Synthesis and stabilization of nano-sized titanium dioxide

Abstract

The published data on the preparation and the The published data on the preparation and the dispersion-structural properties of nano-sized TiO dispersion-structural properties of nano-sized TiO 2 2 are are considered. Attention is focused on its sol ± gel synthesis considered. Attention is focused on its sol ± gel synthesis from different precursors. The possibilities for the purpose-from different precursors. The possibilities for the purposeful control and stabilization of properties of TiO ful control and stabilization of properties of TiO 2 2 nano-nanopowders and sols are analyzed. Information on powders and sols are analyzed. Information on physicochemical methods used in studies of the particle physicochemical methods used in studies of the particle size and the phase composition of nanodisperse TiO size and the phase composition of nanodisperse TiO 2 2 is is presented. The prospects of using nano-sized TiO presented. The prospects of using nano-sized TiO 2 2 in in medicine and nanobiotechnology are considered. The bib-medicine and nanobiotechnology are considered. The bibliography includes 95 references liography includes 95 references. . Synthesis and stabilization of nano-sized titanium dioxideZ R Ismagilov, L T Tsykoza, N V Shikina, V F Zarytova, V V Zinoviev (deceased), S N Zagrebelnyi

Introduction of peroxo groups into titania: preparation, characterization and properties of the new peroxo-containing phase

“…[2][3][4][5] The most well-known TiO 2 crystal structures, rutile, brookite and anatase, are commonly used as photocatalysts, with anatase showing greater photocatalytic activity for most reactions. [6][7][8] The differences in lattice structures of anatase and rutile cause different densities and electronic band structures, leading to different band gaps (3.20 and 3.02 eV for bulk anatase and rutile, respectively). 9 Recently obtained nanosize "η-TiO 2 ", which small crystals when contacted with electrolyte solutions and vapors, water for example, generate plethora of surface hydroxyl groups, highly reactive towards adsorption reactions with contaminant molecules and ions, is a promising material for sorption and (photo)catalysis.…”

Comparison of antiwear properties of titanium-containing compounds

“…According to elemental analysis data, the concentrations of elements in the Ti carbox ylates titanium 2 ethylhexanoate (EH Ti) and tita nium oleate (OL Ti) were respectively as follows (wt %): C 59.39 and 72.08, H 9.27 and 11.01, and Ti 9.90 and 5.34. To calculate the theoretical amounts of the elements in the Ti carboxylates, we assumed that the synthesized compounds are represented by the dimers (RCO 2 ) 3 -Ti⎯O⎯Ti⎯(O 2 CR) 3 . The calculated and experimental data on the composition of titanium 2 ethylhexanoate and titanium oleate are practically identical.…”

“…For example, titanium alkoxides and halides are used for preparing catalysts and film coat ings and TiO 2 is used in the manufacture of paint materials, pharmaceuticals, and cosmetics [1][2][3]. There are data on the use of titanium compounds as lubricant additives in lubricating compositions [4][5][6][7][8].…”

Development of new methods in modern selective organic synthesis: preparation of functionalized molecules with atomic precision

“…hydrolysis and condensation of titanium alkoxide459,460 were conducted in the presence of the prepared colloidal solution of CdS. Titanium tetrabutoxide Ti(OBu n )4 and a stable colloidal solution of CdS served as the initial reactants.…”