Synthesis and applications of metal oxide and metal oxide/clay nanocatalysts by using hydrothermal synthesis method: A review

摘要: Hydrothermal synthesis method refers to the heterogeneous reaction medium that occurs in the presence of aqueous solvents or the mineralizers under high pressure and temperature to ensure in the dissolution and recrystallization of the materials that cannot to be dissolved under optimum conditions. Hydrothermal synthesis can to be defined as a heterogeneous chemical reaction that takes place in the presence of an aqueous or nonaqueous solvent in a closed system at the temperatures above room temperature and pressure values greater than 1 atm. This method has been widely accepted since 1960 and most complex oxides, silicates, phosphates, carbonates and practically all inorganic materials have been the synthesized by this method. The hydrothermal method include a wide range of the piezoelectric material preparation, including magnetic, optical, ceramic and single crystals, as well as multiple …