Materials Literature
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A supercapacitor electrode was synthesized by cyclic voltammetric plating of onto a porous and highly conductive, Sb (6 mol %)-doped particulate substrate that possessed a large surface area A specific capacitance of 930 F/g for the component in 1 M and an overall specific energy of at a specific were achieved by an o…
The crystals of Na 2 Ti 3 O 7 were obtained by crystallization from flux. The structure of the compound was refined from X-ray diffraction data collected on a four-circle diffractometer (2θ/θ scanning technique, λMo K α radiation, graphite monochromator, θ max = 40°). The crystals are monoclinic a = 9.133(2) Å, b = 3.…
The effective diffusivity of in porous media was measured at high temperatures (650-800°C) using an electrochemical concentration cell. Porous membranes having total porosity between 29 and 48 vol% were fabricated from Sr-doped (LSM) with 20 to 30 wt% carbon added as a pore former. The effective binary diffusivity, at…
A new series of linearly extended tetrathiafulvalene analogues with thienothiophene and dithienothiophene π-conjugating spacers has been synthesized. Electronic absorption spectra present a vibronic fine structure typical for rigid conjugated systems. Investigation of the electrochemical behaviour of the new donors by…
The mechanism of NOx storage on Pt–Ba/Al2O3 and, for comparison, on Ba/Al2O3 catalysts was investigated. In situ FT-IR spectroscopy was used to follow temporal changes in the types and relative amounts of surface species formed at three different temperatures (423, 523, 623 K) during the reaction with NO, NO/O2, NO2 o…
Carbon and alumina are important components in refractories used in the steel industry. High temperature interactions of the refractory materials with liquid metal are crucial in dictating the chemical reactions occurring at the interface, this will control the life of refractory and also the metal quality. Although,…
Two phases produced through the liquid-liquid separation gravitationally segregate during solidification of the monotectic alloys. This paper examined reduction of the gravity segregation for the Cu-Pb monotectic alloys by imposing a static magnetic field up to 10 T. The Cu-Pb alloys with compositions ranging from 15.…
Complete cleavage of double stranded pUC19 DNA by the complex [Cu(dpq)2(H2O)](ClO4)2 (dpq, dipyridoquinoxaline) has been observed on irradiation at 694 nm from a pulsed ruby laser, assisted by the metal d-band transition as well as the quinoxaline triplet states in the absence of any external additives.
Cerium oxide thin films have been produced by anodic electrodeposition with a preferred orientation onto a variety of substrates. The Ce(III) ions are complexed with suitable organic ligands in solution to form stable complexes in basic pH solutions. Ligands with mild complexing power are suitable for the formation of…
Multicomponent thermochromic systems contain a dye, a colour developer, and a solvent. Dye–developer interactions, including complex formation, have been examined in our previous study. In this paper, the interactions between the same developer (lauryl gallate) and a solvent (1-octadecanol) are characterised both thro…
Faster- and slower-relaxing versions of the title Mn12 compound have been obtained in pure forms that crystallize in the same space group and differ only in the identity of one lattice solvent molecule; solvent loss causes isomerization from the faster- to the slower-relaxing form.
Monodispersed ZnO nanoparticles are easily prepared by the thermolysis of EtZnO(i)Pr as a single molecular precursor and TOPO without any extra solvent as well as any oxygen source.
A biodegradable scaffold for skin-tissue engineering was designed using collagen and chitosan, which are common materials for biomedical application. The scaffolds containing different amounts of chitosan were prepared by mixing the collagen and chitosan solutions followed by removal of the solvent using a freeze-dryi…
The evolution equations for grain growth and coarsening have been derived in the open literature mainly based on phenomenological considerations. Applying a thermodynamic extremal principle, the evolution equations are derived in a rigorous way. All kinetic parameters are provided directly. Existing relations are prov…
The adsorption of NO and NO2 and the reaction between NO and O2were investigated on a Na-Y,FAU zeolite. The interaction between NO and Na-Y is weak and no IR absorption feature is seen upon room temperature adsorption. On the other hand, several NOx species were identified in the adsorption of NO2 bonded to Lewis acid…
Robust, water-soluble gold clusters protected by monolayers of ligands containing a short alkyl chain (C7) close to the gold surface and a triethylene glycol monomethylether unit (TEG) to impart solubility in water and other polar solvents were prepared and characterized. Thiol 7 (N1-{2-[2-(2-methoxyethoxy)ethoxy]ethy…
Nanoparticles of the Fe/Co alloy have been prepared by sonolysis of a Fe(CO)5 and Co(NO)(CO)3 mixture in diphenylmethane solution under argon. The as-prepared product is an amorphous material having 10 nm diameter particles. Upon annealing in argon at 600 °C for 5 h, an air-stable Fe/Co alloy is formed with an increas…
Nitrate ions, which are known as efficient inhibitors for the corrosion of aluminum, have been shown to become very aggressive in pitting of 2024 aluminum alloy in specific conditions. Plotting potentiokinetic curves and immersion tests revealed strong dissolution of 2024 alloy in nitrate solutions with or without chl…
spc-Ni/MgAl (spc: solid phase crystallization method) catalysts have been prepared from Mg–Al hydrotalcite-like compounds as the precursors and tested for steam reforming of CH4 into synthesis gas. The precursors based on [Mg(II)1−xAl(III)x(OH)2]x+(CO3−)x·mH2O, in which a part of Mg(II) ions were replaced by Ni(II) io…
A new bis(5-pyridyl-2-methylthien-3-yl)cyclopentene, as a photochromic bridging ligand, has been synthesized and the photocyclization quantum yield was found to increase in the presence of a metal ion.