Nano Yellow Tungsten Oxide Applied for Pollutant Adsorption

Nano yellow tungsten oxide, or nano tungsten trioxide or nano WO3, is a new type of nano material that can be applied for pollutant adsorption. The particle size of tungsten trioxide is very small, so it has a large specific surface area, which makes it have good physical adsorption and chemical adsorption properties. In addition, WO3 is an acidic oxide, and its surface has acidic properties, thereby it can effectively adsorb basic dyes and heavy metal ions.

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After adsorbing organic pollutants, nano yellow tungsten oxide can be used for photocatalytic degradation of the adsorbed organic pollutants to achieve the purpose of regeneration, thereby reducing the cost. It has been reported that nano WO3 has good adsorption stability. WO3 nanosheets have the best adsorption performance for methylene blue, and WO3 octahedron has the strongest photocatalytic activity. Certainly, in addition to being used for pollutant adsorption, nano yellow tungsten oxide can also be used to fabricate smart widows, gas sensors, and so on.

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