1
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Scher JA, Foley B, Murialdo M, Hao Y, Heo TW, Weitzner SE, Aubry S, Kroonblawd MP. Predicted Fracture Tendency of Naturally Occurring Aluminum Surface Coatings under Tensile Loading. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38703131 DOI: 10.1021/acsami.3c18840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2024]
Abstract
Naturally occurring coatings on aluminum metal, such as its oxide or hydroxide, serve to protect the material from corrosion. Understanding the conditions under which these coatings mechanically fail is therefore expected to be an important aspect of predictive models for aluminum component lifetimes. To this end, we develop and apply a molecular dynamics (MD) modeling framework for conducting tension tests that is capable of isolating factors governing the mechanical strength as a function of coating chemistry, defect morphology, and variables associated with the loading path. We consider two representative materials, including γ-Al2O3 and γ-Al(OH)3 (i.e., oxide and hydroxide), both of which form readily as aluminum surface coatings. Our results indicate that defects have a significant bearing on the strength of aluminum oxide, with grain boundaries serving to reduce the strain at failure from εzz = 0.300 to 0.219, relative to perfect single crystal. Our simulations also predict that porosity lowers the elastic stiffness and yield strength of the oxide. Relative to perfect crystal, we find porosity factors of 5%, 10% and 20% decrease the yield stress by 26%, 36% and 53%, respectively. MD predicts that perfect hydroxide and oxide single crystal have respective strains at failure of 0.08 and 0.31 under tensile uniaxial strain loading, and that the corresponding yield stresses are respectively 1.6 and 11.1 GPa. These data indicate that the hydroxide is substantially more susceptible to mechanical failure than the oxide. Our results, coupled with literature findings that indicate hot and humid conditions favor formation of hydroxide and defective oxide coatings, indicate the potential for a complicated dependence of aluminum corrosion susceptibility and stress corrosion cracking on aging history.
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Affiliation(s)
- Jeremy A Scher
- Lawrence Livermore National Laboratory, Livermore, California 94550 United States
| | - Brandon Foley
- Lawrence Livermore National Laboratory, Livermore, California 94550 United States
| | - Maxwell Murialdo
- Lawrence Livermore National Laboratory, Livermore, California 94550 United States
| | - Yue Hao
- Lawrence Livermore National Laboratory, Livermore, California 94550 United States
| | - Tae Wook Heo
- Lawrence Livermore National Laboratory, Livermore, California 94550 United States
| | - Stephen E Weitzner
- Lawrence Livermore National Laboratory, Livermore, California 94550 United States
| | - Sylvie Aubry
- Lawrence Livermore National Laboratory, Livermore, California 94550 United States
| | - Matthew P Kroonblawd
- Lawrence Livermore National Laboratory, Livermore, California 94550 United States
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2
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Liu Y, McGuinness EK, Jean BC, Li Y, Ren Y, Rio BGD, Lively RP, Losego MD, Ramprasad R. Vapor-Phase Infiltration of Polymer of Intrinsic Microporosity 1 (PIM-1) with Trimethylaluminum (TMA) and Water: A Combined Computational and Experimental Study. J Phys Chem B 2022; 126:5920-5930. [PMID: 35920864 DOI: 10.1021/acs.jpcb.2c01928] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Vapor-phase infiltration, a postpolymerization modification process, has demonstrated the ability to create organic-inorganic hybrid membranes with excellent stability in organic solvents while maintaining critical membrane properties of high permeability and selectivity. However, the chemical reaction pathways that occur during VPI and their implications on the hybrid membrane stability are poorly understood. This paper combines in situ quartz crystal microbalance gravimetry (QCM) and ex situ chemical characterization with first-principles simulations at the atomic scale to study each processing step in the infiltration of polymer of intrinsic microporosity 1 (PIM-1) with trimethylaluminum (TMA) and its co-reaction with water vapor. Building upon results from in situ QCM experiments and SEM/EDX, which find TMA remains within PIM-1 even under long desorption times, density functional theory (DFT) simulations identify that an energetically stable coordination forms between the metal-organic precursor and PIM-1's nitrile functional group during the precursor exposure step of VPI. In the subsequent water vapor exposure step, the system undergoes a series of exothermic reactions to form the final hybrid membrane. DFT simulations indicate that these reaction pathways result in aluminum oxyhydroxide species consistent with ex situ XPS and FTIR characterization. Both NMR and DFT simulations suggest that the final aluminum structure is primarily 6-fold coordinated and that the aluminum is at least dimerized, if not further "polymerized". According to the simulations, coordination of the aluminum with at least one nitrile group from the PIM-1 appears to weaken significantly as the final inorganic structure emerges but remains present to enable the formation of the 6-fold coordination species. Water molecules are proposed to complete the coordination complex without further increasing the aluminum's oxidation state. This study provides new insights into the infiltration process and the chemical structure of the final hybrid membrane including support for the possible mechanism of solvent stability.
