Nano particle size tungsten trioxide may be applied for producing thermal insulation film. And such film may be widely used in architectural window film, automobile film and other applications with good thermal insulation effect. So, it is popular among people. Moreover, tungsten trioxide nano powder may be used for the treatment of organic contaminated water due to its good photocatalytic performance. Therefore, it is necessary to conduct in-depth research on tungsten trioxide nanomaterials to better understand the heat-insulating material.
Studies have shown that two-dimensional sheet materials have higher photocatalytic activity than the same crystal structure samples of other morphologies. And it is mainly due to the different photocarrier transport rates in the two-dimensional plane and thickness direction. The transport of photo-generated carriers in the thickness direction becomes easier due to the decrease in thickness. That is because the restriction on photo-generated carriers is small and the transmission path is short in this direction. Therefore, the thinner the thickness of the synthesized two-dimensional material is, the better the photocatalytic activity of the hexagonal phase tungsten trioxide ultrathin nanosheet is. And tungsten trioxide ultrathin nanosheet can be predicted to have excellent photocatalytic activity.
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