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1,174 results
  • Surface modification of aqueous miscible organic layered double hydroxides (AMO-LDHs). [Journal Article]
    Dalton Trans. 2020 Jun 10 [Online ahead of print]Chen C, Buffet JC, O'Hare D
  • Silane modification of layered double hydroxides (LDHs) plays an important role in controlling the surface hydrophobicity and improving the compatibility of LDHs dispersed in non-polar materials. However, the surface modification of conventional LDHs in hydrous conditions typically results in aggregated particle morphologies, low surface areas and accessible pore volumes. In this study, well disp…
  • Hydrous oceanic crust hosts megathrust creep at low shear stresses. [Journal Article]
    Sci Adv. 2020 May; 6(22):eaba1529.Tulley CJ, Fagereng Å, Ujiie K
  • The rheology of the metamorphosed oceanic crust may be a critical control on megathrust strength and deformation style. However, little is known about the strength and deformation style of metamorphosed basalt. Exhumed megathrust shear zones exposed on Kyushu, SW Japan, contain hydrous metabasalts deformed at temperatures between ~300° and ~500°C, spanning the inferred temperature-controlled seis…
  • Analysis of particles from hamster lungs following pulmonary talc exposures: implications for pathogenicity. [Journal Article]
    Part Fibre Toxicol. 2020 Jun 04; 17(1):20.Sato E, McDonald SA, … Godleski JJ
  • CONCLUSIONS: Our data support the contention that talc, even without asbestos and other known toxic contaminants, may elicit inflammation and contribute to lung disease. Our findings support the conclusions of (Beck et al. Toxicol Appl Pharmacol 87:222-34, 1987) study. By analyzing particulate exposures with polarized light microscopy and SEM/EDX, fibrous talc was identified and a distinctive pattern of impaired particulate ingestion was demonstrated.
  • Lattice Oxygen Exchange in Rutile IrO2 during the Oxygen Evolution Reaction. [Journal Article]
    J Phys Chem Lett. 2020 Jun 12 [Online ahead of print]Schweinar K, Gault B, … Kasian O
  • The development of efficient acidic water electrolyzers relies on understanding dynamic changes of the Ir-based catalytic surfaces during the oxygen evolution reaction (OER). Such changes include degradation, oxidation, and amorphization processes, each of which somehow affects the material's catalytic performance and durability. Some mechanisms involve the release of oxygen atoms from the oxide'…
  • Terahertz Metamaterial with Multiple Resonances for Biosensing Application. [Journal Article]
    Nanomaterials (Basel). 2020 May 29; 10(6)Ou H, Lu F, … Lin YS
  • A sickle-shaped metamaterial (SSM) based biochemical sensor with multiple resonances was investigated in the terahertz frequency range. The electromagnetic responses of SSM were found to be four resonances, namely dipolar, quadrupolar, octupolar and hexadecapolar plasmon resonances. They were generated from the interactions between SSM and perpendicularly incident terahertz waves. The sensing per…
  • Interactions of Oxide Surfaces with Water Revealed with Solid-State NMR Spectroscopy. [Journal Article]
    J Am Chem Soc. 2020 May 27 [Online ahead of print]Chen J, Hope MA, … Peng L
  • Hydrous materials are ubiquitous in the natural environment and efforts have previously been made to investigate the structures and dynamics of hydrated surfaces for their key roles in various chemical and physical applications, with the help of theoretical modelling and microscopy techniques. However, an overall atomic-scale understanding of the water-solid interface, including the effect of wat…
  • A new concept for the genesis of felsic magma: the separation of slab-derived supercritical liquid. [Journal Article]
    Sci Rep. 2020 May 26; 10(1):8698.Taniuchi H, Kuritani T, … Nakagawa M
  • Felsic magmas produced at subduction zones have played an important role in the generation and evolution of the continental crust. For the origin of felsic magmas, processes such as fractional crystallization of mafic magmas, partial melting of crustal materials, partial melting of subducting slabs, and partial melting of pyroxenitic mantle wedge components have been proposed. Recent experimental…
  • Strong hydrogen bonding in a dense hydrous magnesium silicate discovered by neutron Laue diffraction. [Journal Article]
    IUCrJ. 2020 May 01; 7(Pt 3):370-374.Purevjav N, Okuchi T, Hoffmann C
  • A large amount of hydrogen circulates inside the Earth, which affects the long-term evolution of the planet. The majority of this hydrogen is stored in deep Earth within the crystal structures of dense minerals that are thermodynamically stable at high pressures and temperatures. To understand the reason for their stability under such extreme conditions, the chemical bonding geometry and cation e…
  • Quantum driven proton diffusion in brucite-like minerals under high pressure. [Journal Article]
    Sci Rep. 2020 May 15; 10(1):8123.Schaack S, Depondt P, … Finocchi F