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Affiliation(s)
- Yifan Liu
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive NW, Atlanta, Georgia 30332, United States
| | - Emily K McGuinness
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive NW, Atlanta, Georgia 30332, United States
| | - Benjamin C Jean
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive NW, Atlanta, Georgia 30332, United States
| | - Yi Li
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive NW, Atlanta, Georgia 30332, United States
| | - Yi Ren
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive North West, Atlanta, Georgia 30332-0100, United States
| | - Beatriz G Del Rio
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive NW, Atlanta, Georgia 30332, United States
| | - Ryan P Lively
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive North West, Atlanta, Georgia 30332-0100, United States
| | - Mark D Losego
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive NW, Atlanta, Georgia 30332, United States
| | - Rampi Ramprasad
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive NW, Atlanta, Georgia 30332, United States
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3
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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] [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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4
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Luna CR, Reimers WG, Avena MJ, Juan A. Theoretical study of the octahedral substitution effect in delaminated pyrophyllite: physicochemical properties and applications. Phys Chem Chem Phys 2021; 23:14601-14607. [PMID: 34190255 DOI: 10.1039/d1cp01032h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have studied, using DFT calculations, some geometrical and electronic properties of delaminated pyrophyllite (D-P) and the corresponding layers that result from three isomorphic substitutions on octahedral sheets (Mg2+, Fe2+ and Fe3+). Bond lengths, layer thickness (dL), band gap (Eg), work function (WF), magnetic moment (μ), density of states and charge distributions are reported. These properties are important to control the behaviour of electronic devices. The results show that the layer thickness increases according to the ionic radius of the considered substituent. In the case of the three substitutions a reduction of the forbidden band is observed. Mg2+ induces a decrease in the Eg value of about 16.5% with respect to D-P, whereas for Fe this reduction is more significant due to the presence of trap states in the forbidden zone. For Fe2+ (Fe3+) the reduction in the Eg is around 62% (51%). Regarding the WF, our results showed that there is a decrease in its value after substitution. D-P has the highest WF value (8.15 eV), whereas the delaminated clay with Fe2+ has the lowest value (2.22 eV). Finally, D-P and D-P substituted with Mg2+ have a diamagnetic behaviour (μ = 0), whereas the presence of Fe2+ and Fe3+ induces a paramagnetic behaviour. The computed magnetic moment is 4 μB and 1 μB for D-P substituted with Fe2+ and Fe3+, respectively.
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Affiliation(s)
- Carla Romina Luna
- Instituto de Física del Sur (IFISUR, UNS-CONICET) and Departamento de Física, Universidad Nacional del Sur, Avenida Alem 1253, B8000CPB, Bahía Blanca, Argentina.
| | - Walter Guillermo Reimers
- Instituto de Física del Sur (IFISUR, UNS-CONICET) and Departamento de Física, Universidad Nacional del Sur, Avenida Alem 1253, B8000CPB, Bahía Blanca, Argentina.
| | - Marcelo Javier Avena
- Instituto de Química del Sur (INQUISUR, UNS-CONICET) and Departamento de Química, Universidad Nacional del Sur, Avenida Alem 1253, B8000CPB, Bahía Blanca, Argentina
| | - Alfredo Juan
- Instituto de Física del Sur (IFISUR, UNS-CONICET) and Departamento de Física, Universidad Nacional del Sur, Avenida Alem 1253, B8000CPB, Bahía Blanca, Argentina.
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5
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Hu H, Ma J, Hu Z, Yang J. Immobilization of dipyrenylphosphinic acid to boehmite: Fluorescent hybrid with weakened pyrene-aggregation. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.09.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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6
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Yun J, Zhu C, Wang Q, Hu Q, Yang G. Catalytic conversions of atmospheric sulfur dioxide and formation of acid rain over mineral dusts: Molecular oxygen as the oxygen source. CHEMOSPHERE 2019; 217:18-25. [PMID: 30396046 DOI: 10.1016/j.chemosphere.2018.10.201] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 10/26/2018] [Accepted: 10/29/2018] [Indexed: 06/08/2023]
Abstract
Sulfur dioxide (SO2) ranks as a major air pollutant and is likely to generate acid rain. When molecular oxygen is the oxygen source, the regular surfaces of gibbsite (one of the most abundant mineral dusts) show no reactivity for SO2 conversions to H2SO4, while the partially dehydrated (100) surface with coordination-unsaturated Al sites becomes catalytically effective. Because of the easy availability of molecular oxygen, results manifest that acid rain can form under all atmospheric conditions and may account for the high conversion ratio of atmospheric SO2. The (100) and (001) surfaces show divergent catalytic effects, and hydrolysis is always the rate-limiting step. Path A (hydrolysis and then oxidation) is preferred for (100) surface, whereas a third path with obviously lower activation barriers is presented for (001) surface, which is non-existent for (100) surface. Atomic oxygen originating from the dissociation of molecular oxygen is catalytically active for (100) surface, while the active site of (001) surface fails to be recovered, suggesting that SO2 conversions over gibbsite surfaces are facet-controlled. This work also offers an environmentally friendly route for production of H2SO4 (one of the essential compounds in chemical industry), directly using molecular oxygen as the oxygen source.
