Materials Literature
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On-board diagnosis of the after-treatment system is forced by regulation; with diagnosis limits approaching certification values, a tight surveillance of the after-treatment performance is to be done. This paper presents a simple model for a diesel oxidation catalyst, representing both the thermal and chemical behavio…
The inhibitory effect of extract of Hibiscus Sabdariffa on corrosion of steel in aqueous 8 M H3PO4 was investigated by potentiodynamic polarization technique. The inhibition efficiency of Hibiscus extract on corrosion of steel in aqueous 8 M H3PO4 solution increases on increasing in concentration of the extract and de…
The main purpose of this research is to evaluate effects of the thermo-mechanical treatment of cold rolling followed by annealing on microstructure and shape recovery of the nanostructured shape memory Ti50Ni45Cu5 alloy. Several samples were produced by the copper-boat vacuum induction melting technique. The as-solidi…
In situ reduction of palladium( ii ) acetylacetonate during the synthesis of SBA-15 mesoporous silica affords material impregnated with palladium nanoparticles, with the material being effective for nitrate-nitrogen removal.
A theoretical model of the passive film formation mechanism on coarse-grained (a) and nanocrystalline (b) zinc coatings is proposed.
The extreme shape factors inherent in characterizing thin film electrolytes can present a challenge to quantitative interpretation of impedance spectra.Here, the impedance of a thin film ceramic electrolyte with surface microelectrodes is modeled via direct numerical solution of current conservation.Faradaic and non-f…
A rare family of six discrete binuclear [PdCl(PEt3)2] phenylene ethynylene rods with alkoxy side chains (methoxy, ethoxy and heptoxy) have been developed, and their solid-state photoluminescence results have been presented and discussed. The shorter bridging ligands are of the general formula H-C≡C-C6H2(R)2-C≡C-H, whe…
An electrochemical technique based on the slow-release of Cu2+ ion from electrochemical oxidation of a Cu anode in the presence of stearic acid (HSt) and an aqueous solution of ammonium acetate (CH3COONH4) (0.1 mol L-1) as supporting electrolyte has been used to synthesize Cu(II) stearate (Cu(II)St) complex. Different…
After half a century of studies on ferrocene and ammonia-borane, it is very exciting to observe that these materials still hide interesting properties not described before. Here we report dielectric transitions associated with the phase transition.
The adsorption energy of reactant molecules and reaction intermediates is one of the key descriptors of catalytic activity of surfaces and is commonly used as a metric in screening materials for design of heterogeneous catalysts. The efficacy of such screening schemes depends on the accuracy of calculated adsorption e…
Three meso -substituted free-base tripyrrins were successfully isolated as side-products from the synthesis of triarylcorroles and characterized as to their electrochemical properties in nonaqueous media.
It has been found that in hydrocarbonate-chloride solutions (pH = 8.4) benzotriazole inhibits copper pitting corrosion.Comparative results obtained on stationary and rotating disc electrode have shown that rotation stabilizes the metal/electrolyte systems.Under drastic hydrodynamic conditions, the benzotriazole concen…
In this work, the systems are constructed with the defect lines of B-B or N-N dimers embedded in a graphene matrix using density functional theory. It is found that the Dirac-cone dispersions appear at the Fermi level in the bands introduced by the B or N heteroatom, linear B-B or N-N dimers, demonstrating that the ca…
In this research, the amorphous-type cordierite (2Mg.2Al2O3.5SiO2) was synthesized by the Pechini method. After calcination at 800°C, the powder was pressed to form disk pellets which were sintered at 1200, 1250 and 1300°C. The structural information of the synthesized glass ceramic cordierite phases have been obtaine…
This study presented a technique to deposit high strength and highly conductive copper thin films on glass substrates at room temperature. In this work, Cu thin films with thicknesses ~500 nm have been deposited on glass substrate by thermal evaporation technique at room temperature. After deposition, these films have…
Oxidation-ultrasound process is effective to deeply remove K + and make ACs with high performance for supercapacitor applications.
The anticancer drug paclitaxel was encapsulated into a bio-nanocomposite formed by magnetic nanoparticles, chitosan and apatite. The aim of this drug carrier is to provide a new perspective against breast cancer. The dynamics of the pure and encapsulated drug were investigated in order to verify possible molecular cha…
The results of a laboratory investigation (chemical composition, microstructure, hardness, wear rate), field testing of the welded overlays of the manual arc, and an assessment of the feasibility of coated soil rippers have been presented in the current work. Hadfield manganese steel (plain or alloyed by Cr, Ni, Mo, S…
Hyperbranched poly(acrylic acid-co-3-hydroxypropionate) (PAcHP) was synthesized by base-catalyzed hydrogen transfer polymerization of acrylic acid through one step. The copolymers obtained through solution and bulk polymerization were insoluble in water and all organic solvents tried. Structural and compositional char…
The growth of gold thiolate nanoparticles can be affected by the solvent and the R group on the ligand. In this work, the difference between methanol and benzene solvents as well as the effect of alkyl (methyl) and aromatic (phenyl) thiols on the reaction energies and barrier heights is investigated theoretically. Den…