1
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Hareendran C, Ravindranathan S, Ajithkumar TG. Insights into the Structure of Sucralfate by Advanced Solid- and Liquid-State NMR. Mol Pharm 2024; 21:1390-1401. [PMID: 38329458 DOI: 10.1021/acs.molpharmaceut.3c01042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Sucralfate, which is a sucrose octasulfate aluminum complex, is an active pharmaceutical ingredient (API) falling in the category of cytoprotective agents which are very effective for gastric and duodenal ulcers. On interaction with stomach acid, it ionizes into aluminum and sucrose octasulfate ions to form a protective layer over the ulcerated region inhibiting further attack from acid. The mechanism of action of sucralfate in the context of its structure is not well understood. Considering that at least two forms of this API are available in the market, there are no reports on the various forms of sucralfate and differences in their pharmacological action. We characterized the two forms of sucralfate using multinuclear, multidimensional solid-state NMR, and the results show significant structural differences between them arising from variation in the aluminum environment and the level of hydration. The impact of structural differences on pharmacological action was examined by studying acid-induced Al release by 27Al liquid-state NMR. The sucralfate, European pharmaceutical standard, Form I, undergoes faster disruption in acid compared to Form II. The difference is explained on the basis of structural differences in the two forms which gives significant insights into the action of sucralfate in relation to its structure.
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Affiliation(s)
- Chaithanya Hareendran
- Central NMR Facility and Physical and Materials Chemistry Division, CSIR National Chemical Laboratory, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sapna Ravindranathan
- Central NMR Facility and Physical and Materials Chemistry Division, CSIR National Chemical Laboratory, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - T G Ajithkumar
- Central NMR Facility and Physical and Materials Chemistry Division, CSIR National Chemical Laboratory, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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2
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Li D, Zhang N, Gao D, Zhuang Z, Zeng D. Phase Chemistry for Hydration Sensitive (De)intercalation of Lithium Aluminum Layered Double Hydroxide Chlorides. ACS MATERIALS AU 2024; 4:45-54. [PMID: 38221919 PMCID: PMC10786131 DOI: 10.1021/acsmaterialsau.3c00063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/22/2023] [Accepted: 09/22/2023] [Indexed: 01/16/2024]
Abstract
Lithium aluminum layered double hydroxide chlorides (LADH-Cl) have been widely used for lithium extraction from brine. Elevation of the performances of LADH-Cl sorbents urgently requires knowledge of the composition-structure-property relationship of LADH-Cl in lithium extraction applications, but these are still unclear. Herein, combining the phase equilibrium experiments, advanced solid characterization methods, and theoretical calculations, we constructed a cyclic work diagram of LADH-Cl for lithium capture from aqueous solution, where the reversible (de)hydration and (de)intercalation induced phase evolution of LADH-Cl dominates the apparent lithium "adsorption-desorption" behavior. It is found that the real active ingredient in LADH-Cl type lithium sorbents is a dihydrated LADH-Cl with an Al:Li molar ratio varying from 2 to 3. This reversible process indicates an ultimate reversible lithium (de)intercalation capacity of ∼10 mg of Li per g of LADH-Cl. Excessive lithium deintercalation results in the phase structure collapse of dihydrated LADH-Cl to form gibbsite. When interacting with a concentrated LiCl aqueous solution, gibbsite is easily converted into lithium saturated intercalated LADH-Cl phases. By further hydration with a diluted LiCl aqueous solution, this phase again converts to the active dihydrated LADH-Cl. In the whole cyclic progress, lithium ions thermodynamically favor staying in the Al-OH octahedral cavities, but the (de)intercalation of lithium has kinetic factors deriving from the variation of the Al-OH hydroxyl orientation. The present results provide fundamental knowledge for the rational design and application of LADH-Cl type lithium sorbents.