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Affiliation(s)
- Jiena Yun
- College of Resources and Environment & Chongqing Key Laboratory of Soil Multi-scale Interfacial Process, Southwest University, Chongqing 400715, China
| | - Chang Zhu
- College of Resources and Environment & Chongqing Key Laboratory of Soil Multi-scale Interfacial Process, Southwest University, Chongqing 400715, China
| | - Qian Wang
- College of Resources and Environment & Chongqing Key Laboratory of Soil Multi-scale Interfacial Process, Southwest University, Chongqing 400715, China
| | - Qiaoli Hu
- College of Resources and Environment & Chongqing Key Laboratory of Soil Multi-scale Interfacial Process, Southwest University, Chongqing 400715, China
| | - Gang Yang
- College of Resources and Environment & Chongqing Key Laboratory of Soil Multi-scale Interfacial Process, Southwest University, Chongqing 400715, China.
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7
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Cox CJ, Hovey B, Fornes TD, Khan SA. Reversible Structure Formation of Aluminum Trihydroxide (ATH) Dispersions in Polydimethylsiloxane (PDMS). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:237-247. [PMID: 30525656 DOI: 10.1021/acs.langmuir.8b03577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Aluminum trihydroxide/polydimethylsiloxane (ATH/PDMS) systems are often used as potting compounds in electronic assemblies to guard the electronics from shock, vibration, corrosive agents, and moisture. In this study, we use dynamic rheology and confocal/optical microscopy to understand the dramatic effects miniscule levels of water have on the microstructure and corresponding rheological behavior of PDMS filled with ATH. In the absence of water, PDMS containing 20 wt % ATH readily flows, exhibiting viscoelastic behavior with some weak particle flocculation. However, the addition of only 0.045 wt % water to the system results in the formation of a sample-spanning, self-supporting physical gel that exhibits an elastic modulus ( G') five orders of magnitude higher than the water-free system. A structure formation mechanism consisting of hydration layer formation followed by interparticle water bridging has been proposed to explain the observed behavior. Recovery of the original viscoelastic fluid is demonstrated by adding molecular sieves (e.g., zeolites) to the fully flocculated system. The recovery can likely be attributed to the adsorption of water by the sieves and the corresponding breakup of water bridges between the ATH particles. On the basis of the proposed mechanism, a variety of other polar and nonpolar solvents have been found to induce physical gelation in ATH/PDMS dispersions with gel modulus being related to the Hildebrand solubility parameter mismatch between the solvent and PDMS fluid.
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Affiliation(s)
- Christopher J Cox
- Department of Chemical & Biomolecular Engineering , North Carolina State University , Raleigh , North Carolina 27695-7905 , United States
- Lord Corporation , 111 Lord Dr , Cary , North Carolina 27511 , United States
| | - Brentley Hovey
- Department of Chemical & Biomolecular Engineering , North Carolina State University , Raleigh , North Carolina 27695-7905 , United States
- Lord Corporation , 111 Lord Dr , Cary , North Carolina 27511 , United States
| | - Timothy D Fornes
- Lord Corporation , 111 Lord Dr , Cary , North Carolina 27511 , United States
| | - Saad A Khan
- Department of Chemical & Biomolecular Engineering , North Carolina State University , Raleigh , North Carolina 27695-7905 , United States
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8
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Jiang YF, Liu CL, Xue J, Li P, Yu JG. Insights into the polymorphic transformation mechanism of aluminum hydroxide during carbonation of potassium aluminate solution. CrystEngComm 2018. [DOI: 10.1039/c7ce01656e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymorphic transformation from bayerite to gibbsite is discussed kinetically and structurally. Possibility of crossovers in Al(OH)3 polymorphs stability is investigated for the first time.
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Affiliation(s)
- You-Fa Jiang
- National Engineering Research Center for Integrated Utilization of Salt Lake Resource
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Cheng-Lin Liu
- National Engineering Research Center for Integrated Utilization of Salt Lake Resource
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Jin Xue
- National Engineering Research Center for Integrated Utilization of Salt Lake Resource
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Ping Li
- National Engineering Research Center for Integrated Utilization of Salt Lake Resource
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Jian-Guo Yu
- National Engineering Research Center for Integrated Utilization of Salt Lake Resource
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai
- China
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9
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Conroy M, Soltis JA, Wittman RS, Smith FN, Chatterjee S, Zhang X, Ilton ES, Buck EC. Importance of interlayer H bonding structure to the stability of layered minerals. Sci Rep 2017; 7:13274. [PMID: 29038454 PMCID: PMC5643302 DOI: 10.1038/s41598-017-13452-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 09/22/2017] [Indexed: 01/19/2023] Open
Abstract
Layered (oxy) hydroxide minerals often possess out-of-plane hydrogen atoms that form hydrogen bonding networks which stabilize the layered structure. However, less is known about how the ordering of these bonds affects the structural stability and solubility of these minerals. Here, we report a new strategy that uses the focused electron beam to probe the effect of differences in hydrogen bonding networks on mineral solubility. In this regard, the dissolution behavior of boehmite (γ-AlOOH) and gibbsite (γ-Al(OH)3) were compared and contrasted in real time via liquid cell electron microscopy. Under identical such conditions, 2D-nanosheets of boehmite (γ-AlOOH) exfoliated from the bulk and then rapidly dissolved, whereas gibbsite was stable. Further, substitution of only 1% Fe(III) for Al(III) in the structure of boehmite inhibited delamination and dissolution. Factors such as pH, radiolytic species, and knock on damage were systematically studied and eliminated as proximal causes for boehmite dissolution. Instead, the creation of electron/hole pairs was considered to be the mechanism that drove dissolution. The widely disparate behaviors of boehmite, gibbsite, and Fe-doped boehmite are discussed in the context of differences in the OH bond strengths, hydrogen bonding networks, and the presence or absence of electron/hole recombination centers.
