
Nano particle size tungsten trioxide is a kind of material for preparing transparent thermal insulation nanopowder, which may be applied to heat-insulating glass in the form of heat-insulating film. This kind of film can block the infrared radiant energy of solar energy in the summer, and can block the far-infrared outflow of indoor heating in winter. Tungsten trioxide is also a photocatalyst that can be used to characterize its photocatalytic properties by photocatalytic degradation of organic dyes. Sunlight exposure is…