Materials Literature
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BaZrO3 nanofibers were electrospun from a 0.25 M metal cation solution containing barium acetate and zirconium 2,4-pentadionate dissolved in glacial acetic acid. Polyvinylpyrrolidone was added to increase the solution viscosity and allow formation of hollow fibers during electrospinning. Microstructural evolution duri…
This work presents a novel way to introduce gold nanoparticles (Au NPs) in a multilayer polymer produced by the layer-by-layer (LbL) assembling technique. The technique chosen shows that, depending on the pH used, different morphological structures can be obtained from monolayer or bilayer Au NPs. The MEIS and RBS tec…
Aromatic nitrones have been synthesized and investigated for their function as inhibitor for the corrosion of mild steel in the organic acid media -20% formic acid and 20% acetic acid at various inhibitor concentrations in the range of 50 -150 ppm. Weight loss measurements and potentio-dynamic polarization studies rev…
Compact spinning with a pneumatic groove utilises the transverse air force and mechanical force of the pneumatic groove to condense the fibre bundle in order to eliminate the spinning triangle. This paper analyses the twist resistance moments and torsion moment in the process of twist propagation. Results from this re…
Colloidosomes are composed of an aqueous or hydrogel corethat is coated by a semi-permeable colloidal shell. The properties of the shell can be varied to control the rate of release of encapsulated components such as drugs. Specifi-cally, the pores formed between the colloidal particles suppress transport of large com…
Large scale first-principles calculations based on density functional theory (DFT) employing two different methods (atomic orbitals and plane wave basis sets) were used to study the energetics, geometry, the electronic charge redistribution and migration for adsorbed atomic and molecular oxygen on defect-free SrTiO3(0…
The present study developed a novel, fast and efficient method to synthesize one dimensional nanotube-based materials via supercritical reactions and supercritical fluids. It was proved that supercritical organic fluids were good media to take materials into the nanocavity, not only as solvents but also as reaction ag…
Here we report the observation of significantly enhanced fluorescence from molecules placed inside a silver nanocavity, as compared to those without the silver coating.
Preirradiation graft polymerization of styrene in a poly(tetrafluoroethylene) (PTFE) film was examined by time-resolved small-angle neutron scattering (SANS). A crosslinked PTFE film, thickness of which is about 50 μ m, was irradiated by γ -ray and immersed in a mixed solvent of styrene monomer and toluene. SANS eluci…
Using density functional theory, we consider the adsorption of C on graphene, which gives rise to many interesting phenomena. A single-C at the bridge site shows a clearly covalent-bond feature with graphene, in which the metallic state occurs and a magnetic moment of 0.36 μ(B) was determined. For both-sided adsorptio…
The production of new materials by mixing together more than two raw materials is a useful method from the viewpoint of waste disposal. However, a number of trials and errors are required to produce the desired material. It is therefore important to clarify the target to improve the efficiency of production. In this s…
One multifunctional small molecule can undergo a natural condensation reaction under the control of reducing agent to generate amphiphilic oligomers which quickly self-assemble supramolecular nanoparticles or form crosslinked, reversibly degradable polymers.
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In this study, strongly luminescent non-toxic CuInS 2 -ZnS (ZCIS) alloy nanocrystals were synthesized using inorganic precursors and noncoordinating solvents. The emission wavelength was tuned from 575 nm to 655 nm by introducing the different ratios of Zn doped into a CuInS 2 lattice. A further blue shift was observe…
Nanostructured ternary manganese(IV) oxides are of importance as electrode materials. A low-temperature, precursor mediated route has been designed to obtain ternary oxides containing Mn(IV) and Zn(II) at ambient pressure. The defect spinel, Zn0.83(Mn1.42Zn0.34)O4 was obtained by annealing at optimal conditions after…
Ceramic solid solutions (1-x)(Bi0.9Nd0.1)(Sc0.9B0.1)O3 - xPbTiO3 (x = 0.60–0.66; B - Lu, Yb, Er, Y) based on the compositions close to the morphotropic boundary, have been prepared. To improve the phase content and the resistance of ceramics, Bi2O3 and MnO2 additives were used. Phase composition, structure, microstruc…
Adsorption of Fe, Co and Ni atoms on a hybrid hexagonal sheet of graphene and boron nitride is studied using density functional methods. Most favorable adsorption sites for these adatoms are identified for different widths of the graphene and boron nitride regions. Electronic structure and magnetic properties of the T…
We present exemplary results of extensive studies of mechanical, electric, and magnetic properties of functionalized carbon nanotubes (CNTs). Our studies are based on the ab initio calculations in the framework of the density functional theory (DFT). We have performed calculations for various metallic and semiconducto…
The effect of Al addition on the reversibility of a MgH2+2LiBH4 hydrogen storage mixture was examined in order to improve the mixture’s requirement for a hydrogen atmosphere even in dehydrogenation. The experiments using high pressure differential scanning calorimetry and X-ray powder diffraction confirmed that a MgH2…
We report a method for synthesizing quasi-single crystalline porous ZnO nanostructures containing a single large cavity. The microwave-assisted route consists of a short (about 2 min) temperature ramping stage (from room temperature to 120 °C) and a stage in which the temperature is maintained at 120 °C for 2 h. The s…