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Affiliation(s)
- Michele Conroy
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Jennifer A Soltis
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Rick S Wittman
- National Security Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Frances N Smith
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Sayandev Chatterjee
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Xin Zhang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Eugene S Ilton
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Edgar C Buck
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.
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10
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He M, Ding Y, Chen J, Song Y. Spontaneous Uphill Movement and Self-Removal of Condensates on Hierarchical Tower-like Arrays. ACS NANO 2016; 10:9456-9462. [PMID: 27704770 DOI: 10.1021/acsnano.6b04525] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Fast removal of condensates from surfaces is of great significance due to the enhanced thermal transfer coefficient and continuous condensation. However, the lost superhydrophobicity of lotus leaves intrigues us to determine what kind of surface morphologies meets the self-removal of condensates? The uphill movement of condensates in textured surfaces is vital to avoid flooding and facilitating self-removal. Here, superhydrophobic microtower arrays were designed to explore the spontaneous uphill movement and Wenzel to Cassie transition as well as the self-removal of condensates. The tower-like arrays enable spontaneous uphill movement of tiny condensates entrapped in microstructures due to the large upward Laplace pressure, which is ∼30 times larger than that on cone-like arrays. The sharp tips decrease the adhesion to suspending droplets and promote their fast self-removal. These results are important for designing desirable textured surfaces by enlarging upward Laplace pressure to facilitate condensate self-removal, which is widely applied in self-cleaning, antifogging, anti-icing, water harvesting, and thermal management systems.
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Affiliation(s)
- Min He
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences , Beijing 100190, China
| | - Yue Ding
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences , Beijing 100190, China
| | - Jing Chen
- Department of Chemistry, School of Science, Tianjin University of Science and Technology , Tianjin 300457, China
| | - Yanlin Song
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences , Beijing 100190, China
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11
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Nagendran S, Periyasamy G, Kamath PV. DFT Study of Polymorphism in Al(OH)3: A Structural Synthon Approach. Z Anorg Allg Chem 2015. [DOI: 10.1002/zaac.201500226] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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12
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Yu L, Chen L, Dong LP, Li LJ, Wang YZ. Organic–inorganic hybrid flame retardant: preparation, characterization and application in EVA. RSC Adv 2014. [DOI: 10.1039/c4ra00700j] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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13
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You S, Li Y, Zhang Y, Yang C, Zhang Y. Synthesis of Uniformly Spherical Bayerite from a Sodium Aluminate Solution Reacted with Sodium Bicarbonate. Ind Eng Chem Res 2013. [DOI: 10.1021/ie401353t] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shaowei You
- National Engineering
Laboratory for Hydrometallurgical Cleaner Production Technology, Key Laboratory of Green Process and Engineering, Institute of Process
Engineering, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yan Li
- National Engineering
Laboratory for Hydrometallurgical Cleaner Production Technology, Key Laboratory of Green Process and Engineering, Institute of Process
Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Yifei Zhang
- National Engineering
Laboratory for Hydrometallurgical Cleaner Production Technology, Key Laboratory of Green Process and Engineering, Institute of Process
Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Chao Yang
- National Engineering
Laboratory for Hydrometallurgical Cleaner Production Technology, Key Laboratory of Green Process and Engineering, Institute of Process
Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Yi Zhang
- National Engineering
Laboratory for Hydrometallurgical Cleaner Production Technology, Key Laboratory of Green Process and Engineering, Institute of Process
Engineering, Chinese Academy of Sciences, Beijing 100190, China
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14
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Lectez S, Roques J, Salanne M, Simoni E. Car-Parrinello molecular dynamics study of the uranyl behaviour at the gibbsite/water interface. J Chem Phys 2012; 137:154705. [DOI: 10.1063/1.4758935] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- Sébastien Lectez
- Institut de Physique Nucléaire d'Orsay, Université Paris-Sud, CNRS UMR 8608, 15 rue Georges Clémenceau, Bâtiment 100, 91406 ORSAY Cedex, France
