Materials Literature
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Abstract A termetallic catalyst of Pt‐Ir‐Au/Al 2 O 3 for NO x decomposition was prepared by loading the metallic colloids in C 2 H 5 OH‐H 2 O solution and a surfactant of polyvinyl pyrrolidone. Compared with an impregnated Pt/Al 2 O 3 catalyst, the termetallic catalyst of PtIrAu811/Al 2 O 3 , with a Pt:Ir:Au atomic ra…
Homoepitaxially grown single crystal CVD diamond has a dislocation arrangement not seen in natural IIa diamond. Whereas in the latter, dislocations lie on (111) planes along [1 0] directions, dislocations in CVD diamond lie nearly along the [001] growth axis and are arranged in bundles with almost four fold rotational…
Use of reclaimed rubber as a component of a blend with virgin rubber or as a replacement for the virgin material in most rubber applications, especially in tyre components, has increased in the recent past. This is due to the increase in prices of natural and synthetic rubbers and growing concern about environmental i…
This paper reports that the Si + self-ion-implantation are conducted on the silicon-on-insulator wafers with the 28 Si + doses of 7×10 12 , 1×10 13 , 4×10 13 , and 3×10 14 cm −2 , respectively. After the suitable annealing, these samples are characterized by using the photoluminescence technique at different recorded…
Water-soluble cationic cobalt(tetra(N-methyl-pyridyl)porphyrins, CoTMpyP(4) and CoTMpyP(2) and the β-pyrrole octabrominated derivative CoTMpyP(4)Br 8 have been studied by cyclic voltammetry under aqueous aerobic conditions at pH of 4.0 with and without addition of nitrite to explore their ability to catalyze the reduc…
Abstract The stabilization effect of pentaerythritol (Pe) combined with calcium and zinc stearates (CaSt 2 /ZnSt 2 ) on chlorinated poly(vinyl chloride) (CPVC) is investigated. Congo red and dynamic thermal stability data indicate that Pe alone has a mild stabilizing effect on the degradation of CPVC. Addition of mixe…
Due to the chemically unstable nature of uranium dioxide its vapor composition at very high temperatures is, presently, not sufficiently studied though more experimental knowledge is needed for risk assessment of nuclear reactors. We used laser vaporization coupled to mass spectrometry of the produced vapor to study u…
In this work, an extensive experimental data of Nansulate coating from NanoTechInc were applied to develop an artificial neural network (ANN) model. The Levenberg–Marquart algorithm has been used in network training to predict and calculate the energy gain and energy saving of Nansulate coating. By comparing the obtai…
In this work, we have investigated the influence of rapid thermal annealing (RTA) on structural and optical properties of ZnO nanorods synthesized by a mechanochemical reaction route using a planetary ball mill for different reaction time durations. Optical properties of as-grown and RTA-annealed samples are studied b…
X-ray diffraction analysis and high-resolution electron microscopy of BiFeO3 films prepared by dc magnetron sputtering on single-crystal LaAlO3 (001) substrates reveal that the films have a highly c-oriented orthorhombic crystalline structure. The magnetic properties of the BiFeO3 films are typical of ensembles of int…
The results on the study of grain boundary effects and influence of film deposition conditions on the magnetoresistance and its anisotropy in polycrystalline La0.83Sr0.17MnO3 films are presented. The magnetoresistance was measured in high pulsed magnetic fields up to 25 T (pulse duration 0.6 ms) in the temperature ran…
We report on the mechanism of the dielectric properties of oxygen vacancy in ZnO, using ab initio numerical simulations of oxygen vacancy on the band structure and dielectric properties, to develop photoelectric material applications. It is revealed that the appearance of oxygen vacancies leads to wider energy band ga…
A method of preparing MF-4SK membranes with the anisotropic distribution of aniline over the thickness is developed. The processes of aniline polymerization in the matrix of the MF-4SC sulfocationite membrane are investigated via electronic-absorption and IR spectroscopy. The processes of ion transport in the obtained…
This work reports the synthesis of three polymers and two new copolymers based on 3-substituted polythiophene derivatives, all of them demonstrated photoluminescent properties. All polymers synthesized, i.e., poly(3-methoxythiophene) (PMOT), poly(3-thiopheneethanol) (PTE), poly(3-thiophenemethanol) (PTM), poly(3-metho…
This study investigates the effects of fiber loading and coupling agent on the performance of EFB fiber composites of oil palm biomass. The dried EFBs were ground in random sizes for composite production. Fiber composition and fiber morphology were evaluated by SEM and EDAX. Ground fiber was compounded with PP by mean…
Two types of dispersions, namely, resonancelike and relaxationlike dispersions, and their significantly different high-frequency magnetic properties and attenuation characteristics have been studied for barium ferrite composites BaCoxZn2−xFe16O27 with x=0.5–1.3. The composites with x=0.5, 0.6, and 0.65 have c-axis ani…
Copper Iodide based dye-sensitized solar cells (DSSC) has been reported either deliver small photocurrents or highly unstable. In this research, by added in a small amount of Tetra-methyl-ethylene-diamine (TMED) into CuI sol-gel (CuI in acetonitrile), performance of electrical properties and optical properties of CuI…
The microstructure of mechanocomposites produced by mechanical alloying of Ti and Al powder mixtures in high-energy planetary ball mill has been studied by the methods of transmission electron microscopy and X-ray diffraction analysis. The formation of highly defect structural states with high magnitudes of the crysta…
A method is proposed for calculating the entropy of plastic deformation from IR scanning data and for determining the refined thermodynamic parameter (Gibbs free energy) of the system under quasistatic straining. The method is based on the assumption that the specific heat of the material does not depend on the stored…
For in-situ bonding of pultruded rod into timber structural members, such as in the construction of bonded-in timber connection, strengthening and repair of timber structures, the adhesive used must be thixotropic, room temperature cure, environmentally stable and friendly and applied at without pressure. This study i…