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Affiliation(s)
- Dongdong Li
- Qinghai
Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, P. R. China
- Key
Lab of Comprehensive and Highly Efficient Utilization of Salt Lake
Resources, Chinese Academy of Sciences, Xining 810008, P. R. China
| | - Ning Zhang
- College
of Science, Central South University of
Forestry and Technology, Changsha 410004, P. R. China
| | - Dandan Gao
- Qinghai
Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, P. R. China
| | - Ziyu Zhuang
- Qinghai
Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, P. R. China
| | - Dewen Zeng
- Qinghai
Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, P. R. China
- College
of Chemistry and Chemical Engineering, Central
South University, Changsha 410083, P.R. China
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3
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Chen X, Shan W, Wu D, Patel SB, Cai N, Li C, Ye S, Liu Z, Hwang S, Zakharov DN, Boscoboinik JA, Wang G, Zhou G. Atomistic mechanisms of water vapor-induced surface passivation. SCIENCE ADVANCES 2023; 9:eadh5565. [PMID: 37910618 PMCID: PMC10619940 DOI: 10.1126/sciadv.adh5565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 09/29/2023] [Indexed: 11/03/2023]
Abstract
The microscopic mechanisms underpinning the spontaneous surface passivation of metals from ubiquitous water have remained largely elusive. Here, using in situ environmental electron microscopy to atomically monitor the reaction dynamics between aluminum surfaces and water vapor, we provide direct experimental evidence that the surface passivation results in a bilayer oxide film consisting of a crystalline-like Al(OH)3 top layer and an inner layer of amorphous Al2O3. The Al(OH)3 layer maintains a constant thickness of ~5.0 Å, while the inner Al2O3 layer grows at the Al2O3/Al interface to a limiting thickness. On the basis of experimental data and atomistic modeling, we show the tunability of the dissociation pathways of H2O molecules with the Al, Al2O3, and Al(OH)3 surface terminations. The fundamental insights may have practical significance for the design of materials and reactions for two seemingly disparate but fundamentally related disciplines of surface passivation and catalytic H2 production from water.
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Affiliation(s)
- Xiaobo Chen
- Materials Science and Engineering Program and Department of Mechanical Engineering, State University of New York at Binghamton, Binghamton, NY 13902, USA
| | - Weitao Shan
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Dongxiang Wu
- Materials Science and Engineering Program and Department of Mechanical Engineering, State University of New York at Binghamton, Binghamton, NY 13902, USA
| | - Shyam Bharatkumar Patel
- Materials Science and Engineering Program and Department of Mechanical Engineering, State University of New York at Binghamton, Binghamton, NY 13902, USA
| | - Na Cai
- Materials Science and Engineering Program and Department of Mechanical Engineering, State University of New York at Binghamton, Binghamton, NY 13902, USA
| | - Chaoran Li
- Materials Science and Engineering Program and Department of Mechanical Engineering, State University of New York at Binghamton, Binghamton, NY 13902, USA
| | - Shuonan Ye
- Materials Science and Engineering Program and Department of Mechanical Engineering, State University of New York at Binghamton, Binghamton, NY 13902, USA
| | - Zhao Liu
- Department of Electrical and Computer Engineering, State University of New York at Binghamton, Binghamton, NY 13902, USA
| | - Sooyeon Hwang
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Dmitri N. Zakharov
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA
| | | | - Guofeng Wang
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Guangwen Zhou
- Materials Science and Engineering Program and Department of Mechanical Engineering, State University of New York at Binghamton, Binghamton, NY 13902, USA
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4
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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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5
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Graham TR, Hu JZ, Zhang X, Dembowski M, Jaegers NR, Wan C, Bowden M, Lipton AS, Felmy AR, Clark SB, Rosso KM, Pearce CI. Unraveling Gibbsite Transformation Pathways into LiAl-LDH in Concentrated Lithium Hydroxide. Inorg Chem 2019; 58:12385-12394. [DOI: 10.1021/acs.inorgchem.9b02000] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Trent R. Graham
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
- The Voiland School of Chemical and Biological Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Jian Zhi Hu
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
- Biological Science Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Xin Zhang
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Mateusz Dembowski
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Nicholas R. Jaegers
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
- Biological Science Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Chuan Wan
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Mark Bowden
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Andrew S. Lipton
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Andrew R. Felmy
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Sue B. Clark
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
- Materials Science and Engineering Program, Washington State University, Pullman, Washington 99164, United States
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Kevin M. Rosso
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Carolyn I. Pearce
- Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
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6
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Hughes CE, Walkley B, Gardner LJ, Walling SA, Bernal SA, Iuga D, Provis JL, Harris KDM. Exploiting in-situ solid-state NMR spectroscopy to probe the early stages of hydration of calcium aluminate cement. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2019. [PMID: 30772677 DOI: 10.1016/j.mtadv.2019.100007] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
We report a high-field in-situ solid-state NMR study of the hydration of CaAl2O4 (the most important hydraulic phase in calcium aluminate cement), based on time-resolved measurements of solid-state 27Al NMR spectra during the early stages of the reaction. A variant of the CLASSIC NMR methodology, involving alternate recording of direct-excitation and MQMAS 27Al NMR spectra, was used to monitor the 27Al species present in both the solid and liquid phases as a function of time. Our results provide quantitative information on the changes in the relative amounts of 27Al sites with tetrahedral coordination (the anhydrous reactant phase) and octahedral coordination (the hydrated product phases) as a function of time, and reveal significantly different kinetic and mechanistic behaviour of the hydration reaction at the different temperatures (20 °C and 60 °C) studied.
