Tungsten Oxide

Cesium tungsten bronze (Cs x WO 3 ) is synthesized by solid phase method or liquid phase method with cesium carbonate and sodium tungstate as raw materials. Therefore, cesium tungsten bronze is also called cesium tungstate. Cesium tungsten bronze Cs x WO 3  has the function of oxygen compounds in eight face special structure, with low resistivity and low temperature superconducting propertiesaterials. It mainly used to make high-temperature insulation coating, building glass, Low-E glass, automobile insulation film, plant planting shed, LCD screen and so on. Synthetic of cesium tungsten bronze can be obtained by solid phase method and liquid phase method. In the earlier period, most of cesium tungsten bronze was prepared by solid phase synthesis, such as vapor phase reduction and hydrogen reduction, but the synthesis of solid phase is difficult and the cost is too high. Therefore, with the increasing attention of cesium tungsten bronze, more and more scholars began to stu...

Bismuth tungstate (Bi 2 WO 6 ) is an oxide with perovskite like structure, and is a typical n-type semiconductor. Because of its unique crystal structure, Bi 2 WO 6  has the properties of thermoelectric, ferroelectric, piezoelectric, oxygen ion conductor, luminescence, nonlinear dielectric induction and catalysis. The preparation methods of bismuth tungstate include solvothermal method, precipitation method, microemulsion method, hydrothermal method, etc.. Among the many methods of liquid phase preparation, hydrothermal process has high utilization ratio of material and less energy consumption because of its simple operation process. But there is a clear flaw in hydrothermal methods, that is, the water sensitive compounds are not satisfactory, so people will use organic solvents instead of "water" in hydrothermal method, which is called solvothermal method. The principle of solvothermal method is similar to thydrothermal method. It also works in a special sea...