Materials Literature
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Sub-nanometric Pd clusters on porous nanorods of CeO2 (PN-CeO2) with a high Pd dispersion of 73.6% exhibit the highest catalytic activity and best chemoselectivity for hydrogenation of nitroarenes to date. For hydrogenation of 4-nitrophenol, the catalysts yield a TOF of ∼44059 h(-1) and a chemoselectivity to 4-aminoph…
Sulfur is a promising cathode material for lithium-sulfur batteries because of its high theoretical capacity (1,675 mA h g(-1)); however, its low electrical conductivity and the instability of sulfur-based electrodes limit its practical application. Here we report a facile in situ method for preparing three-dimensiona…
The purpose of carried out examination was to determine the effect of solution heat treatment on the structure and corrosion resistance of the ZnAl40Cu3 alloy in the "acid rain" environment. The scope of the test included Brinell hardness tests, structural tests and galvanostatic and potentiodynamic tests. The examina…
The paper deals with the modeling and simulation of a Ni-Ti alloy wire actuator heated by an electrical resistance and cooled by natural air. In general, the model consists of non-linear static and dynamic parametric differential equations and dominant thermal hysteresis with memory. The paper deals with a modificatio…
Novel electrically conductive SWCNT-reinforced composites were studied in this work. Incorporating SWCNT into CB/polymer composites provides lowering the percolation threshold. Adding a small quantity of single-walled carbon nanotubes into CB/polymer composites allows reducing CB content in electrically conductive com…
Electroclinic measurements are reported for two chiral liquid crystals above their bulk chiral isotropic-nematic phase transition temperatures. It is found that an applied electric field E induces a rotation θ [∝Ε] of the director in the very thin paranematic layers that are induced by the cell's two planar-aligning s…
ZnO quantum dots (QDs) are anchored on graphene oxide (GO) by a wet chemical self-assembling technique. Firstly, GO are functionalized with thiol (f-GO) by a series of chemical reactions and the ZnO alcogel are prepared by a sol–gel process. Secondly, the f-GO/ZnO composite is obtained by a self-assembling technique.…
The use of nanodiamonds to improve the photocatalytic hydrogen evolution reaction of Cu2O by nanocomposition is demonstrated for the first time by Guowei Yang and co-workers in article number 1501865. Compared with pure Cu2O, this nanocomposite shows a tremendous improvement in performance. It is also established that…
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Masonry is a complex multicomponent composite composed of dissimilar materials (brick / stone and mortar). The process of masonry deformation under load depends on the mechanical characteristics of the basic composite materials, as well as of the parameters belonging to the elements, which define the link between bric…
Ammonia borane (NH3BH3, AB) is an excellent source of hydrogen(19.6 wt %) for fuel cell applications. In this paper, pure ammonia borane is successfully prepared by using amino complex for ammonia complex Ag(NH3)2Cl as new ammonia source, and sodium borohydride (NaBH4) as boron source. The composition and constitution…
The corrosion behavior of carbon steel in PO-6TS-M foaming solution was studied. Several kinds of inhibiting additives were tested for their ability to reduce the corrosion rate of steel. The antipyrene additive to the foaming solution was shown to be the most effective in reducing corrosion rate of carbon steel. The…
The influence of fine-disperse iron oxide particles on the structure of alumina fibers prepared via the template synthesis has been studied. The template (fibers of bleached cotton cellulose) has been impregnated with mixed aqueous dispersions of aluminum and iron(III) hydroxides prepared via the sol–gel route. Therma…
A finite element method was applied to study the various severe plastic deformation processes like, Equal Channel Angular Pressing (ECAP), Tubular Channel Angular Pressing (TCAP), Repetitive Upsetting and Extrusion (RUE) and Constrained Groove Pressing (CGP), considering aluminum AA-390 alloy as specimen material for…
Single-phase polycrystalline La0.75Sr0.25Co0.98 57Fe0.02O3 samples have been prepared by solidstate ceramic technology. The samples have the rhombohedral structure (space group $$R\bar 3c$$ ). The studies of perovskite La0.75Sr0.25Co0.98 57Fe0.02O3 by Mössbauer spectroscopy on impurity 57Fe nuclei in the temperature r…
Electroless Nickel-Phosphorus (ENi-P) coating is well-known in surface engineering techniques and is preferred in various mechanical, chemical and electronic industries view its extraordinary resistance to wear and corrosion. The paper summerizes the effect of surfactant on the mechanical properties of electroless Nic…
The Editor and publisher have retracted “Manipulating fluorescence color and intensity with regular nanoparticle-based composite materials” Appl. Phys. Lett.108, 051112 (2016). Because of a legal issue related to the publication of work covered under a confidentiality agreement, the electronic version of the paper has…
In this paper we presents the synthesis process of the GdMn 1-x Fe x O 3 perovskite material by conventional solid state reaction method. Crystalline phase evolution during the synthesis was studied by X-ray Diffraction (XRD) in powder of the materials, observing that the chemical reaction of the precursor oxides was…
Intermetallic compounds Al 13 Co 4 , Al 13 Fe 4 , and Al 13 Co 2 Fe 2 were obtained by solid-phase synthesis in air at temperatures below 600°C using precursor metals subjected to mechanochemical preactivation. The phase composition of the synthesized aluminides and composites Al 13 Co 4 /SiO 2 and Al 13 Fe 4 /SiO 2 w…
The structures under different pressures, elastic properties, electronic structures and lattice vibrations of the X 2 N 2 O ( X = C, Si, Ge) compounds are investigated by using the first-principle method. Based on the phonon density of state, the thermodynamic properties of the present compounds are studied under diff…