Now showing items 31-40 of 62
The preparation of Al2O3/M (Fe, Co, Ni) nanocomposites by mechanical alloying and the catalytic growth of carbon nanotubes
Mechanical alloying was employed to produce Al2O3/M (M=Fe, Co, Ni) nanocomposites. It was found that high-energy mechanical milling could realize not only drastic refinement but also the well dispersion of catalyst precursors ...
Phase transformation of a rare-earth Anderson polyoxometalate at low temperature
The rare-earth Anderson-type polyoxometalate [Tm2(H2O)14CrMo6O24H6][CrMo6O24H6]·16H2O undergoes a temperature-dependent single-crystal-to-single-crystal (SCSC) phase transformation.
Solid-state photopolymerization of a photochromic hybrid based on Keggin tungstophosphates
Reversible photochromism occurring with reversible photopolymerization between 0-D and 1-D under irradiation with sunlight was clarified by X-ray analyses.
Model apatite systems for the stabilization of toxic metals : II, cation and metalloid substitutions in chlorapatites
Environmental chlorapatites, of the form A10(BxC1−xO4)6Cl2, where A=Ca, Cd, or Pb; B/C=P, V, or Cr and 0≤x≤1, were synthesized by solid-state reactions. Crystal structure variations, primarily lattice parameters, were ...
Mechanistic and thermodynamic studies of oxyanion sorption by various synthetic Mg/Al layered double hydroxides
In this study, Mg/Al layered double hydroxides (LDHs) were investigated for their potential in scavenging several harmful oxyanions from aqueous solution. LDHs could effectively remove oxyanions and the selectivity of LDHs ...
Exchange bias and magnetization process of Co/CoO nanocomposite thin films
Co/CoO nanocomposite thin films have been deposited by RF sputtering with different oxygen partial pressures in the working atmosphere. It has been found that the magnetic properties (exchange bias (EB), coercivity and ...
TEM and STEM analysis on heat-treated and in vitro plasma-sprayed hydroxyapatite/Ti-6Al-4V composite coatings
A cogent understanding of the microstructure, and indeed nano-structure, of hydroxyapatite (HA) and the interface between Ti-6Al-4V and HA is crucial to its appropriateness as a biomaterials. This paper reports the analysis ...
On the fabrication of resistor-shaped ZnO nanowires
A novel morphology of zinc oxide (ZnO) consisting of resistor-shaped nanowires connected “in-series” has been synthesized by a vapor phase transport method in the presence of water and copper. Scanning electron microscopy ...
Zinc oxide quantum dots embedded films by metal organic chemical vapor deposition
Zinc oxide (ZnO) quantum dots (QDs) were fabricated on silicon substrates by metal organic chemical vapor deposition. Formation of QDs is due to the vigorous reaction of the precursors when a large amount of precursors was ...
Growth mechanism of tubular ZnO formed in aqueous solution
Tubular ZnO microstructural arrays were fabricated by a hydrothermal decomposition method. The dependence of the morphologies on the growth time and temperature was investigated in detail. An experiment was carried out to ...