WO3 composite coating is a good choice for formaldehyde degradation. It is the photocatalytic performance of tungsten trioxide that make WO3 composite coating have the performance of degrading formaldehyde, thereby improving air quality and human health.
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Preparation of WO3 Composite Coating for Formaldehyde Degradation
Step One: Weigh a certain amount of H2WO4, and calcine the weighed H2WO4 at different temperatures for 5-8 h to prepare a WO3 visible light photocatalyst.
Step Two: The prepared WO3 is dispersed with the dispersion polyacrylamide and mixed with the coating, and then mechanically stirred and ultrasonically oscillated.
Step Three: WO3 composite coating prepared in Step Two is evenly coated on the surface of the substrate such as glass or wall. Under the irradiation of 8w fluorescent lamp, such a substrate was observed to know its degradation conditions of formaldehyde gas. The results show that after 8h, the degradation rate of WO3 composite coating to formaldehyde is about 8%.
