The influence of thermal annealing on the surface morphologies and structural characteristics zinc oxide (ZnO) nanopowders synthesized via solution immersion method for triboelectric nanogenerator applications is reported in this paper. ZnO were thermally treated at different temperatures ranges between 300°C to 700°C 1 hour, their properties studied using field emission scanning electron micro...

Using a pulsed electron beam evaporation in vacuum mesoporous nanopowder CaF 2 with specific surface area up to 60.5 m /g were produced. The effect of annealing different media on the evolution magnetic and texture properties nanoparticles has been studied. For first time, medium magnetization nanopowders was discovered. Keywords: nanopowders, calcium fluoride, ferromagnetism, evaporation.

The paper describes the properties of some nanopowders obtained by coprecipitation and used as adsorbent for wastewater treatment. The Fe3O4 and γ-Fe2O3 nanopowders were obtained using iron salts and NaOH as precipitation agents. D-sorbitol was used to prevent the agglomeration between the nanoparticles. The particle size and distribution were detected using a transmission electron microscopy (...

: This work presents results of measurements of viscosity of suspensions including yttrium oxide (Y2O3), yttrium aluminum garnet (Y3Al5O12) and magnesium aluminum spinel (MgAl2O4) nanopowders in ethanol. Nanoparticles used in our research were either commercially available (Baikowski) or nanopowders newly developed in the Institute of Ceramics and Building Materials in Warsaw, Poland. The study...

We report electrically pumped, cw laser action near 405 nm from Nd(3+) -doped delta -alumina nanopowders. To our knowledge, this is the first report of stimulated emission from the high-lying F(2) -excited states, achieved through feedback from strong elastic scattering of light over transport path lengths shorter than half a wavelength.

Co and Ni-nanoclusters are attractive alternatives to Pt catalysts for hydrogen generation. These earth abundant elements when loaded onto the TiO(2) nanopowders surface act as efficient co-catalysts. Co, Ni-decorated TiO(2) photocatalysts display only three (3) times lower catalytic activities for H(2) evolution under UV illumination compared with Pt-decorated TiO(2) photocatalysts.

in this study, a series of laboratory tests were conducted to investigate the efficiency of hydroxyapatite (1-iap)nanopowders towards adsorption of lysozyme from aqueous solution. in the present research. i rp nanopowderssynthesized from egg-shell characterized using sem and ft-ht. the adsorption of lysozyme was i mg/ml using0.1 g adsorbent in 100 ml of lysozyme solution. adsorption data were f...

stoichiometric tetragonal bal-xsrxtio3 (x = 0.23) nanopowders were prepared by stearic acid gel(sag) method using barium stearate, strontium stearate, tetrabutyl titanate as ba, sr, ti sourcesand stearic acid as complexing reagent. thermal analysis including differential thermogravimetric(dtg) and tg, fourier transform infrared spectrometry (ftir), x-ray diffraction (xrd) andtransmission electr...

The research methods and the first results obtained in study of roughness single-crystal silicon (111) substrates processed at final stage by various are described: traditional polishing without use chemical-mechanical (CMP), with CMP CMP, but oxide cerium nanopowders. efficiency using CeO 2 nanopowders has been demonstrated. following effective values were obtained: - 3.56 nm, 0.54 0.93 nm. Ke...

To investigate the effect of surface coating materials on humidity stability aluminum (Al) nanopowders, three kinds core–shell structure Al nanopowders with an Al2O3 passivation coating, carbon and plasticizer dioctyl sebacate (DOS) were prepared through laser-induction complex heating method. After one year’s storage at 95% relative humidity, their thermal properties tested differential scanni...