Materials Literature
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Chromium iron phosphate glass was investigated for use as waste form because of its improved chemical durability. The introduction of chromium in sodium-iron-phosphate glass is used to compare its effect with iron in inhibition of corrosion. The sodium-chromium-iron phosphate glass of composition 10Na2O-30Fe2O3-5Cr2O3…
Mg–1.5 mass%Mn (M1) alloy is known for its high damping properties. In this study, effects of process parameters such as rolling and annealing temperatures on the texture formation in rolled M1 alloys were investigated for the purpose of enhancing their room-temperature formability. Specimens were pre-annealed, warm-r…
Hyperbranched polymers (HBPs) have attracted more and more attention because of their specially branched architecture and interesting properties. A series of novel poly(amine-ester)-type HBPs were synthesized through CALB-catalyzed polycondensation between triethanolamine (TEOA) and diesters after the optimization of…
Graphene has shown great potential as an electrode material for organic electronic devices such as organic field-effect transistors (FETs) because of its high conductivity, thinness, and good compatibility with organic semiconductor materials. To achieve high performance in graphene-based organic FETs, favorable molec…
Recently, porous ceramic membranes have become an interesting subject due to their outstanding thermal and chemical stability. Among the many types of ceramics, as diatomite is inherently porous and irregular, it is worthwhile to investigate the relationship between the characteristics of sacrificial templates and por…
Zinc oxide (ZnO) films were synthesized using spray pyrolysis using glass as substrate at substrate temperature of 400 °C. The precursor used is an aqueous solution of ZnCl2. The deposition was done in ambient conditions. It was observed that the zinc oxide films are textured. The films yielded 0.3 transmittance in th…
Gold nanoparticles (AuNPs), amphiphilic cyclodextrin (SC6NH2) and anionic porphyrin (TPPS4) spontaneously self-assemble in aqueous basic solution forming nanostructures with controlled size and shape. Spectroscopic techniques such UV-Vis, fluorescence emission and Dynamic Light Scattering (DLS) demonstrate that AuNPs…
The combined electrochemical and chemical methods with limited cost and green technology have been introduced for production of bone-like calcium deficient hydroxyapatite (HA) coatings on the Mg-alloy and glassy carbon surfaces. The potential assisted deposition allows the formation of films of controlled composition…
Herein, we introduce a specially designed domain-confined macroporous catalyst, namely, the Co3O4 nanocrystals anchored on a TiO2 nanotube array catalyst, which was synthesized by using the mercaptoacetic acid induced surface-grafting method. This catalyst exhibits much better performance for catalytic soot combustion…
In this work we use Monte Carlo simulations to study the phase behavior of spherical caps confined between two parallel hard walls separated by a distance H. The particle model consists of a hard sphere of diameter σ cut off by a plane at a height χ, and it is loosely based on mushroom cap-shaped particles whose phase…
Mixed metal-hexacyanoferrates (MHCF) have shown promising applications for technological development particularly in energy storage technologies, ferromagnetic materials, and electrode materials. However, the challenge of controlling their chemical synthesis, solubility, polycrystallinity and nanogeometry have restric…
The use of superparamagnetic nanocrystals (MNPs) for biomedical applications generally requires a synthetic route in which the resultant MNPs are water soluble and biocompatible with good morphology and size distribution control, as well as optimized hydrodynamic size. To achieve this, hydrophobic MNPs are typically s…
The 12% Cerium (Ce) and 10% Manganese (Mn) were doped at A and B sites respectively in BiFeO3 (BFO) thin films along with incorporation of 5% excess Bi. Pure and undoped BFO thin film capacitors are fabricated on indium tin oxide (ITO) coated corning glass and silicon substrate by chemical solution deposition (CSD) me…
The electronic structure of antiferromagnetic CaFe2O4 is calculated by using a generalized gradient approximation considering on-site Coulomb interaction between d-electrons (GGA+U). We found that the antiferromagnetic phase is the most stable among non-magnetic, ferromagnetic, and antiferromagnetic phases. With GGA+U…
Understanding the partitioning of organic molecules between aqueous solution and lipid membranes is critical to problems in fields ranging from drug design to environmental science to studies of the origin of life. Here, six β-substituted porphyrins of diverse polarity were examined for partitioning between the membra…
Five mixtures (M1 to M5) of silica-alumina geomaterials and two varieties of alumina (AP and AR) were used for the elaboration of mullite refractory materials between 1500℃ and 1600℃. An X-ray diffraction (XRD) analysis showed that the refractory samples are composed of mullite, corundum and silica. The length of the…
We report the design, synthesis and optical properties of a fluorescent HABI-based photochrome, which exhibits high fluorescence quantum yield (ΦF = 25%) and efficient quenching in the dissociated state. Efficient contrast fluorescence switching and good reversibility are also demonstrated. We demonstrate the merits o…
With the use of 31 P NMR spectroscopy and gas chromatography-mass spectrometry, the partial ammonolysis of PCl 5 by ammonium chloride in chlorobenzene in the presence of zinc chloride is investigated. The use of zinc chloride reduces the reaction time to 1.5 h and increases the yield of oligomeric chlorophosphazenes u…
Ionomers with short ethylene oxide side chains are synthesized by free radical polymerization; to systematically test effects of solvating anion and cation, including directly substituting the ion attached to the polymer with its counterion.
Palm and soya oils were converted to monoglycerides via transesterification of triglycerides with glycerol by one step process to produce renewable polyols. Thermoplastic polyurethanes (TPPUs) were prepared from the reaction of the monoglycerides which act as polyol with 4,4'-methylenediphenyldiisocyanate (MDI) wherea…