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15
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Computing the Properties of Materials from First Principles with SIESTA. STRUCTURE AND BONDING 2012. [DOI: 10.1007/b97943] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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16
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Jiajun M, Junxiao Y, Yawen H, Ke C. Aluminum–organophosphorus hybrid nanorods for simultaneously enhancing the flame retardancy and mechanical properties of epoxy resin. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c1jm13332b] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Kumara C, Ng W, Bandara A, Weerasooriya R. Nanogibbsite: Synthesis and characterization. J Colloid Interface Sci 2010; 352:252-8. [DOI: 10.1016/j.jcis.2010.08.083] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Revised: 08/29/2010] [Accepted: 08/31/2010] [Indexed: 12/01/2022]
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18
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Vyalikh A, Zesewitz K, Scheler U. Hydrogen bonds and local symmetry in the crystal structure of gibbsite. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2010; 48:877-881. [PMID: 20845364 DOI: 10.1002/mrc.2682] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
First-principles quantum mechanical calculations of NMR chemical shifts and quadrupolar parameters have been carried out to assign the (27)Al MAS NMR resonances in gibbsite. The (27)Al NMR spectrum shows two signals for octahedral aluminum revealing two aluminum sites coordinated by six hydroxyl groups each, although the crystallographic positions of the two Al sites show little difference. The presence of two distinguished (27)Al NMR resonances characterized by rather similar chemical shifts but quadrupolar coupling constants differing by roughly a factor of two is explained by different character of the hydrogen bonds, in which the hydroxyls forming the corresponding octahedron around each aluminum site, are involved. The Al-I site characterized by a C(Q) = 4.6 MHz is surrounded by OH-groups participating in four intralayer and two interlayer hydrogen bonds, while the Al-II site with the smaller quadrupolar constant (2.2 MHz) is coordinated by hydroxides, of which two point toward the intralayer cavities and four OH-bonds are aligned toward the interlayer gallery. In high-resolution solid-state (1)H CRAMPS (combination of rotation and multiple-pulse spectroscopy) four signals with an intensity ratio of 1:2:2:1 are resolved which allow to distinguish six nonequivalent hydrogen sites reported in the gibbsite crystal structure and to ascribe them to two types of structural OH groups associated with intralayer and interlayer hydrogen bonds. This study can be applied to characterize the gibbsite-like layer-intergallery interactions associated with hydrogen bonding in the more complex systems, such as synthetic aluminum layered double hydroxides.
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Affiliation(s)
- Anastasia Vyalikh
- Leibniz Institute of Polymer Research Dresden, Hohe Str. 6, D-01069 Dresden, Germany
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Alvarez-Ramírez F. First Principles Studies of Fe-Containing Aluminosilicate and Aluminogermanate Nanotubes. J Chem Theory Comput 2009; 5:3224-31. [DOI: 10.1021/ct9004992] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fernando Alvarez-Ramírez
- Instituto Mexicano del Petróleo, Programa de Ingeniería Molecular,Eje Central Lázaro Cárdenas 152, 07730, México, Distrito Federal, México
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Jodin-Caumon MC, Humbert B, Phambu N, Gaboriaud F. A vibrational study of the nature of hydroxyl groups chemical bonding in two aluminium hydroxides. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2009; 72:959-964. [PMID: 19167269 DOI: 10.1016/j.saa.2008.12.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2008] [Revised: 12/08/2008] [Accepted: 12/08/2008] [Indexed: 05/27/2023]
Abstract
Lengths, strengths and valences of OH bonds in the two aluminium hydroxides gibbsite and bayerite were determined on the basis of vibrational spectral data. The uncoupled OD stretching modes in the range 2400-2800cm(-1) were recorded by means of infrared diffuse reflectance, thereby avoiding effects of surface, vibrational coupling or particle shape. The assignment of the corresponding Raman spectra resulted in the determination of harmonic wavenumbers, force constants and anharmonicity coefficients of bulk OH groups in the two minerals. OH bond lengths deduced from these data varied from 0.964A to 0.975A in gibbsite and 0.962A to 0.973A in bayerite. These lengths appear to correspond to weak H-bonds contrary to previously recognized data from X-ray diffraction and neutron diffraction studies. Finally, bond valences were calculated on the basis of these new bond lengths and discussed as a function of crystallographic structures and the nature of hydrogen bonding in these two structures.
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Affiliation(s)
- Marie-Camille Jodin-Caumon
- Laboratoire de Chimie Physique et Microbiologie pour l'Environnement, UMR 7564 CNRS, Nancy-Université, 405 rue de Vandoeuvre, 54600 Villers-lès-Nancy, France.
