Materials Literature
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The widespread use of silver nanoparticles (Ag-NPs) in commercial products, especially textiles, will likely result in an unknown spread of Ag into the environment. The quantification and characterization of the Ag released from nano-Ag-products is an important parameter needed to predict the effect of Ag-NPs on the e…
Graphene sheets, which possess unique nanostructure and a variety of fascinating properties, are considered as promising nanoscale building blocks of new nanocomposites, namely as a support material for the dispersion of metal nanoparticles. One of the methodologies used to prepare graphene sheets is the chemical exfo…
The production of functional nanostructured materials starting from cheap natural precursors using environmentally friendly processes is a highly attractive subject in material chemistry today. Recently, much attention has been focused on the use of plant biomass to produce functional carbonaceous materials, encompass…
Lanthanide-doped nanoparticles capable of (up)converting near-infrared (NIR) light to higher energies via an anti-Stokes process known as upconversion have demonstrated extraordinary potential in biological applications on the virtue that background fluorescence is near-zero. To maximize the intensity of the upconvert…
Abstract In this study, effects of selected factors on selected properties of carbon resin electrodes (CRE) have been investigated. CRE were developed from used dry cells and resin using non‐heat‐treatment process. Selected properties (density, electrical resistance, microstructure, hygroscopy, stability moisture cont…
A microscopic theory of longitudinal sound velocity in a manganite system is reported here. The manganite system is described by a model Hamiltonian consisting of charge density wave (CDW) interaction in the e(g) band, an exchange interaction between spins of the itinerant e(g) band electrons and the core t(2g) electr…
Summary New mono- and diamine compounds were synthesized from dodecylamine and 1,12-dodacanediamine and evaluated as acid corrosion inhibitors for low-carbon steel. The inhibition behavior of these compounds was examined using gravimetric and electrochemical methods (linear polarization and Tafel plot). Weight-loss te…
By means of first-principles calculations within the density-functional theory, we find that stable face-centered-cubic (fcc) ${\text{K}}_{3}{\text{B}}_{80}$ and ${\text{Mg}}_{3}{\text{B}}_{80}$ solids can be formed. For both solids, two possibly stable geometrical phases (identified as phase $A$ and phase $B$) with d…
Abstract A series of copper and zinc mixed oxides composed of equimolar ratio and treated with 0.05 Al 2 O 3 /mol catalyst has been prepared by coprecipitation method using their nitrates in presence of 1 M NaOH solution. The precipitation was carried out at a pH 9.5 and 50°C. The results revealed that the bulk of var…
The N-substitution reactions of 20-π-electron β-tetrakis(trifluoromethyl)-meso-tetraphenylporphyrin 2 with α,ω-dibromoalkanes in N,N-dimethylformamide at room temperature in the presence of various bases gave a variety of N-substituted isophlorins, the nature of which depended on the chain length of α,ω-dibromoalkanes…
We synthesized tetragonal α-FeSe by melting a powder mixture of iron and selenium at high pressure. Subsequent annealing at normal pressure results in removing traces of hexagonal β-FeSe, formation of a rather sharp transition to a superconducting state at T(c)∼7 K, and the appearance of a magnetic transition near T(M…
This paper reports an analysis of the structure and heat stability of two different collagen gels: conventional collagen gel (neutral gel) and gel without collagen fibrils (acidic gel), previously reported. We performed differential scanning calorimetry (DSC), observations by scanning electron microscope (SEM), observ…
High-quality nanostructured Zn x Cd 1− x S has been synthesized through a method of two-step thermal evaporation. The typical morphologies of the nanomaterials were investigated by SEM and TEM. The first step of synthesis is the preparation of ZnS nanoribbons. With ZnS nanoribbons being used as templates, a series of…
Na 0.3 WO 3 1D nanostructure forms (nanorods and nanobelts) were grown by a solid–liquid–solid mechanism from a 40 nm sputtered tungsten film deposited on a soda-lime substrate and annealed at 700 °C in a tubular furnace in N 2 ambient. The morphology, structure, composition and chemical state of the prepared nanostru…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTLiquid Crystalline Features of Optically Active Poly(methylene-1,3-cyclopentane)Naofumi Naga*†, Hajime Shimura†, and Masato Sone‡View Author Information† Department of Applied Chemistry, Materials Science Course, College of Engineer…
We study structural and thermophysical properties of a one-dimensional classical fluid made of penetrable spheres interacting via an attractive square-well potential. Penetrability of the spheres is enforced by reducing from infinite to finite the repulsive energy barrier in the pair potentials As a consequence, an ex…
Influences of precipitate rinsing solvents on Ni for methane decomposition to CO(x)-free hydrogen has been investigated in this study. Calcination of nickel hydroxide precipitates rinsed by ethanol leads to the formation of nanosheet needle-like NiO, whereas calcination of those rinsed by deionized water leads to the…
Abstract In this research, we attempt to improve the impact strength and the viscosity of PA (polyamide) by blending two elastomers, TPU (thermoplastic polyurethane) and POE‐ g ‐MA (maleic anhydride‐grafted polyethylene‐octene elastomer), in PA matrix with twin screw extruder. The ratio of blending is 80PA/20TPU and 8…
Abstract Lyotropic nematic textures are investigated, using optical microscopy, near the reentrant isotropic ( I RE ) ‐ discotic nematic ( N D ‐ ) ‐ biaxial nematic ( N B ) ‐ calamitic nematic ( N C + ) ‐ isotropic ( I ) phase transitions in a lyotropic mixture of potassium laurate, decanol and D 2 O . The N B , inter…
The controlled self-assembly of molecules and interactions between them remain a challenge in creating tunable and functional organic nanostructures. One class of molecular systems that has proven useful for incorporating tunable functionality at different length scales is liquid crystals (LCs) due to its ability to i…