CoFeCu nanowires were deposited by pulsed electrodeposition technique into the porous alumina templates by a two-step mild anodization technique, using the single-bath method. The electrodeposition was performed in a constant electrolyte while Cu constant was controlled by electrodeposition current. The electrodeposition current was 3.5, 4.25, 5 and 6 mA. The effect of electrodeposition current...

Porous alumina films had been fabricated by anodizing from aluminum films after an electropolishing procedure. Alumina stripes without pores can be distinguished on the surface of the porous alumina films. The width of the alumina stripes increases proportionally with the anodizing voltage. And the pores tend to be initiated close to the alumina stripes. These phenomena can be ascribed to the e...

The bifunctional nature of Cu-ALOx-on-carbon catalysts, used in the direct catalytic conversion of ethanol to ethyl acetate, prompted an examination of the dispersion of Cu on the composite catalyst. For this, the NzO-method of Osinga et al. for estimation of bare metallic copper surface on composite copper catalysts has been adapted for use on a gravimetric adsorption unit and Ohen applied to ...

The synthesis and analysis of inorganic material combinatorial libraries by a directed-sorting, split-pool bead method was demonstrated. Directed-sorting, split-pool, metal-loaded libraries were synthesized by adsorbing metal salts (H2PtCl6, SnCl2, CuCl2, and NiCl2) and metal standards (Pt, Cu, Ni in HCl) onto 2-mg porous gamma-alumina beads in 96- or 384-well plates. A matrix algorithm for the...

c-Alumina-based materials with high porous volume, tunable pore size, were synthesized by the addition of both PEO/PPO/PEO triblock copolymers (Pluronics F127 and P123) and metal nitrates (Al, Mn, Cu) in a boehmite (AlOOH) nanoparticle hydrosol. During the subsequent thermal treatment, the surfactant was removed leaving a highly porous framework. The pore size distribution was strongly dependen...

The structure–property relationship of catalytic supports for the deposition redox-active transition metals is great importance improving efficiency and reusability catalysts. In this work, role alumina support precursors Cu-Fe/Al2O3 catalysts used total oxidation toluene as a model volatile organic air pollutant elucidated. Surface characterization revealed that surface area, pore volume acid ...

Poor wettability and weak interfacial bonding between Cu Al 2 O 3 have been critical issues for sintering of high-quality Ni@Al /Cu composites. In this paper, we explore an engineering design methodology to achieve good mechanical properties composites using spark plasma method. The Ni coated powders were prepared a heterogeneous precipitation method, which can significantly improve enhance the...

Ultrahigh performance cooling is one of the important needs of many industries. However, low thermal conductivity is a primary limitation in developing energy-efficient heat transfer fluids that are required for cooling purposes. Nanofluids are engineered by suspending nanoparticles with average sizes below 100 nm in heat transfer fluids such as water, oil, diesel, ethylene glycol, etc. Innovat...

The aim of our research was to indicate the suitability metallurgical slags (two blast furnace and one steel slag) as components Cu-free friction materials. base mixture consisted nine including phenolic resin, graphite, tin sulphide, aramid fibers, iron powder, a barite with calcite, vermiculite. To this mixture, particle size below 0.1 mm were added individually in amount 20 wt.%. A alumina w...

Alumina nanofibers were prepared by a technique that combined the sol-gel and electrospinning methods. The solution to be electrospun was prepared by mixing aluminum isopropoxide (AIP) in ethanol, which was then refluxed in the presence of an acid catalyst and polyvinylpyrolidone (PVP) in ethanol. The characterization results showed that alumina nanofibers with diameters in the range of 102 to ...