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Mitsui T, Matsui T, Kikuchi R, Eguchi K. Microstructural Transformation with Heat-Treatment of Aluminum Hydroxide with Gibbsite Structure. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2009. [DOI: 10.1246/bcsj.82.618] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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22
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Teobaldi G, Beglitis NS, Fisher AJ, Zerbetto F, Hofer WA. Hydroxyl vacancies in single-walled aluminosilicate and aluminogermanate nanotubes. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2009; 21:195301. [PMID: 21825475 DOI: 10.1088/0953-8984/21/19/195301] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
We report a theoretical study of hydroxyl vacancies in aluminosilicate and aluminogermanate single-walled metal-oxide nanotubes. Defects are introduced on both sides of the tube walls and lead to occupied and empty states in the band gap which are highly localized both in energy and in real space. Different magnetization states are found depending on both the chemical composition and the specific side with respect to the tube cavity. The defect-induced perturbations to the pristine electronic structure are related to the electrostatic polarization across the tube walls and the ensuing change in Lewis acid-base reactivity. A general approach towards a quantitative evaluation of both the polarization across the tube walls and the tube excluded volume is also proposed and discussed on an electrostatic basis.
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Affiliation(s)
- Gilberto Teobaldi
- Surface Science Research Centre, Department of Chemistry, University of Liverpool, Liverpool L69 3BX, UK
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23
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Li G, Li C, Zhang C, Cheng Z, Quan Z, Peng C, Lin J. Tm3+ and/or Dy3+ doped LaOCl nanocrystalline phosphors for field emission displays. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b912115c] [Citation(s) in RCA: 120] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Veilly E, Roques J, Jodin-Caumon MC, Humbert B, Drot R, Simoni E. Uranyl interaction with the hydrated (001) basal face of gibbsite: A combined theoretical and spectroscopic study. J Chem Phys 2008; 129:244704. [DOI: 10.1063/1.3042142] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Demichelis R, Civalleri B, Noel Y, Meyer A, Dovesi R. Structure and stability of aluminium trihydroxides bayerite and gibbsite: A quantum mechanical ab initio study with the Crystal06 code. Chem Phys Lett 2008. [DOI: 10.1016/j.cplett.2008.09.070] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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26
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Creton B, Bougeard D, Smirnov KS, Guilment J, Poncelet O. Molecular dynamics study of hydrated imogolite : 2. Structure and dynamics of confined water. Phys Chem Chem Phys 2008; 10:4879-88. [DOI: 10.1039/b803479f] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Demichelis R, Noel Y, Civalleri B, Roetti C, Ferrero M, Dovesi R. The Vibrational Spectrum of α-AlOOH Diaspore: An Ab Initio Study with the CRYSTAL Code. J Phys Chem B 2007; 111:9337-46. [PMID: 17629324 DOI: 10.1021/jp072501d] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The vibrational spectrum of alpha-AlOOH diaspore has been calculated at the B3LYP level of theory with a double-zeta quality Gaussian-type basis set by using the periodic ab initio CRYSTAL code. Harmonic frequencies at the Gamma point and the corresponding 48 normal modes are analyzed and classified in terms of simple models (octahedra modes, hydrogen stretching, bending, rotations) by direct inspection of eigenvectors, graphical representation, and isotopic substitution. Hydrogen modes are fully separated from the octahedra modes appearing under 800 cm(-1); bending modes are located in the range of 1040-1290 cm(-1), whereas stretching modes appear at 3130-3170 cm(-1). The available experimental IR and Raman spectra are characterized by broad bands, in some cases as large as 800 cm(-1), and individual peaks are obtained by decomposing these bands in terms of Lorentz-Gauss product functions; such a fitting procedure is affected by a relatively large degree of arbitrariness. The comparison of our calculated data with the most complete sets of experimental data shows, nevertheless, a relatively good agreement for all but the H modes; the mean absolute differences for modes not involving H are 10.9 and 7.2 cm(-1) for the IR and the Raman spectra, respectively, the maximum differences being 15.5 and 18.2 cm(-1). For the H bending modes, differences increase to 30 and 37 cm(-1), and for the stretching modes, the calculated frequencies are about 200 cm(-1) higher than the experimental ones; this is not surprising, as anharmonicity is expected to red shift the OH stretching by about 150 cm(-1) in isolated OH groups and even more when the latter is involved in strong hydrogen bonds, as is the case here.
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Affiliation(s)
- R Demichelis
- Dipartimento di Chimica IFM, Università di Torino, Via P. Giuria 7, 10125 Torino, Italy
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Marqués M, Flórez M, Recio JM, Santamaría D, Vegas A, García Baonza V. Structure, metastability, and electron density of Al lattices in light of the model of anions in metallic matrices. J Phys Chem B 2006; 110:18609-18. [PMID: 16970490 DOI: 10.1021/jp063883a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This paper reports a theoretical investigation of the structure, stability, and electron charge density of cubic, rhombohedral, hexagonal, and monoclinic Al lattices. The equations of state and the elastic constants are computed from total energy calculations at different volumes and unit cell strains using the density functional theory approximation. The topology of the electron density is analyzed within the crystalline implementation of the atoms in molecules formalism. The results are discussed in light of the so-called anions in metallic matrices model, which permits the interpretation of the chemical bonding and the explanation of the existence of particular symmetries of inorganic crystals. First, the Al sublattices are identified as the reference building blocks of AlX(3) (X = F, Cl, OH) compounds. The calculations reveal that the equilibrium zero-pressure Al-Al shortest distance is around 2.75 A in all of the Al matrixes, similar to the value observed in the stable face centered cubic structure of Al at room conditions. Second, at their zero-pressure equilibrium geometries, the Al sublattices are found to fulfill the mechanical stability criteria or, alternatively, to show mechanical instabilities that are compatible with the distortions observed for the structures in AlX(3) crystals. However, at the equilibrium volumes of the AlX(3) crystals, all of the Al matrices violate the spinodal condition, and the cohesion and stabilization are provided by the nonmetallic X atoms. Third, the structural anisotropy of the Al sublattices seems to be the main factor to discriminate metallic matrices able to host nonmetallic elements. The inhomogeneities of the electron charge density, which favor the arrival of nonmetallic elements and the crystal formation, are notably enhanced in passing from the fcc structure of pure Al to the less isotropic Al matrices observed in AlX(3) compounds.
