygen deficiency can strongly impact the physical and chemical properties of transition-metal oxides, which may lead to new functionalities for novel electronic devices. Oxygen vacancies (VO) can be readily formed to accommodate the lattice mismatch during epitaxial thin film growth. In this paper, the effects of substrate strain and oxidizing power on the creation and distribution of VO in WO3-δ thin films are investigated in detail. An 18O2 isotope-labeled time-of-flight secondary-ion mass spectrometry study reveals that WO3-δ films grown on SrTiO3 substrates display a significantly larger oxygen vacancy gradient along the growth direction compared to those grown on LaAlO3 substrates. This result is corroborated by scanning transmission electron microscopy imaging, which reveals a large number of defects close to the interface to accommodate interfacial tensile strain, leading to the ordering of VO and the formation of semi-aligned Magnéli phases. The strain is gradually released and a tetragonal phase with much better crystallinity is observed at the film/vacuum interface. The changes in the structure resulting from oxygen defect creation are shown to have a direct impact on the electronic and optical properties of the films.
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Affiliation(s)
- Kelvin H L Zhang
- College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China
| | - Guoqiang Li
- Key Laboratory of Photovoltaic Materials of Henan Province, School of Physics & Electronics , Henan University , Kaifeng 475004 , P. R. China
| | | | | | - Pengfei Yan
- Institute of Microstructure and Properties of Advanced Materials , Beijing University of Technolgoy , Beijing 100124 , P. R. China
| | - Zhaoying Wang
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation , Tsinghua University , Beijing 100084 , P. R. China
| | - Meng Gu
- Department of Materials Science and Engineering , Southern Unviersity of Science and Technology , Shenzhen , Guangdong 518055 , P. R. China
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48
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Kaspar TC, Hong S, Bowden ME, Varga T, Yan P, Wang C, Spurgeon SR, Comes RB, Ramuhalli P, Henager CH. Tuning piezoelectric properties through epitaxy of La 2Ti 2O 7 and related thin films. Sci Rep 2018; 8:3037. [PMID: 29445173 PMCID: PMC5813004 DOI: 10.1038/s41598-018-21009-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 09/27/2017] [Accepted: 01/12/2018] [Indexed: 11/16/2022] Open
Abstract
Current piezoelectric sensors and actuators are limited to operating temperatures less than ~200 °C due to the low Curie temperature of the piezoelectric material. Strengthening the piezoelectric coupling of high-temperature piezoelectric materials, such as La2Ti2O7 (LTO), would allow sensors to operate across a broad temperature range. The crystalline orientation and piezoelectric coupling direction of LTO thin films can be controlled by epitaxial matching to SrTiO3(001), SrTiO3(110), and rutile TiO2(110) substrates via pulsed laser deposition. The structure and phase purity of the films are investigated by x-ray diffraction and scanning transmission electron microscopy. Piezoresponse force microscopy is used to measure the in-plane and out-of-plane piezoelectric coupling in the films. The strength of the out-of-plane piezoelectric coupling can be increased when the piezoelectric direction is rotated partially out-of-plane via epitaxy. The strongest out-of-plane coupling is observed for LTO/STO(001). Deposition on TiO2(110) results in epitaxial La2/3TiO3, an orthorhombic perovskite of interest as a microwave dielectric material and an ion conductor. La2/3TiO3 can be difficult to stabilize in bulk form, and epitaxial stabilization on TiO2(110) is a promising route to realize La2/3TiO3 for both fundamental studies and device applications. Overall, these results confirm that control of the crystalline orientation of epitaxial LTO-based materials can govern the resulting functional properties.
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Affiliation(s)
- Tiffany C Kaspar
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, United States.
