Dual phase (a þ b) copper–tin alloys were synthesized from elemental nanoparticle precursors following consolidation, annealing and quenching steps. The precursors were derived from the sequential reduction of tin and copper salts in ethanolic solution. The dual phase microstructure exhibits a duplex character with a mixture of Cu-rich and Sn-rich (a þ b) regions. 2004 Published by Elsevier Ltd...

This manuscript reports the use of nanoparticle-modified voltammetric sensors for rapid and green determination chemical oxygen demand in river waters from agricultural waste. Four different variants modified electrodes have been prepared: CuO nanoparticles electrogenerated over Cu covered with Nafion film (CuO/Cu-Nf), graphite–epoxy composites Cu, CuO, Cu–Ni alloy nanoparticles. The response f...

A single-use electrochemical sensor using ionic liquid mediated hollow fiber-graphite working electrode was fabricated for the first time. The screening tool was developed by coupling this electrode with differential pulse voltammetry (DPV) for in-situ pre-concentration and determination of Zn(II) and Cu(II). In our plot, porous polypropylene hollow fiber membrane was divided into pieces of 2 c...

Abstract Upscaling of nanoparticle fabrication by sputtering into an ionic liquid is shown for the example Cu. Long-time (24 h) a large amount (50 mL) 1-butyl-3-methylimidazolium bis-(trifluoromethylsulfonyl)imide [Bmim][(Tf) 2 N] yields approximately 1 g Cu nanoparticles (mean spherical diameter (2.6 ± 1.1) nm), stabilized in without agglomerations. Extraction from stabilizing was performed wi...

in this paper, a novel method of producing bi-metallic alloy nanoparticles at low temperatures using hydrogen bombardment of thin films, deposited on glass substrates, is introduced. optical and morphological characteristics of the nanoparticles were extensively studied for various conditions of plasma treatment, such as plasma power density, temperature, duration of hydrogen bombardment, thick...

A single-use electrochemical sensor using ionic liquid mediated hollow fiber-graphite working electrode was fabricated for the first time. The screening tool was developed by coupling this electrode with differential pulse voltammetry (DPV) for in-situ pre-concentration and determination of Zn(II) and Cu(II). In our plot, porous polypropylene hollow fiber membrane divided into pieces of 2 cm, t...

We describe an all-electrical plasmon detection based on the near field coupling between plasmons and percolating electrons. It is the technique to electrically detect the local field enhancement from randomly distributed Cu nanoparticles coupled to a plasmon resonance. In addition, we revealed that plasmon-sensitivity is maximized at the percolation threshold, the minimum Cu particle surface c...

A photocatalytic effect arises from the electron relaxation of semiconductors. Directing toward reactions is focus studies. Co-catalyst decoration a main way to modulate relaxation, and Cu(II) nanoparticles have been widely studied as an important co-catalyst. However, detailed mechanism still not well known. The current study devoted investigating nanoparticle on relaxations for TiO2 through i...

We examined the capacity of SiO2@Cu core-shell nanoparticles to inhibit Escherichia coli and Streptococcus mutaus. Before after addition silicate, copper showed a surface plasmon resonance (SPR) with peak in 620–630 nanometers' region. SiO2@cu nanoparticle manufacturing was further demonstrated have spherical shape, as TEM. The crystal structure SO2 @cu we found matches X-ray diffraction patter...

2-Nitroimidazole is radiosensitizer and serves as imaging contrast agent by 19Fand 31P MR methods. Despite the success of mesonidazole and SR-4554 compounds, very little is known of its hepato-cytotoxicity if it can be potential hypoxia imaging marker and non-toxic drug. Authors established the low oxygen, low energy metabolic ratio and gluconeogenesis in nitroimidazole induced hepatocytes and ...