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Affiliation(s)
- M Marqués
- Departamento de Química Física y Analítica, Universidad de Oviedo, E-33006 Oviedo, Spain
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Bucko T, Hafner J, Angyán JG. Geometry optimization of periodic systems using internal coordinates. J Chem Phys 2006; 122:124508. [PMID: 15836398 DOI: 10.1063/1.1864932] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
An algorithm is proposed for the structural optimization of periodic systems in internal (chemical) coordinates. Internal coordinates may include in addition to the usual bond lengths, bond angles, out-of-plane and dihedral angles, various "lattice internal coordinates" such as cell edge lengths, cell angles, cell volume, etc. The coordinate transformations between Cartesian (or fractional) and internal coordinates are performed by a generalized Wilson B-matrix, which in contrast to the previous formulation by Kudin et al. [J. Chem. Phys. 114, 2919 (2001)] includes the explicit dependence of the lattice parameters on the positions of all unit cell atoms. The performance of the method, including constrained optimizations, is demonstrated on several examples, such as layered and microporous materials (gibbsite and chabazite) as well as the urea molecular crystal. The calculations used energies and forces from the ab initio density functional theory plane wave method in the projector-augmented wave formalism.
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Affiliation(s)
- Tomás Bucko
- Computational Materials Science, Institut für Materialphysik, Universität Wien, Sensengasse 8/12, A-1090 Wien, Austria.
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Wang Z, Lin C, Liu X, Li G, Luo Y, Quan Z, Xiang H, Lin J. Tunable Photoluminescent and Cathodoluminescent Properties of ZnO and ZnO:Zn Phosphors. J Phys Chem B 2006; 110:9469-76. [PMID: 16686492 DOI: 10.1021/jp057214t] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
ZnO and ZnO:Zn powder phosphors were prepared by the polyol-method followed by annealing in air and reducing gas, respectively. The samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), X-ray photoelectron spectra (XPS), electron paramagnetic resonance (EPR), and photoluminescence (PL) and cathodoluminescence (CL) spectra, respectively. The results indicate that all samples are in agreement with the hexagonal structure of the ZnO phase and the particle sizes are in the range of 1-2 microm. The PL and CL spectra of ZnO powders annealed at 950 degrees C in air consist of a weak ultraviolet emission band (approximately 390 nm) and a broad emission band centered at about 527 nm, exhibiting yellow emission color to the naked eyes. When the sample was reduced at the temperatures from 500 to 1050 degrees C, the yellow emission decreased gradually and disappeared completely at 800 degrees C, whereas the ultraviolet emission band became the strongest. Above this temperature, the green emission ( approximately 500 nm) appeared and increased with increasing of reducing temperatures. According to the EPR results and spectral analysis, the yellow and green emissions may arise from the transitions of photogenerated electron close to the conduction band to the deeply trapped hole in the single negatively charged interstitial oxygen ion (Oi(-)) and the single ionized oxygen vacancy (V.O) centers, respectively.
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Affiliation(s)
- Zhenling Wang
- Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P R China
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Liu XJ, Wu ZJ, Hao XF, Xiang HP, Meng J. First-principles comparative study of the pressure-induced phase transition of NaSbO3 and NaBiO3. Chem Phys Lett 2005. [DOI: 10.1016/j.cplett.2005.09.034] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Yang J, Okuyama K, Morris K, Arp Z, Laane J. S0 Ring-Puckering Potential Energy Function for Coumaran. J Phys Chem A 2005; 109:8290-2. [PMID: 16834217 DOI: 10.1021/jp053179e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
With the aid of a reported inversion splitting value, the far-infrared spectrum resulting from the ring-puckering vibration of coumaran has been reassigned and the one-dimensional potential energy function has been determined. The barrier to planarity is 155 +/- 4 cm(-1) and the dihedral angle is 25 degrees . These results agree well with the millimeter wave spectra values of 152 cm(-1) and 23 degrees , which utilized different data and a different type of potential function for the calculations. The MP2/cc-pvtz ab initio values of 238 cm(-1) and 26.5 degrees agree more poorly. If the benzene ring is assumed to remain rigid, the calculated barrier drops to 204 cm(-1). The puckering potential functions for the ring-flapping and ring-twisting vibrationally excited states were also determined and the barriers were found to be 149 and 156 cm(-1), respectively.
