Materials Literature
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Using a silicone demulsifier is an efficient approach in the treatment of environmental pollution caused by aged oil. A new type of silicone demulsifier was prepared in this work by following a two-step synthesis method based on SP169 (octadecanol block polyether) and AE16 (monoamine aliphatic alkyl block polyether).…
A novel technique is proposed to measure how far vacancies diffuse from the initial damaged region with sub‐micrometer resolution. Vacancies created by a single heavy ion with high energy are considered. The most important feature of the single ion track is the quasi‐one‐dimensional vacancy distribution with high volu…
Silver complex of 4-Amino-N-(2,6-dimethoxypyrimidin-4-yl)benzenesulfonamide (sulfadimethoxine) have been synthesized and characterized by IR, NMR, PL and UV spectroscopy. Silver complex of sulfadimethoxine crystallizes in monoclinic space group P21/c with lattice parameters: a = 5.9684(4)Å, b = 11.1694(4)Å, c = 22.471…
The surface of polyacrylonitrile electrospun nanofibrous membrane (PAN NFM) was aminated by the ammonia plasma treatment. The content of amine groups has been estimated for different time of plasma treatment. The newly generated amine groups were successfully activated by glutaraldehyde (Ga) for the covalent attachmen…
High-level theoretical calculations suggest that a Criegee intermediate preferably interacts with carbon dioxide compared to two other greenhouse gases, nitrous oxide and methane. The results also suggest that the interaction between Criegee intermediates and carbon dioxide involves a cycloaddition reaction, which res…
Abstract The dandelion‐like Co 3 O 4 /CoWO 4 heterostructure was fabricated for the first time through a two‐step hydrothermal method involving the preparation of urchin‐like Co(CO 3 ) 0.5 (OH) ⋅ 0.11H 2 O at low temperature, as well as its decomposition and an in situ growth of CoWO 4 nanoparticles at relatively high…
Abstract Recent experiments reported excellent transport properties of two-dimensional (2D) van der Waals (vdW) heterostructures made of atomically thin InSe layers encapsulated by two h BN capping layers (ISBN). The carrier mobility of the ISBN films exceeded <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" o…
Mesoporous cobalt hexacyanoferrate nanocubes (meso–CoHCF) were prepared for the first time through a facile sacrificial template method. The CoHCF mesostructures possess a high specific surface area of 548.5 m2·g−1 and a large amount of mesopores, which enable fast mass transport of electrolyte and abundant energy sto…
We report the observations of electronic properties of graphene oxide and reduced graphene oxide, performed with electron paramagnetic resonance technique in a broad temperature range. Both materials were examined in pure form and saturated with air, helium, and heavy water molecules. We show that spin localization st…
The initial corrosion proceeds as self-catalyzed pitting, visualized by the sudden appearance of circular pits with uniform diameters of 6-7 μm and depth ∼2-3 nm. At concentrations above 10 mM NaCl, pitting is initiated at the outer rim of the confined zone, while below 10 mM NaCl, pitting is initiated inside the conf…
Cu2O nano-particles were prepared by the liquid-phase reduction method and the effect of the dispersant was studied. The microstructure, surface morphology and optical properties of Cu2O nano-particles were characterized by X-ray diffractometer, X-ray photoelectron spectroscopy, nitrogen static adsorption, scanning el…
Abstract We explore the electronic structure of two-dimensional (2D) MnPSe 3 /MoS 2 van der Waals (vdW) heterostructures based on density functional theory. A novel spin splitting at the valance band maximum of MnPSe 3 appears in some specific stacking models due to Mn d orbital hybridization. The simultaneous spin an…
The development of rational pharmaceutical polymorph control systems from crystallization requires the experimental manipulation of both thermodynamic and kinetic factors. Herein, we discuss the interplay between thermodynamics and kinetics on the formation mechanism responsible for concomitant polymorphs and their su…
The use of nanoporous anodic alumina (NAA) for the development of drug delivery systems has gained much attention in recent years. The release of drugs loaded inside NAA pores is complex and depends on the morphology of the pores. In this study, NAA, with different three-dimensional (3D) pore structures (cylindrical p…
Abstract Highly efficient Wacker oxidation of aromatic or aliphatic terminal alkenes into methyl ketones and benzofurans is developed by using reusable Pd 0 nanoparticles (NPs) supported on ZrO 2 under acid‐ and cocatalyst‐free conditions. Molecular oxygen or air can be utilized as the terminal oxidant, which results…
We characterize the phase behavior of glassy water by performing extensive out-of-equilibrium molecular dynamics simulations using the TIP4P/2005 water model. Specifically, we study (i) the pressure-induced transformations between low-density (LDA) and high-density amorphous ice (HDA), (ii) the pressure-induced amorph…
Polymer zwitterions are generally regarded as hydrophilic and repellant or "slippery" materials. Here, a case is described in which the polymer zwitterion structure is tailored to decrease water solubility, stabilize emulsion droplets, and promote interdroplet adhesion. Harnessing the upper critical solution temperatu…
Abstract Boron nanostructures are easily charged but how charge carriers affect their structural stability is unknown. We combined cluster expansion methods with first‐principles calculations to analyze the dependence of the preferred structure of two‐dimensional (2D) boron, or “borophene”, on charge doping controlled…
In this work, we tested our hypothesis that surface chemistry and antioxidant properties of cerium nanoparticles (CNPs) are affected by the presence of counterions. We first employed various precursor cerium(III) (Ce(III)) salts with different counterions (acetate, nitrate, chloride, and sulfate) to synthesize CNPs fo…
Abstract A small quantity of Eu 3+ ions were doped in the lead‐free ferroelectric K 0.5 Na 0.5 NbO 3 – x LiNbO 3 ( KNN – x LN , 0 ≤ x ≤ 0.08) ceramics to investigate the NbO 6 octahedral distortion induced by the increasing LN content. In addition, the phase structure, ferroelectric, and photoluminescence properties o…