Materials Literature
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The effect of individual and combined additions of Y and Sb on the microstructure and mechanical properties of AZ91 alloy has been studied. The results indicate that the additions introduce new Al2Y and Mg3Sb2 phase along with the Mg17Al12 -β phase besides, refining the grains significantly. It can be seen that the β…
Six novel molybdenum hybrid materials based on a flexible multidentate ligand, namely (H3tib)4(β-Mo8O26)3·5H2O (1), (H3tib)2[Cu(H2O)2(γ-Mo8O26)2]·2H2O (2), [Cu(Htib)2(δ-Mo8O26)]·4H2O (3), [Cu2(tib)2(H2O)2(γ-Mo8O26)]·H2O (4), (H3tib)2[Co(H2O)2(γ-Mo8O26)2]·2H2O (5), and Zn(tib)(MoO4)·3H2O (6) (where tib = 1,3,5-tris(imi…
Results on the conversion of rape oil into the alkane-aromatic fraction in the presence of a prototype of a MFI-based industrial catalyst (Si/Al = 30) promoted with 0.6 wt % Pd and 1 wt % Zn are presented. It has been shown that an increase in the process temperature from 360 to 420°C leads to a significant increase i…
Vibrational spectra of the spin crossover (SCO) polymers [Fe(NH2trz)3](X)2·nH2O where NH2trz = 4-NH2-1,2,4-triazole and X = Cl, Br, BF4, and NO3 have been analyzed. Our results show that the anions and water molecules have no significant influence on the vibrational properties of the Fe(NH2-trz)3 polymer chains. A det…
Novel nano Al 2 O 3 /phosphate composite conversion coatings with no visible defects were formed on AZ91D magnesium alloy in a phosphate solution containing Al 2 O 3 nanoparticles by applying a magnetic field. The formation of these coatings was investigated using the synchrotron radiation real-time imaging technique.…
The effect of synthesis temperature on the morphology and stability of copper(I) hydride nanoparticles is studied. Monovalent copper hydride is obtained by reduction of Cu2+ sulfate with hypophosphorous acid at temperatures ranging from 45 °C to 75 °C. The CuH nanoparticles that formed have the shape of desert roses a…
The ability to produce catalytic nanoparticles with controlled properties is key to developing and producing heterogeneous catalysts with optimized activity and selectivity. No less important is to maximize the nanoparticle dispersion over high area supports maintaining their optimized properties. Here we detail a gen…
The effect of water, in the temperature range 25-350 °C, and ammonia at RT on two different surface species formed on Pt-K/Al2O3 and Pt-Ba/Al2O3 NSR catalysts during NO(x) storage-reduction cycles was investigated. The surface species involved are nitrates, formed during the NO(x) storage step, and isocyanates, which…
Armchair silicene nanoribbons with width of 9–39 silicon atoms are investigated by using the self-consistent field crystal orbital method based on density functional theory. The carrier mobilities obtained from deformation potential theory oscillate with respect to the width and the values are comparable with those th…
A poly(vinylidene fluoride) nanohybrid membrane has been prepared using high energy swift heavy ions (SHI) followed by chemical functionalization. Through-channels were generated by selective etching of the amorphous latent track created during irradiation of SHI, whose average dimensions are varied from 52 nm in pure…
Colorectal carcinoma (CRC) is the 3rd most common cancer worldwide, thus development of novel therapeutic strategies is imperative. Herein potent, selective dose-dependent antitumor activity of horse spleen apoferritin encapsulated PbS quantum dots (AFt-PbS) against two human-derived colorectal carcinoma cell lines is…
Conducting polymer hydrogels consisting of polypyrrole (PPy) and chitosan (CS) are prepared by static polymerization of pyrrole using methyl orange (MO) as the dopant and Fe2(SO4)3 as the oxidant in the CS aqueous solution. PPy/CS composite hydrogels not only have good electrical conductivities, but also exhibit excel…
In this study, spherical superparamagnetic iron oxide nanoparticles (SPION) with mean diameter of 6 nm were prepared by means of a reduction-precipitation method. The surface of SPION were coated with poly(acrylic acid) 5000 (PAA-5000) and followed by loading of anticancer drug doxorubicin. Drug loading efficiency was…
Nanocrystalline Sc2O3 (different doping content) stabilized ZrO2 (ScSZ) powders are prepared by the hydrothermal method. Dense ScSZ ceramic pellets are fabricated by isostatically pressing then sintering at 1350°C for 2 h. 8 mol% Sc2O3 doped Zirconia possesses the highest conductivity of all the samples measured by im…
We demonstrate single-order operation of Lamellar Multilayer Gratings in the soft x-ray spectral range. The spectral resolution was found to be 3.8 times higher than from an unpatterned multilayer mirror, while there were no significant spectral sideband structures adjacent to the main Bragg peak. The measured spectra…
New benzimidazole/benzothiazole imide derivatives with different alkyl substituent chains were designed and synthesized. Their gelation behaviors in 22 solvents were tested as novel low‐molecular‐mass organic gelators. The test showed that the alkyl substituent chains and headgroups of benzimidazole/benzothiazole resi…
A novel and highly sensitive fluorescence probe has been developed for determination of ascorbic acid (AA) based on the distinct fluorescence quenching of Mn-doped CdTe fluorescence emission in the presence of AA. Mn-doped CdTe quantum dots were prepared by using inorganic salts as precursors and L-cysteine as the sta…
BACKGROUND: Pneumococcal virulence factors common to all serotypes, such as choline-binding proteins (CBPs), are promising therapeutic targets in pneumococcal infections. We studied the effect of a choline dendrimer with maximized binding affinity/specificity for CBPs on microglia-mediated pneumococcal phagocytosis. M…
The introduction of nanostructures has been considered as one of the promising strategies to enhance the thermoelectric performance of bulk materials. In this work, we report a low-cost and facile aqueous solution method to prepare (Sb, Bi)2(Te, Se)3 nanocrystals with controllable composition and morphology by using s…
The nickel(II) spin state in a series of N4-donor macrocycles differing in the number of imine bonds is tuned from low spin (2 imines) to low or high spin (1 imine; non- or coordinating co-ligand) to high spin (no imines).