Preparation of alkaline-earth titanates by accelerated solid-state reaction in water vapor atmosphere

NaCl–H2O-assisted preparation of SrTiO3 nanoparticles by solid state reaction at low temperature

“…9 In water vapour, the decomposition of SrCO 3 was accelerated. 21 Additionally, absorbed water on the surface of solid materials could dissolve NaCl, and further increase the diffusivity of components, which accelerated the solid state reaction of SrCO 3 and TiO 2 . The dispersion of SrTiO 3 was also greatly improved.…”

“…Generally, SrTiO 3 powders for the industrial applications are prepared by solid-state reaction of strontium carbonate and titanium dioxide due to the simplicity of the process and low cost of the starting materials. [20,21] The higher than 900 °C calcination temperature required in this process leads to many disadvantages of the produced powders, such as large particle size with a wide size distribution and high degree of particle agglomeration. Therefore, it is important to develop a practical and environment-friendly route for scale-up preparation of monodisperse SrTiO 3 nanoparticles at low temperature and low cost.…”

An Understanding of the Photocatalytic Properties and Pollutant Degradation Mechanism of SrTiO3 Nanoparticles

“…The conventional method for preparing SrTiO 3 compounds is based on the solid-state reaction of SrCO 3 and TiO 2 precursors, which requires high sintering temperatures producing micrometric ceramic particles with chemical inhomogeneity (24)(25)(26)(27). It is well known that the reduction of particles from micro-to nanometric sizes increases the specific surface area, and thus improves the photocatalysis activity (28,29).…”