Results 241 to 250 of about 69,846 (270)
Some of the next articles are maybe not open access.
Characterization of silicated anatase powders
Journal of Materials Chemistry, 1994Silicated titanias have been prepared by reaction of commercial anatase-based TiO2 powders with tetraethylorthosilicate, followed by calcination. At low loadings orthosilicate species are found, that interact mainly with surface defects of anatase where surface hydroxy groups are located.
LI YI +3 more
openaire +2 more sources
Photoluminescence of nitrogen-doped anatase
Materials Chemistry and Physics, 2008Abstract Photoluminescence depending on nitrogen concentration was investigated using anatase-type TiO2 prepared by the calcination of a mixture of titanyl sulfate hydrate and urea. The substitutional ratio (x) of nitrogen in TiO2 was successfully varied from 0.004 to 0.022 by changing the molar ratio of the mixture.
Terufumi Okumura +3 more
openaire +1 more source
La transformation TiO2(B) → anatase
Materials Research Bulletin, 1982Abstract The transformation from BTiO 2 to anatase either above 550°C under normal pressure or at room temperature under 60 kb is explained by a process of crystallographic shear with elimination of an equal number of anionic and cationic vacancies.
L. Brohan +3 more
openaire +1 more source
Optical properties of anatase (TiO2)
Solid State Communications, 1994Abstract We present a study of optical properties of anatase (TiO 2 ) using temperature and polarization dependent photoluminescence, optical absorption, and reflectance measurements. Anatase crystals, rutile crystals and thin TiO 2 films have been studied in parallel for comparison purposes. Visible luminescence, due to the emission of self-trapped
H. Tang +3 more
openaire +1 more source
Paramagnetic anatase titania/carbon nanocomposites
Journal of Nanophotonics, 2017The nanocomposites comprising of anatase titania nanoparticles uniformly distributed inside the porous carbon matrix were synthesized using furfuryl alcohol, tetrabutyltitanate, and nonionic surfactant. The characterization of the nanocomposite by scanning electron microscopy, transmission electron microscopy, energy dispersive x-ray analysis, x-ray ...
Ivan Zakharchuk +6 more
openaire +1 more source
Chemisorption capabilities of anatase surface
Journal of Thermal Analysis, 1990With methods of computer techniques and on basis of crystallographic and XRS data the surface concentration of the active centres in water chemisorption were calculated for the characteristic planes of the anatese. Calculated was also the size of graines whose stage of hydration is equal to the experimentally determined quantity of chemisorbed water.
B. Andruszkiewicz, J. Pysiak
openaire +1 more source