Nano grain size tungsten trioxide may be applied for preparing ceramic microsphere to make it have the characteristics of high visible light transmittance, high heat insulation, energy saving and environmental protection. Thus, it may be used for producing various transparent thermal insulation films or thermal insulation PC sheets of different thicknesses.
Such film or sheet may be used in building window glass, skylight, and so on, which will achieve the effect of heat insulation and heat preservation, and therefore greatly improves human comfort.
In addition, there are reports on the research on the electrochromic property of tungsten trioxide, such as the study on electrochromism of tungsten trioxide nanorods. The tungsten trioxide nanorods were prepared on the aluminum-based nano lattice by DC magnetron sputtering method combined with anodization method. And the electrochromic property of the materials under periodic voltage was measured by an ultraviolet-visible spectrophotometer. The results showed that the sample undergoes a color change from deep blue to colorless, following the dual injection theory of ions and electrons.
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