Nano tungsten trioxide is produced by hydrothermal method, with fine particle size and high purity. Nano-tungsten trioxide has a strong absorption capacity for electromagnetic waves, and can be used as an excellent solar energy absorbing material and invisible material. Nano-tungsten trioxide has a large specific surface area, significant surface effect, and special catalytic performance. As a transition metal compound, nano-tungsten trioxide is a wide-bandgap n-type semiconductor and a potential sensitive material.
Nano tungsten trioxide is sensitive to moisture. When heated, the color changes from light to dark, to dark orange, and returns to its original color after cooling. Nano tungsten trioxide is soluble in alkali hydroxide solution, slightly soluble in acid, and insoluble in water. Nano tungsten trioxide is irritating. Significant sublimation at 850 ° C, green when molten. Stable in air, insoluble in water and inorganic acids except hydrofluoric acid, slowly soluble in ammonia water and concentrated hot sodium hydroxide solution. Nano tungsten trioxide can be used as raw material for making metal tungsten, making cemented carbide, knives, molds and drawing tungsten wire, it can also be used for powder metallurgy, it can also be used for X-ray screens and fireproof fabrics, and as a colorant for ceramics and analytical reagents, etc. Blue tungsten oxide is used to produce tungsten powder, doped tungsten powder, tungsten carbide powder, metal tungsten products, tungsten alloy and hard alloy, etc.
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