| | - Seungbum Hong
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois, 60439, United States.,Department of Materials Science and Engineering, KAIST, Daejeon, 34141, Republic of Korea
| | - Mark E Bowden
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, United States
| | - Tamas Varga
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, United States
| | - Pengfei Yan
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, United States
| | - Chongmin Wang
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, United States
| | - Steven R Spurgeon
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, United States
| | - Ryan B Comes
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, United States.,Department of Physics, Auburn University, Auburn, Alabama, 36849, United States
| | - Pradeep Ramuhalli
- National Security Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, United States
| | - Charles H Henager
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, United States
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49
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Asmussen RM, Pearce CI, Miller BW, Lawter AR, Neeway JJ, Lukens WW, Bowden ME, Miller MA, Buck EC, Serne RJ, Qafoku NP. Getters for improved technetium containment in cementitious waste forms. J Hazard Mater 2018; 341:238-247. [PMID: 28787657 DOI: 10.1016/j.jhazmat.2017.07.055] [Citation(s) in RCA: 6] [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] [Received: 03/01/2017] [Revised: 07/03/2017] [Accepted: 07/22/2017] [Indexed: 06/07/2023]
Abstract
A cementitious waste form, Cast Stone, is a possible candidate technology for the immobilization of low activity nuclear waste (LAW) at the Hanford site. This work focuses on the addition of getter materials to Cast Stone that can sequester Tc from the LAW, and in turn, lower Tc release from the Cast Stone. Two getters which produce different products upon sequestering Tc from LAW were tested: Sn(II) apatite (Sn-A) that removes Tc as a Tc(IV)-oxide and potassium metal sulfide (KMS-2) that removes Tc as a Tc(IV)-sulfide species, allowing for a comparison of stability of the form of Tc upon entering the waste form. The Cast Stone with KMS-2 getter had the best performance with addition equivalent to ∼0.08wt% of the total waste form mass. The observed diffusion (Dobs) of Tc decreased from 4.6±0.2×10-12cm2/s for Cast Stone that did not contain a getter to 5.4±0.4×10-13cm2/s for KMS-2 containing Cast Stone. It was found that Tc-sulfide species are more stable against re-oxidation within getter containing Cast Stone compared with Tc-oxide and is the origin of the decrease in Tc Dobs when using the KMS-2.
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Affiliation(s)
- R Matthew Asmussen
- Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA, USA.
| | - Carolyn I Pearce
- Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA, USA
| | - Brian W Miller
- College of Optical Sciences, The University of Arizona, 1630 E University Blvd, Tucson, AZ, USA
| | - Amanda R Lawter
- Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA, USA
| | - James J Neeway
- Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA, USA
| | - Wayne W Lukens
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road Berkeley, CA, USA
| | - Mark E Bowden
- Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA, USA
| | - Micah A Miller
- Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA, USA
| | - Edgar C Buck
- Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA, USA
| | - R Jeffery Serne
- Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA, USA
| | - Nikolla P Qafoku
- Pacific Northwest National Laboratory, 902 Battelle Blvd, Richland, WA, USA
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50
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Zhang X, Shen Z, Liu J, Kerisit SN, Bowden ME, Sushko ML, De Yoreo JJ, Rosso KM. Direction-specific interaction forces underlying zinc oxide crystal growth by oriented attachment. Nat Commun 2017; 8:835. [PMID: 29018200 PMCID: PMC5635138 DOI: 10.1038/s41467-017-00844-6] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [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: 01/10/2017] [Accepted: 07/28/2017] [Indexed: 11/21/2022] Open
Abstract
Crystallization by particle attachment is impacting our understanding of natural mineralization processes and holds promise for novel materials design. When particles assemble in crystallographic alignment, expulsion of the intervening solvent and particle coalescence are enabled by near-perfect co-alignment via interparticle forces that remain poorly quantified. Here we report measurement and simulation of these nanoscale aligning forces for the ZnO(0001)-ZnO(000\documentclass[12pt]{minimal}
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\begin{document}$$\bar 1$$\end{document}1¯) system in aqueous solution. Dynamic force spectroscopy using nanoengineered single crystal probes reveals an attractive force with 60o rotational periodicity. Calculated distance and orientation-dependent potentials of mean force show several attractive free energy wells distinguished by numbers of intervening water layers, which reach a minimum when aligned. The calculated activation energy to separate the attractively bound solvated interfaces perfectly reproduces the measured 60o periodicity, revealing the key role of intervening water structuring as a basis to generate the interparticle torque that completes alignment and enables coalescence. Crystal growth is a fundamental process, important in a wide range of fields, but the interparticle forces responsible for molecule alignment are not well understood. Here, the authors measure the alignment forces in ZnO using dynamic force spectroscopy, highlighting the role of intervening water molecules.
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Affiliation(s)
- X Zhang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, 99352, WA, USA
| | - Z Shen
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, 99352, WA, USA
| | - J Liu
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, 99352, WA, USA
| | - S N Kerisit
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, 99352, WA, USA
| | - M E Bowden
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, 99352, WA, USA
| | - M L Sushko
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, 99352, WA, USA
| | - J J De Yoreo
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, 99352, WA, USA
| | - K M Rosso
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, 99352, WA, USA.
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