Formation and structural transformations of nanoparticles in the TiO2–H2O system

Abstract

Results thermodynamic analysis of processes in the TiO 2 -H 2 O system in a wide range of variation of parameters determine the regions of sustainable existence of titanium dioxide in the form of rutile and anatase modification. The results of thermodynamic prediction on the possibility and conditions of sustainable existence of TiO 2 with the rutile structure have been confirmed in experiments.

Optical properties and photocatalytic activity of nanocrystalline TiO2 doped by 3d-metal ions

“…All samples have high specific surface area (230 -290 m 2 /g) and consist of the mixture of anatase (80 -90 %) and brookite (10 -20 %) with the sizes of coherent scattering regions ranging from 4 -6 nm. The formation of anatase phase during hydrolysis and relatively low temperature treatment is in good agreement with literature data [25]. Any other phases containing iron, chromium, vanadium and manganese have not been detected by X-Ray diffraction.…”

Biological effect of zirconium dioxide-based nanoparticles

“…A significant advantage of hydrothermal synthesis, as compared to other methods, is that it makes it possible to obtain in some cases, as was shown in [23][24][25][26][27], almost completely non-agglomerated nanoparticles, which have a narrow size distribution range. Such properties of the nanopowders, which are formed under hydrothermal conditions, are the result of a fast nucleation process, as was shown in [28,29].…”

Mathematical modeling of sedimentation of nanoparticles in the vessel of finite depth

“…Since the experiment of Robert Brown (the movement of pollen particles in a liquid drop), many scientists have studied the behavior of particles in different types of environments. The method of nanoparticle synthesis plays an important role in the distribution of nanoparticles' sizes [2]. Theoretical investigation of the sedimentation of nanoparticles is described in [3,4], Brownian motion of nanoparticles is described in [5][6][7].…”