  • Transport of hydrogen in hydrous minerals under high pressure is a key step for the water cycle within the Earth interior. Brucite Mg(OH)2 is one of the simplest minerals containing hydroxyl groups and is believed to decompose under the geological condition of the deep Earth's mantle. In the present study, we investigate the proton diffusion in brucite under high pressure, which results from a co…
  • Cadmium in soils and groundwater: A review. [Journal Article]
    Appl Geochem. 2019 Sep 01; 108:1-16.Kubier A, Wilkin RT, Pichler T
  • Cadmium (Cd) is a non-essential trace element that is widely distributed in the environment. Both geogenic and anthropogenic sources can elevate Cd concentrations in soils and groundwater, which are important for maintaining healthy supplies of food and safe drinking water. Elevated Cd doses are carcinogenic to humans. The WHO Guidelines for Drinking-Water Quality recommend a guideline value for …
  • Electron Microscopy Using Ionic Liquids for Life and Material Sciences. [Journal Article]
    Microscopy (Oxf). 2020 Apr 07 [Online ahead of print]Tsuda T, Kuwabata S
  • An ionic liquid (IL) is a salt consisting of only cations and anions, which exists in the liquid state at room temperature. Interestingly ILs combine various favorable physicochemical properties, such as negligible vapor pressure, flame resistance, relatively high ionic conductivity, wide electrochemical window etc. To take advantage of two specific features of ILs, viz. their non-volatile and an…
  • The Effect of Clay Content on the Spin-Spin NMR Relaxation Time Measured in Porous Media. [Journal Article]
    ACS Omega. 2020 Mar 31; 5(12):6545-6555.Elsayed M, Glatz G, … Mahmoud M
  • Clays, hydrous aluminous phyllosilicates, have a significant impact on the interpretation of physical measurements and properties of porous media. In particular, the presence of paramagnetic and/or ferromagnetic ions like iron, nickel, and magnesium in clays can complicate the analysis of nuclear magnetic resonance (NMR) data for porous media characterization. This is due to the internal magnetic…
  • Vesicle shrinkage in hydrous phonolitic melt during cooling. [Journal Article]
    Contrib Mineral Petrol. 2020; 175(3):21.Allabar A, Dobson KJ, … Nowak M
  • The ascent of hydrous magma prior to volcanic eruptions is largely driven by the formation of H2O vesicles and their subsequent growth upon further decompression. Porosity controls buoyancy as well as vesicle coalescence and percolation, and is important when identifying the differences between equilibrium or disequilibrium degassing from textural analysis of eruptive products. Decompression expe…
  • Influence of seawater ions on phosphate adsorption at the surface of hydrous ferric oxide (HFO). [Journal Article]
    Sci Total Environ. 2020 Jun 15; 721:137826.Zhang H, Elskens M, … Chou L
  • The adsorption of phosphate on hydrated ferric oxide (HFO) was studied in solutions containing major seawater ions (Na+, Mg2+, Cl-, SO42-, Ca2+, K+) at pHs 6.5, 7.5 and 8.5. The presence of these ions promotes phosphate adsorption and the process is electrostatic in nature. Despite this electrostatic force, the precipitation of hydroxyapatite in the presence of Ca2+ at pH 8.5 also plays an import…
  • Intraplate volcanism originating from upwelling hydrous mantle transition zone. [Journal Article]
    Nature. 2020 03; 579(7797):88-91.Yang J, Faccenda M
  • Most magmatism occurring on Earth is conventionally attributed to passive mantle upwelling at mid-ocean ridges, to slab devolatilization at subduction zones, or to mantle plumes. However, the widespread Cenozoic intraplate volcanism in northeast China1-3 and the young petit-spot volcanoes4-7 offshore of the Japan Trench cannot readily be associated with any of these mechanisms. In addition, the m…
  • Mysterious long-living ultrahigh-pressure or secondary impact crisis. [Journal Article]
    Sci Rep. 2020 Feb 13; 10(1):2591.Shumilova TG, Zubov AA, … Vasiliev AL
  • High-pressure glass has attracted interest in terms of both its fundamental state under extreme conditions and its possible applications as an advanced material. In this context, natural impact glasses are of considerable interest because they are formed under ultrahigh-pressure and high-temperature (UHPHT) conditions in larger volumes than laboratory fabrication can produce. Studying the UHPHT g…
  • Hydrous Nickel-Iron Turnbull's Blue as a High-Rate and Low-Temperature Proton Electrode. [Journal Article]
    ACS Appl Mater Interfaces. 2020 Feb 26; 12(8):9201-9208.Wu X, Qiu S, … Ji X
  • Proton batteries are emerging as a promising solution for energy storage; however, their development has been hindered by the lack of suitable cathode materials. Herein, a hydrous Turnbull's blue analogue (TBA) of Ni[Fe(CN)6]2/3·4H2O has been investigated as a viable proton cathode. Particularly, it shows an extremely high rate performance up to 6000 C (390 A g-1) at room temperature and delivers…
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