Materials Literature
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We have studied the CO oxidation over neutral, anionic, and cationic gold hexamer clusters using density functional theory which elucidates the effect of cluster charge state on the catalytic activity. Herein, we have considered the conventional bimolecular Langmuir–Hinshelwood mechanism with coadsorbed CO and O 2 at…
Crystal habit of drug molecules can have significant influence on the processing and performance of pharmaceutical products. During the development of Trilipix, a pharmaceutical product used for the treatment of mixed dyslipidemia, several crystal habits were observed for the active ingredient choline fenofibrate. The…
The (Pr1−yYy)0.7Ca0.3CoO3 compound (y = 0.0625, TMI-SS=40 K), at the lower limit for occurrence of the first-order metal-insulator (MI) and simultaneous spin-state (SS) transitions, has been studied using electrical resistivity and magnetization measurements in magnetic fields up to 17 T. The isothermal experiments de…
In order to prevent corrosion, aluminum nanoparticles were coated with a polyurethane polymer. The coverage of the polyurethane polymer was controlled from 0 to 100%, which changed the corrosion rate of the nanoparticles quantitatively. The surface of the polymer coating was investigated by Transmission Electron Micro…
Octamolybdate complexes TBA4[Mo8O26(BiX3)2] (TBA = n-tetrabutylammonium, X = Cl (1), Br (2), I (3)) were obtained by straightforward syntheses from TBA4[Mo8O26] and corresponding Bi(III) halides in MeCN. All compounds were structurally characterized; in all cases, {BiX3} fragments are coordinated by two oxygen atoms o…
The authors report the fabrication of amorphous IGZO (a-IGZO) phototransistors with a thin Ga2O3layer. It was found that the performances of the phototransistors depend strongly on the oxygen partial pressure during the deposition of the Ga2O3layer. It was also found that the fabricated devices exhibited good electric…
Fe3O4 and ZnxFe3-xO4 pure and doped magnetite magnetic nanoparticles (NPs) were prepared in aqueous solution (Series A) or in a water-ethyl alcohol mixture (Series B) by the co-precipitation method. Only one ferromagnetic resonance line was observed in all cases under consideration indicating that the materials are ma…
The effect of (He–Ne) laser irradiation for different irradiant times on optical properties of (10 ml) methyl orange doped PVA films were investigated. The films were prepared by casting method. Absorption and transmission spectra for all samples were measured by UV-Visible spectrophotometer. All optical constants aff…
In this research, the CNT coating treatment process involves the growth of CNTs onto the surface of the carbon fibre by floating catalyst techniques using CVD. The amount of ferrocene concentration has been varied throughout this study. Different morphologies of structured CNTs through TEM instruments are discussed an…
In this study, the hydrogen response of Pt-coated WO3H2O nanoplates before and after annealing is investigated and the interaction mechanism is revealed using in situ Raman spectroscopy and quasi in situ x-ray photoelectron emission spectroscopy. We find that structural water molecules form in the nanoplate during its…
Five Cu(II) hydroxo-bridged complexes of the type [Cu 2 (μ-OH) 2 (L) 2 ][A] x ·yH 2 O (where L = 1,10-phenanthroline, A = NCS – , x = 2, y = 2 (1); L = 2,2′-bipyridine, A = NCS – , x = 2, y = 1 (2); L = 2,2′-bipyridine, A = [Au(CN) 4 ] – , x = 2, y = 0 (3) and 2 (4); L = N,N,N′,N′-teteramethylethylenediamine, A = [Pt(…
ABSTRACT The high abrasion furnace (HAF), fast extrusion furnace (FEF), and fine thermal (FT) loadings used in this study were adjusted to keep the carbon black (CB)–specific area of cetyl trimethyl ammonium bromide adsorption to 2490 m 2 g −1 . Their polyisoprene (IR) compounds and vulcanizates were investigated. Reg…
To simulate the interfacial behaviors in real heterogeneous systems, the point contact condition is constructed to study the classical immiscible displacement problem in this work. Specifically, the interfacial dynamics during the water droplet passing through the oil capillary bridge formed under the point contact co…
9-tert-Butylanthracene undergoes a photochemical reaction to form its strained Dewar isomer, which thermally back-reacts to reform the original molecule. When 9-tert-butylanthracene is dissolved in a polymer host, we find that both the forward and reverse isomerization rates are pressure-dependent. The forward photore…
The sensitive detection of small molecules analytes at very low concentrations is of great interest, notably in the medical and environmental fields. In this study, two porous solids, namely SiO 2 ( d pore ≈ 5 nm) and Ag@SiO 2, were prepared. In the latter, the incorporation of Ag nanoparticles in the porous matrix wa…
A hybrid structure of a gold-nanoparticle (Au-NP)/diamond-nanopit has been fabricated by using a simple procedure of oxygen plasma etching of a Au-coated single crystal diamond. The nanopit is of an inversely truncated pyramidal shaped, and is filled with a Au NP located at the bottom. The formation process is thoroug…
The interfacial property of reverse micelles is an important factor affecting the catalytic activity of enzymes hosted in the micelles. In this article, the effect of gold nanoparticles (GNPs) on the catalytic activity of laccase (non-surface-active enzyme) and the related mechanism are reported. It was found that lac…
The electronic and magnetic properties of tetravalent-ion-doped La0.85Zr0.15MnO3 (LZMO) thin films that were epitaxially grown on SrTiO3 (STO) and MgO substrates were studied using temperature-dependent x-ray diffraction (XRD), x-ray absorption near-edge structure, x-ray linear dichroism, and x-ray magnetic circular d…
ABSTRACT Bacterial cellulose (BC), microcrystalline cellulose (MCC), and bamboo cellulosic fibers (BCFs) were used to reinforce poly( l ‐lactic acid) (PLLA) based bio‐composites. The mechanical properties and crystallization of the composites were studied through mechanical testing, differential scanning calorimetry,…
In concentrated polymer solutions, the concentration (ϕ) dependence of the terminal relaxation time τ d reflects ϕ-dependent changes of several factors, the monomeric friction ζ 0 (ϕ), the entanglement length, a (ϕ), and the correlation length, ξ(ϕ). Usually, the effect of the latter two factors on τ d can be cast in…