Tungsten trioxide has many applications in everyday life. It is often used in industrial X-ray screen phosphors and fireproof fabric manufacturing tungstate. Because of its rich yellow elements, tungsten oxide is also used as the pigment in ceramics and paints. Tungsten trioxide has been applied in the production of electricity electrochromic windows, smart windows. These windows are glass with the electric switch, and its transmittance and the applied voltage can be changed. A part of the tungsten oxide is used in the production of chemical products, such as paints and coatings, catalysts of the petroleum industry. However, tungsten oxide is an intermediate product. A large amount of tungsten oxide is used in the metal tungsten powder and tungsten carbide powder, and then used in the production of tungsten metal products production, and widely used in the production of tungsten alloy products, such as tungsten copper, tungsten nickel, tungsten nickel-iron, tungsten silver, tungsten rhenium, tungsten thorium, etc., and the tungsten carbide products with the basic material of tungsten has the most widely application in the contemporary industry field. Tungsten trioxide has excellent performance in electrochromic, catalysis, gas sensing and other aspects, its composite oxides, tungsten bronze, generally refers to the metal oxide with deep metallic luster color, and usually metal conductors or metal-semiconductors, the formula of tungsten bronze is AxWO3, but with different types of cations and the number of moles ( different A, x value), the structure and color shades of the compounds will vary. Currently potassium cesium tungsten bronze and tungsten bronzes cesium are relatively common, cesium tungsten bronze is widely used in the preparation of the conductive thin film and insulating agent in glass transparent insulation paint because of its low resistance and excellent transmittance of visible and near-infrared shielding properties.

 

A preparation method of cesium tungsten bronze ultra-fine powder, the steps are as following. (1) Cesium salt and tungsten salt are weighed as the Cs / W molar ratio of 1: (1.5 to 2.8), and introduce chelating agent and alcohol reagent, react at 170 °C for 3h; (2) The mixed solution obtained was put into the pressure bomb and react at 260 ~ 270 °C for 5 ~ 8h; (3) The reaction materials obtained should be washed and centrifuged. the complete crystals cesium tungsten bronze powder will be obtained after being dried in the vacuum at 80 °C.