Materials Literature
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For recycling steel work dust and improving blast furnace (BF) performance, a few types of non-spherical carbon-iron oxide agglomerates were manufactured in laboratory scale and their strength and reducibility were evaluated using a shatter and a tumbler tester, a simulator for lumpy zone in BF and a softening/melting…
The copper precursors bis-hexafluoroacetylacetonato-copper vinyl-trimethyl-silane-copper(I)-hexafluoroacetylacetonate (hfac)Cu(VTMS), 2-methyl-1-hexen-3-yne-copper-hexafluoroacetylacetonate (hfac)Cu(MHY), and dimethylbutene-copper(I)-hexafluoroacetylacetonate (hfac)Cu(DMB) are compared with respect to deposition rates…
The synthetic flavylium salt 7-(N,N-diethylamino)-4'-hydroxyflavylium tetrafluoroborate gives rise in aqueous solution to a complex network of chemical reactions driven by pH. The system was studied by 1H NMR, single crystal X-ray diffraction, steady state and transient UV-Vis spectrophotometry as well as stopped flow…
New conducting polymers, including poly[thieno[3,2-b][1]benzothiophene] (poly-TBT) and poly [6-methoxythieno[3,2-b][1]benzothiophene] (poly-MeOTBT) were electrosynthesized by anodic oxidation of the corresponding monomers in 0.1 M LiClO4 acetonitrile solution. Poly-TBT and poly-MeOTBT electroactive films were formed o…
We have investigated the complexation of lanthanide ions (Nd3+, Eu3+, Gd3+, Tb3+, Dy3+) with three cyclam-based ligands (cyclam = 1,4,8,11-tetraazacyclotetradecane), namely 1,4,8,11-tetrakis(naphthylmethyl)cyclam (1), and two dendrimers consisting of a cyclam core appended with four dimethoxybenzene and eight naphthyl…
The multi-layered electroluminescent device consisting of Eu(TTA)3(2,2′-bipyridine mono N-oxide) (TTA = 2-thenoyltrifluoroacetonate) as the red dopant exhibited an impressive current and power efficiency at a brightness of 100 cd m−2 and voltage-independent spectral stability.
The structure and orientation of polymer and clay platelets in multilayered, micrometer-thick nanocomposite films was investigated by means of scanning electron microscopy (SEM), atomic force microscopy (AFM), optical microscopy and small-angle neutron scattering (SANS). Microscopic and scattering methods complementar…
Direct liquid crystal templating from non-ionic polyoxyethylene surfactants has been utilised to produce well-defined birefringent films of nanostructured cadmium telluride films which displayed good optical properties as evidenced by UV/VIS reflectance spectroscopy.
4,4'(5')-Bis[2-(9-anthryloxy)ethylthio]tetrathiafulvalene bearing an electron-rich tetrathiafulvalene unit and a luminophore of anthracene shows a highly selective and sensitive chemiluminescence response to singlet oxygen.
The synthesis of the first tetraaza[3,3]ferrocenophane, from the previously unreported 1,1'-bis(triphenylphosphoranylidenamino)ferrocene and its conversion into a nitrogen-rich [2,2]bis[3,3]ferrocenophane is described. The electronic behaviour of these multinuclear ferrocenophanes indicates a strong electronic couplin…
A 30 vol% aqueous suspension of SiC/Al2O3/Y2O3 (1/0.02/0.016 volume ratio) system was consolidated by filtration through gypsum mold. The green compact was hot-pressed at 1700–1900°C under a pressure of 39 MPa in an Ar atmosphere. The sintering mechanisms were discussed based on the analysis of shrinkage curves of SiC…
A (2+1)D kinetic Monte Carlo (KMC) code was developed for coarse-grained as well as atomic-scale simulations that require detailed consideration of complex surface-reaction mechanisms associated with electrodeposition of copper in the presence of additives. The physical system chosen for simulation is similar to that…
We report a simple, one step and efficient method to deposit Si nanoparticles on the surface of in situ formed carbon spheres. This report emphasizes Si deposition on carbon spheres from the thermal decomposition of TEOS at 700 °C in a closed Swagelok cell in an inert atmosphere.
Manufacturing industry uses a large variety of materials for the manufacture of goods today. Among the most important of these are metals, alloys , and plastics. Different kinds of metals and alloys are required for different purposes, and the diagram given below shows some of the metals and alloys that are in common…
The pitting corrosion of aluminum was investigated by measuring electrochemical noise using interconnected electrodes, together with an artificial-pit technique and a corrosion-visualizing method employing an agar gel containing a pH indicator. The electrochemical noise in chloride solution at open circuit shows disti…
A multicomponent reaction involving ethylenediaminepalladium(II), 2-pyrimidinol derivatives (L) [L=2-pyrimidinol (a); 4-methyl-2-pyrimidinol (b); 4,6-dimethyl-2-pyrimidinol (c)] and 4,7-phenanthroline (4,7-phen) leads to the formation of heterotopic cyclic metallamacrocycles of the type [Pdn(en)n(mu-N,N'-L)m(mu-N,N'-4…
Copper oxide was used to modify zeolite NaY, NaZSM-5, NaA and mesoporous siliceous SBA-15, in order to strengthen their ability to remove volatile nitrosamines. Selective adsorption, temperature programmed surface reaction (TPSR) and FTIR along with TG-MS methods were employed to study the impact of copper modificatio…
In this communication, a conceptually new approach to the delivery of magnetic resonance imaging (MRI) contrast agents is presented. Our experiments demonstrate the feasibility of using silica-embedded iron oxide nanoparticles as contrast agents in magnetic resonance imaging, where a reduction in signal intensity (inc…
The big surface pores of a porous stainless steel (PSS) tube filter with marked roughness were jammed with aluminium hydroxide gel by a combination of ultrasonic vibration and vacuum suction, then a thin dense Pd membrane (6 microm) was plated in-situ on this pre-jammed filter by a multi-dimensional plating mechanism;…
The morphological and chemical changes occurring during the thermal decomposition of weddelite, CaC 2 O 4 ·2H 2 O, have been followed in real time in a heating stage attached to an Environmental Scanning Electron Microscope operating at a pressure of 2 Torr, with a heating rate of 10 °C/min and an equilibration time o…