Tungsten Oxide Special Form

Tungsten oxide has many production methods, such as solid state method, liquid phase method which has widely used and chemical deposition method, sol-gel method, microemulsion method, hydrothermal synthesis method. And using different methods can produce different structure tungsten oxide ions, such as cubic crystal system, tetragonal crystal system, hexagonal crystal system, triclinic crystal system, orthorhombic crystal system and so on. With further researches a series of nonstoichiometric and metastable valence tungsten oxide compound come after another, the researchers called such oxide tungsten as bronze phase tungsten oxide and pyrochlore phase tungsten oxide. These special form tungsten oxide has larger changes occurred in t physical chemical properties. For example bronze tungsten oxide is a compound of a class of multi-dimensional pore structure, because it has a molecular sieve mesh structure and dielectric stability, significant changes in the physical and chemical properties of tungsten oxide bronze. Which are not only conductivity and adsorption properties strong in catalysis, sensing, electrochromic, fuel cells and other fields has been widely used. This also caused widespread concern, so that researchers continue to research and development tungsten oxide special form.

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