Violet tungsten oxide nanoparticles may be applied for manufacturing heat-insulating energy-saving film. Nano violet tungsten oxide is a kind of thermal insulation medium, and the prepared smart film is environmentally friendly for applying in automobile front windshield, building curtain wall glass, architectural glass doors and windows. So, the common glasses become energy-saving glasses. And these glasses are anti-UV, anti-glare, anti-fog, water-proof, fire-proof and scratch-resistant with long service life.

Violet tungsten oxide nanoparticles may be applied for producing transparent heat insulation glass. Then, what is violet tungsten oxide nanopowder? Nano violet tungsten oxide is a semiconductor material, which is capable of absorbing light of a specific wavelength. After performing a certain reduction treatment, the violet tungsten oxide can accumulate a large amount of free electrons on its surface, thereby making it have the characteristics of plasmon resonance absorption of near-infrared light to play an effective role in shielding heat radiation.

Violet tungsten oxide nanoparticles, or W18O49, may be used for producing heat-insulation glass coating. The popular heat insulating media- nano violet tungsten oxide is the only known non-stoichiometric tungsten oxide which exists in pure form with unique photochromic property, gaschromic property, photocatalysis and other properties.

Violet tungsten oxide nanoparticles for nano transparent thermal insulation coating can be synthesized in one step by a solution method with a short reaction time and a low reaction initiation temperature. Moreover, since a large amount of gas is generated during the reaction, the sufficient contact with the air is hindered, so the product of violet tungsten oxide phase is relatively simple to provide favorable conditions for the subsequent utilization of the powder.