Nitriding of nanocrystalline iron and reduction nitride with gaseous mixtures hydrogen ammonia were studied at 375 °C atmospheric pressure using the chemical potential programmed reaction (CPPR) method coupled in situ XRD. In this paper, a series phase transitions occurring during processes is shown, detailed analysis composition structure material given. The influence variable nitriding on lat...

We report a new production pathway for a variety of metal oxide nanocrystallites via submerged illumination in water: submerged photosynthesis of crystallites (SPSC). Similar to the growth of green plants by photosynthesis, nanocrystallites shaped as nanoflowers and nanorods are hereby shown to grow at the protruded surfaces via illumination in pure, neutral water. The process is photocatalytic...

The premier observation on the enhanced light emission from such a metal-SiO(x)-Si light emitting diode (MOSLED) with Si nano-pyramids at SiO(x)/Si interface is demonstrated at low biases. The Si nano-pyramids exhibits capability in providing the roughness of the SiO(x)/Si interface, and improving the Fowler-Nordheim (F-N) tunneling mechanism based carrier injection through the novel SiO(x)/nan...

Microcrystalline silicon thin films have attracted much attention in recent years in active matrix-liquid-crystal displays and photo-voltaic solar cells. This is due primarily to their superior transport over amorphous alternatives while maintaining a significantly lower manufacturing cost over conventional wafer-grown silicon. The general goal of current microcrystalline development efforts is...

Nanosheets composed of stacked atomic layers exhibit unique magnetic, electrical, and electrochemical properties. Here, we report the effect iron substitution on structure magnetism nickel hydroxide, Ni(OH)2, nanosheets. Ni(OH)2 iron-substituted (5, 10, 20, 50 % Fe substitution) were synthesized using a rapid microwave-assisted hydrothermal process. Scanning transmission electron microscopy sho...

we report on the synthesis, morphology, chemically and structurally of la2o3-co3o4-zro2 nanostructure. the la2o3-co3o4-zro2 nanostructure was synthesized by a method based on the co-precipitation. composite powders have been characterized by xrd (x-ray diffraction), sem (scanning electron microscopy) and bet (brunauer-emmett-teller). x-ray diffraction showed the formation of nano crystalline, l...

Abstract Nanocrystalline calcium silicate powder was synthesized by adding different ratios of MnO 2 ranging from 0.00 to 2.00 wt% detect its effect on the structure and physical properties. The pseudowollastonite triclinic low combeite hexagonal phase with nanocrystallite size less than 85.0 nm were confirmed XRD technique average particle 7.8 27.9 as detected HR-TEM micrograph images. Stretch...

Hollow hemispherical titanium dioxide (TiO2) aggregates (HHTAs) consisting of P25 TiO2 nanocrystallites were prepared by a coaxial electrospray method and applied to dyesensitized solar cells (DSCs). Although the photoelectrode film constructed with HHTAs possesses an internal surface area lower than that of one with dispersed P25 TiO2 nanocrystallites and thus achieves less dye adsorption, it ...

In this work, the strontium-doped lanthanum manganite- a ceramic material- used as cathode in solid oxide fuel cells. An impression of grinding time on the structural and thermal properties of Sr-doped LaMnO3 system with La1-xSrxMnO3 (x=0.2) stoichiometric ratio was investigated. The nano crystallite LSM powder with cubic structure was prepared by varying the milling time of planetary monomill ...