Hydrothermal synthesis can be defined as a method of synthesis of single crystals, depending on the solubility of minerals in hot water under high pressure. The crystal growth is proceeded in an apparatus consisting of a steel pressure vessel called autoclave while the hot water plays a role in supercritical water at critical point.
The advantages of the hydrothermal method over other types of crystal growth include the ability to create crystalline phases which are not stable at the melting point. Also, materials which have a high vapor pressure near their melting points can also be grown by the hydrothermal method. Higher diffusion ability of solute enables higher speed of growth which is a driving force that the particle is minimized.
YAG doped Ce and Eu:in
SEM Photographs of YAG phosphor doped Ce and Eu at different Ce, Eu concentration;
(A)Ce 10 at.% Eu 10 at.%, (b) &(c) TEM imager of (a), at 400°C and 250 atm.
The YAG(Yttrium aluminium gamet) powders in Ce 10 at.%, Eu 10 at % had narrow distribution of particle size. The morphology became nearly spherical The particles size was about 60-150 nm
Lithium Cobalt Oxide (LiCoO2)
Lithium Manganese Oxide (LiMn2O4)
Cerium Oxide (CeO2)
Copper Oxide (CuO)
Zinc Oxide (ZnO)
Titanium Oxide (TiO2)
Barium Hexaferrite (BaFe12O19)
Nickel Zinc Ferrite (NixZn1-xFe2O4)
Features
Dissolved well in Solvent. Increase diffusion ability. Suitable to use for all solid types. Does not create hydroxyl group.
Application
Production of ceramic nano sized particle Extraction Chemical reaction
