Tungsten oxide may be used in heat insulating window glass, which mainly reflects its photochromic properties. Tungsten oxide powder may also be used for photocatalytic degradation of organic dyes (contaminants).
Dye, as a substance that brings us color, is almost used in all aspects of life. For example, azo dyes, which have the advantages of low synthesis cost and outstanding dyeing properties, are widely used in the dyeing of fibers, leather, wood, plastics, rubber, and food, etc. And they are also applied in the printing industry. However, as time goes by, people find that these materials that bring us color are potentially dangerous. Azo dyes are harmful dyes. In these dyes, there are carcinogenic azo bonds (-N=N-). These dyes can be absorbed by human skin and formed aromatic amines during metabolism in human body, and therefore cause carcinogenesis. Therefore, it is necessary to treat such organic pollutants. The tungsten oxide powder is the one that can be used for photocatalytic degradation of such organic pollutants.
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