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Affiliation(s)
- Juan Yang
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, USA
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Frenzel J, Oliveira AF, Duarte HA, Heine T, Seifert G. Structural and Electronic Properties of Bulk Gibbsite and Gibbsite Surfaces. Z Anorg Allg Chem 2005. [DOI: 10.1002/zaac.200500051] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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34
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Liu H, Tse JS, Hu J, Liu Z, Wang L, Chen J, Weidner DJ, Meng Y, Häusermann D, Mao HK. Structural Refinement of the High-Pressure Phase of Aluminum Trihydroxide: In-Situ High-Pressure Angle Dispersive Synchrotron X-ray Diffraction and Theoretical Studies. J Phys Chem B 2005; 109:8857-60. [PMID: 16852053 DOI: 10.1021/jp0501594] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In-situ high-pressure synchrotron angle-dispersive X-ray diffraction for gibbsite (aluminum trihydroxide) was performed at room temperature up to 20 GPa. A pressure-induced phase transition was observed at 2.6 GPa. The new high-pressure phase can be recovered at ambient pressure. Rietveld refinement shows that the new phase of Al(OH)(3) has an orthorhombic structure, spacegroup Pbca, and the lattice parameters at ambient condition are a = 868.57(5) pm, b = 505.21(4) pm, c = 949.54(6) pm, V = 416.67(6) x 10(6) pm(3) with Z = 8. The compressibility of gibbsite and the high-pressure polymorph was analyzed, and their bulk moduli were estimated as 49.8 +/- 1.8 and 81.0 +/- 5.2 GPa, respectively. First-principles calculations of the high-pressure phase were performed to determine the hydrogen positions and to confirm the structural stability of the new phase.
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Affiliation(s)
- Haozhe Liu
- HPCAT, Advanced Photon Source, Building 434E, Argonne National Laboratory, Argonne, Illinois 60439-4803, USA.
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Digne M, Sautet P, Raybaud P, Toulhoat H, Artacho E. Structure and Stability of Aluminum Hydroxides: A Theoretical Study. J Phys Chem B 2002. [DOI: 10.1021/jp014182a] [Citation(s) in RCA: 211] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mathieu Digne
- Institut de Recherches sur la Catalyse, Centre National de la Recherche Scientifique, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France, Laboratoire de Chimie Théorique et des Matériaux Hybrides, Ecole Normale Supérieure de Lyon, 46 Allée d'Italie, 69364 Lyon Cedex 07, France, Institut Français du Pétrole, Division Chimie et Physico-chimie appliquées, Département Thermodynamique et Modélisation Moléculaire, 1-4 avenue de Bois-Préau, 92852 Rueil-Malmaison Cedex, France, Institut Français du
| | - Philippe Sautet
- Institut de Recherches sur la Catalyse, Centre National de la Recherche Scientifique, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France, Laboratoire de Chimie Théorique et des Matériaux Hybrides, Ecole Normale Supérieure de Lyon, 46 Allée d'Italie, 69364 Lyon Cedex 07, France, Institut Français du Pétrole, Division Chimie et Physico-chimie appliquées, Département Thermodynamique et Modélisation Moléculaire, 1-4 avenue de Bois-Préau, 92852 Rueil-Malmaison Cedex, France, Institut Français du
| | - Pascal Raybaud
- Institut de Recherches sur la Catalyse, Centre National de la Recherche Scientifique, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France, Laboratoire de Chimie Théorique et des Matériaux Hybrides, Ecole Normale Supérieure de Lyon, 46 Allée d'Italie, 69364 Lyon Cedex 07, France, Institut Français du Pétrole, Division Chimie et Physico-chimie appliquées, Département Thermodynamique et Modélisation Moléculaire, 1-4 avenue de Bois-Préau, 92852 Rueil-Malmaison Cedex, France, Institut Français du
| | - Hervé Toulhoat
- Institut de Recherches sur la Catalyse, Centre National de la Recherche Scientifique, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France, Laboratoire de Chimie Théorique et des Matériaux Hybrides, Ecole Normale Supérieure de Lyon, 46 Allée d'Italie, 69364 Lyon Cedex 07, France, Institut Français du Pétrole, Division Chimie et Physico-chimie appliquées, Département Thermodynamique et Modélisation Moléculaire, 1-4 avenue de Bois-Préau, 92852 Rueil-Malmaison Cedex, France, Institut Français du
| | - Emilio Artacho
- Institut de Recherches sur la Catalyse, Centre National de la Recherche Scientifique, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France, Laboratoire de Chimie Théorique et des Matériaux Hybrides, Ecole Normale Supérieure de Lyon, 46 Allée d'Italie, 69364 Lyon Cedex 07, France, Institut Français du Pétrole, Division Chimie et Physico-chimie appliquées, Département Thermodynamique et Modélisation Moléculaire, 1-4 avenue de Bois-Préau, 92852 Rueil-Malmaison Cedex, France, Institut Français du
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