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Affiliation(s)
- Colan E Hughes
- School of Chemistry, Cardiff University, Park Place, Cardiff, Wales, CF10 3AT, UK
| | - Brant Walkley
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, UK
| | - Laura J Gardner
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, UK
| | - Samuel A Walling
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, UK
| | - Susan A Bernal
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, UK; School of Civil Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | - Dinu Iuga
- Department of Physics, University of Warwick, Coventry, CV4 7AL, UK
| | - John L Provis
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, UK.
| | - Kenneth D M Harris
- School of Chemistry, Cardiff University, Park Place, Cardiff, Wales, CF10 3AT, UK.
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7
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Highly Efficient Lithium Recovery from Pre-Synthesized Chlorine-Ion-Intercalated LiAl-Layered Double Hydroxides via a Mild Solution Chemistry Process. MATERIALS 2019; 12:ma12121968. [PMID: 31248077 PMCID: PMC6630303 DOI: 10.3390/ma12121968] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/08/2019] [Accepted: 06/17/2019] [Indexed: 11/16/2022]
Abstract
Lithium extraction from salt lake brine is critical for satisfying the increasing demand of a variety of lithium products. We report lithium recovery from pre-synthesized LiAl-layered double hydroxides (LDHs) via a mild solution reaction. Lithium ions were released from solid LiAl-LDHs to obtain a lithium-bearing solution. The LiAl-LDHs phase was gradually transformed into a predominantly Al(OH)3 phase with lithium recovery to the aqueous solution. The lithium recovery percentage and the concentration of the lithium-bearing solution were dependent on the crystallinity of LiAl-LDHs, the initial concentration of the LiAl-LDHs-1 slurry, the reaction temperature, and the reaction time. Under optimized conditions, the lithium recovery reached 86.2% and the Li+ concentration in the filtrate is 141.6 mg/L. Interestingly, no aluminum ions were detected in the filtrate after solid–liquid separation with high crystallinity LiAl-LDHs, which indicated the complete separation of lithium and aluminum in the liquid and solid phases, respectively. The 27Al NMR spectra of the solid products indicate that lithium recovery from the lattice vacancies of LiAl-LDHs affects the AlO6 coordination in an octahedral configuration of the ordered Al(OH)3 phase. The XPS O 1s spectra show that the Oad peak intensity increased and the OL peak intensity decreased with the increasing lithium recovery, which indicated that the Al-OH bond was gradually formed and the metal–oxygen–metal bond was broken.
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8
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Chandran CV, Kirschhock CEA, Radhakrishnan S, Taulelle F, Martens JA, Breynaert E. Alumina: discriminative analysis using 3D correlation of solid-state NMR parameters. Chem Soc Rev 2019; 48:134-156. [PMID: 30444247 DOI: 10.1039/c8cs00321a] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Synthetic transition aluminas (χ, κ, θ, γ, δ, η, ρ) exhibit unique adsorptive and catalytic properties leading to numerous practical applications. Generated by thermal transformation of aluminium (oxy)hydroxides, structural differences between them arise from the variability of aluminium coordination numbers and degree of dehydroxylation. Unequivocal identification of these phases using X-ray diffraction has proven to be very difficult. Quadrupolar interactions of 27Al nuclei, highly sensitive to each site symmetry, render advanced 27Al solid-state NMR a unique spectroscopic tool to fingerprint and identify the different phases. In this paper, 27Al NMR spectroscopic data on alumina reported in literature are collected in a comprehensive library. Based on this dataset, a new 3D correlative method of NMR parameters is presented, enabling fingerprinting and identification of such phases. Providing a gold standard from crystalline samples, this approach demonstrates that any sort of crystalline, ill crystallized or amorphous, mixed periodic or aperiodically ordered transition alumina can now be assessed beyond the current limitations of characterisation. Adopting the presented approach as a standard characterisation of alumina samples will readily reveal NMR parameter-structure-property relations suitable to develop new or improved applications of alumina. Methodological guidance is provided to assist consistent implementation of this characterisation throughout the fields involved.
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Affiliation(s)
- C Vinod Chandran
- Center for Surface Chemistry and Catalysis, Celestijnenlaan 200 F - box 2461, KU Leuven, 3001 Heverlee, Belgium.
