Tungsten trioxide office heat insulating glass coating is a transparent heat shielding material that is more and more popular with people. With the increasing popularity of such a smart material, some experts introduced a simple process to synthesize the raw material tungsten trioxide with various nanomorphologies, i.e. nanorods, nanowires, and nanosheets.
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The experts prepared the tungsten trioxide nanoparticles by solvothermal treatment using tungsten hexachloride (WCl6) as a raw material. And they adopted ethanol, mixed solvent (ethanol + water) and water as solvents at 200°C for 10 h. The various crystalline phases of tungsten oxide, such as hexagonal WO3 platelets, and monoclinic WO3 nanosheets, were synthesized by simply changing the composition of the solvent. The oxygen, which was contained in water, played an important role in the final tungsten oxide phase. Using this simple process, it will be possible to control the crystalline phase and morphologies of nanostructured tungsten oxide system.
