Photocatalytic conversion of aromatic alcohols in acetonitrile (CH3CN) suspensions of metal-loaded titanium(IV) oxide under various conditions was examined. Benzaldehyde (PhCHO) and hydrogen (H2) were simultaneously produced with a molar ratio of 1:1 from benzyl alcohol (BnOH) in CH3CN suspensio...

In this work, graphene oxide (GO) reinforcement was used to improve the strength and fracture toughness of the calcium phosphate (CaP) coating applied on the anodized titanium using pulse electrodeposition. Based on the results, the CaP coating consisted of mixed phases of octa-calcium phosphat...

The extension of photocatalytic nitrate reduction in water by a 1%Pd–1%Cu (%wt) catalyst supported on TiO2 was evaluated under different reaction conditions. A series of electron sacrificial donors such as formic acid, oxalic acid, ethanol, methanol, and humic acid were used for inhibiting the ...

In this study, the green treated aluminium oxide nanoparticles (Al2O3 NPs) were synthesized through simple biological reduction method and studied the effect of pH disparity on particle size variation. Green synthesis of Al2O3 NPs from Prunus × yedoensis leaf extract (PYLE) used for removal of ...

The photochemical reactions in the systems O2-F2-AsF5, OF2-AsF5 and O2-OF2-AsF5, yielding O2AsF6 as the reaction product were investigated. The influence of the mole ratio of the reactants upon the rate of formation of O2AsF6 was studied and a reaction mechanism is suggested which is based on th...

The diethyldithiocarbamate complex of titanium has not been previously reported, in the literature. Conditions for its formation and extraction have been examined, together with some interferences. An absorption spectrum has been plotted, and the possibility of determining titanium by means of t...

The present work elucidated the precipitants effect of pure CeO2 on the activity of silicotungstic acid supported on CeO2 catalysts toward NOx reduction. The results implied that the silicotungstic acid doped CeO2 prepared by the NH3·H2O precipitant showed the best SCR performance and nearly 10...

Condensation of various isatins with heteroaromatics (indoles and pyrrole) has been carried out in the presence of catalytic amount of silicotungstic acid (STA) at room temperature to form their corresponding 3,3-bis(indolyl)- and 3,3-bis(2-pyrrolyl)oxindoles. The mechanistic aspects of the reac...

A series of silicotungstic acid modified CeO2 (SC-x, x represents the pH value of solution that is used for the preparation of catalysts) were prepared for the selective catalytic reduction (SCR) of NOx with NH3. SC-9 showed the best catalytic activity among the samples. The monodentate nitrate,...

The lead element or its salts are good radiation shielding materials. However, their toxic effects are high. Due to less toxicity of bismuth salts, the radiation shielding properties of the bismuth salts have been investigated and compared to that of lead salts to establish them as a better alte...

BiVO4 is a well-known photocatalyst for water oxidation due to small band gap and suitable band positions, but short diffusion length is necessary to solve for practical applications. This study adopts common alkaline etching process for fabricating BiVO4 and BiOx composite as photocatalyst for ...

AbstarctA new type of bismuth electrode (BiImE) for anodic stripping voltammetric detection of trace Pb(II), which is based on a bismuth imidazolate (BiIm) sensing coating, is presented. A simple preparation protocol was adopted via drop-casting a rapidly drying methanol suspension of amorphous ...

We report an experimental demonstration of the chemical reactions for the chemical looping gasification process using molten bismuth oxide as the oxygen carrier. Cycling of the material without noticeable degradation was shown using a thermo-gravimetric analyser (TGA) furnace through both the re...

Lead-bismuth eutectic liquid metal (LBE) is the primary coolant for the advanced liquid-metal nuclear reactor, and clarification of its lubrication behavior and mechanism at elevated temperature is of importance. In this paper, a self-mated high-temperature steel sliding-pair and a pin-on-disc c...

Lead oxide (PbO) formation can occur in Lead-Bismuth Eutectic (LBE)-cooled nuclear systems in case of oxygen ingress or temperature decrease of the coolant beyond the normal operation ranges. In the present work the formation of lead oxide in an actively cooled LBE flow is studied. Computational...

Barium titanate/hydroxyapatite (BaTiO3/HA) rod-like nanocomposites were fabricated by hydrothermal process at 140–180 °C for 12 h using the rod-like HA as a growth template, and BT precursor solution as a liquid phase. The structure was BaTiO3 nanoparticles (average diameter of 6 nm) grown on ...

Barium titanate/hydroxyapatite (BT/HA) spherical nanocomposites were fabricated by hydrothermal process using HA nanopowders dispersed in BT precursor solution. The samples were characterized by XRD, SEM and TEM to obtain sizes and crystal structure. The results showed that the BT/HA spherical n...

Co–Re–Cr-based alloys with additions of 200 ppm or 1000 ppm boron were investigated by high-resolution methods such as scanning electron microscopy, transmission electron microscopy and three-dimensional atom probe. The chemical composition of borides with a lamellar structure resembling a eut...

Thermal stress cracks of the rhenium coating on C/C composites have severely limited its applications. In the present work, rhenium coatings were prepared on C/C composites by chemical vapor deposition (CVD) and modified by alloying with cobalt. The results showed that the as-prepared rhenium co...

Laser surface alloying (LSA) with rhenium was applied to produce wear and corrosion resistant layers on Inconel 718 alloy. Using a high-power diode laser and 50% overlapping ratio of laser tracks, two kinds of alloyed layers were produced: IN718–14 wt% Re layer with completely dissolved Re powd...