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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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Siretanu I, Ebeling D, Andersson MP, Stipp SLS, Philipse A, Stuart MC, van den Ende D, Mugele F. Direct observation of ionic structure at solid-liquid interfaces: a deep look into the Stern Layer. Sci Rep 2014; 4:4956. [PMID: 24850566 PMCID: PMC4030399 DOI: 10.1038/srep04956] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 04/22/2014] [Indexed: 12/03/2022] Open
Abstract
The distribution of ions and charge at solid-water interfaces plays an essential role in a wide range of processes in biology, geology and technology. While theoretical models of the solid-electrolyte interface date back to the early 20th century, a detailed picture of the structure of the electric double layer has remained elusive, largely because of experimental techniques have not allowed direct observation of the behaviour of ions, i.e. with subnanometer resolution. We have made use of recent advances in high-resolution Atomic Force Microscopy to reveal, with atomic level precision, the ordered adsorption of the mono- and divalent ions that are common in natural environments to heterogeneous gibbsite/silica surfaces in contact with aqueous electrolytes. Complemented by density functional theory, our experiments produce a detailed picture of the formation of surface phases by templated adsorption of cations, anions and water, stabilized by hydrogen bonding.
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Affiliation(s)
- Igor Siretanu
- 1] Physics of Complex Fluids Group and MESA+ Institute, Faculty of Science and Technology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands [2]
| | - Daniel Ebeling
- 1] Physics of Complex Fluids Group and MESA+ Institute, Faculty of Science and Technology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands [2]
| | - Martin P Andersson
- Nano-Science Center, Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - S L Svane Stipp
- Nano-Science Center, Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Albert Philipse
- Van't Hoff Laboratory for Physical and Colloid Chemistry, Debye Institute, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Martien Cohen Stuart
- Physics of Complex Fluids Group and MESA+ Institute, Faculty of Science and Technology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
| | - Dirk van den Ende
- Physics of Complex Fluids Group and MESA+ Institute, Faculty of Science and Technology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
| | - Frieder Mugele
- Physics of Complex Fluids Group and MESA+ Institute, Faculty of Science and Technology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
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11
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Yu G, Shen M, Wang M, Shen L, Dong W, Tang S, Zhao L, Qi Z, Xue N, Guo X, Ding W, Hu B, Peng L. Probing Local Structure of Layered Double Hydroxides with (1)H Solid-State NMR Spectroscopy on Deuterated Samples. J Phys Chem Lett 2014; 5:363-369. [PMID: 26270712 DOI: 10.1021/jz402510a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
By using a simple and efficient deuteration process, (2)H has been successfully introduced into layered double hydroxides (LDHs). Due to significantly less (1)H-(1)H homonuclear dipolar coupling, high-resolution (1)H solid-state NMR spectra can now be obtained conveniently at medium to low spinning speed to extract the information of cation ordering in LDHs. Furthermore, we show that double-resonance experiments can be applied easily to investigate internuclear proximities and test possible cation-ordered superstructure models. This approach can be readily extended to LDHs with different compositions to explore the local structure and the key interactions between the cations in the layer and interlayer anions.
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Affiliation(s)
- Guiyun Yu
- †Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
- ‡School of Chemical and Biological Engineering, Yancheng Institute of Technology, Yancheng 224051, China
| | | | - Meng Wang
- †Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Li Shen
- †Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Wenhao Dong
- †Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Sheng Tang
- †Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Li Zhao
- †Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Zhe Qi
- †Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Nianhua Xue
- †Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Xuefeng Guo
- †Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Weiping Ding
- †Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | | | - Luming Peng
- †Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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12
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13
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Bonhomme C, Gervais C, Babonneau F, Coelho C, Pourpoint F, Azaïs T, Ashbrook SE, Griffin JM, Yates JR, Mauri F, Pickard CJ. First-principles calculation of NMR parameters using the gauge including projector augmented wave method: a chemist's point of view. Chem Rev 2012; 112:5733-79. [PMID: 23113537 DOI: 10.1021/cr300108a] [Citation(s) in RCA: 312] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Christian Bonhomme
- Laboratoire de Chimie de la Matière Condensée de Paris, Université Pierre et Marie Curie, CNRS UMR, Collège de France, France.
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Vyalikh A, Wang DY, Wagenknecht U, Heinrich G, Scheler U. Molecular dynamics in aluminum layered double hydroxides as studied by 1H T1ρ NMR measurements. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.04.078] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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