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We present small indium (In) nanoparticles with an average diameter of 4.5 nm synthesized by pulsed plasma in water. Slightly increased lattice constants and thermal stability of the tetragonal In are revealed by X‐ray diffraction analysis, Rietveld refinement, and thermogravimetric analysis. The highly crystalline body‐centered cubic indium oxide (In2O3) nanoparticles with an average diameter of 12 nm and various shapes (semispherical, semihexagonal, and semicubic) are obtained by annealing the as‐synthesized In nanoparticles at 450 °C. The bandgap energy of the In2O3 nanoparticles is 3.63 eV ...Более
Pulsed plasma in liquid is a simple, ecologically friendly, cost-efficient method based on electrical discharge between two metal electrodes submerged into a dielectric liquid. We synthesized carbon-encapsulated Fe (Fe@C) magnetic nanoparticles with low cytotoxicity using pulsed plasma in a liquid. Body-centered cubic Fe core nanoparticles showed good crystalline structures with an average size between 20 and 30 nm were encapsulated in onion-like carbon coatings with a thickness of 2–10 nm. Thermal gravimetric analysis showed a high stability of the as-synthesized samples under thermal treatme ...Более
Emil ÖMÜRZAK | Tinatin DOOLOTKELDİEVA | Saykal BOBUŞOVA
By means of XRD and FESEM analysis, it is established that copper nanoparticles with sizes less than 10 nm are formed during the chemical reduction, which form aggregates mainly with spherical shape. Presence of gelatin during the chemical reduction of copper induced formation of smaller size distribution nanoparticles than that of nanoparticles synthesized without gelatin and it can be related to formation of protective layer. Synthesized Cu nano-powders have sufficiently high activity against the Erwinia amylovora bacterium, and the bacterial growth inhibition depends on the Cu nanoparticles ...Более
Pulsed plasma between two Zn rods submerged into aqueous solution of cetyl trimethylammonium bromide (CTAB) and sodium dodecyl sulphate (SDS) surfactants resulted in formation of pure ZnO nanorods, while the pulsed plasma between two Zn rods in water without surfactant yielded a mixture of ZnO and Zn nanoparticles. Carbon coated ZnO nanorods with about 20 nm thickness and 150 nm length were synthesized by this method using different surfactant materials such as CTAB and SDS. Cu nanoparticles of about 10 nm in size were also synthesized by the pulsed plasma in aqueous solution of 0.2 % gelatine ...Более
In the joint chemical reduction of silver and copper ions in the presence of gelatin, regardless of the composition of the reaction medium, a nanocomposite was formed consisting of nanodispersed silver and copper particles. In this research, the dependence of phase composition and dispersity on the synthesis conditions, as well as antibacterial activity of synthesized silver and copper nanocomposites were studied. It has been established that the most highly dispersed silver and copper nanocomposites were formed in an alkaline medium. We have revealed that nanocomposites of Ag-Cu system which ...Более