Problems needing attention in the application of nano titanium dioxide photocatalyst jr05 in building materials

  The application of nano titanium dioxide photocatalyst jr05 in building materials should pay attention to the problems
The antibacterial, bactericidal and air purification functions of nano titanium dioxide photocatalyst jr05 have been gradually recognized and known by the people, and are increasingly widely used in the field of building materials
However, the photocatalytic technology of nano titanium dioxide photocatalyst jr05 is not fully mature in the building materials industry
The following points should be paid attention to when applying photocatalyst to building materials industry:
(I) improve the photocatalytic activity and stability of nano titanium dioxide photocatalyst jr05
By adopting a series of modification methods, such as increasing surface defects, reducing catalyst particle size, precious metal deposition or transition metal ion doping, semiconductor recombination and other methods to improve the charge separation rate, inhibit carrier recombination to improve quantum efficiency, expand the absorption wavelength range of light, change the selectivity or yield of products, and improve the stability of photocatalytic materials

(II) film curing of nano titanium dioxide photocatalyst jr05 photocatalyst
The formed nano titanium dioxide photocatalyst jr05 film must be firm
At present, the curing on heat-resistant materials is to spray or dip the nano titanium dioxide photocatalyst jr05 sol on the substrate, and then sinter it at high temperature [13]
The curing of nano titanium dioxide photocatalyst jr05 photocatalyst on non heat-resistant materials is difficult because the organic material itself is not resistant to the strong oxidation of nano titanium dioxide photocatalyst jr05 photocatalyst
Although it can be coated with inorganic binder resistant to the photocatalytic decomposition of nano titanium dioxide photocatalyst jr05, a large number of inorganic binders will coat the surface of nano titanium dioxide photocatalyst jr05, resulting in a significant decline in its photocatalytic activity, Therefore, the durability and photocatalytic activity of the coating can not be considered at the same time

(III) the photocatalytic reaction of nano titanium dioxide photocatalyst jr05 only occurs on the surface of the catalyst, and its products are also adsorbed on the surface
The surface needs to be removed regularly to ensure the generation of photocatalytic effect
In this sense, photocatalytic building materials are especially suitable for rainy and humid places, but not for dry environments

(IV) the application of nano titanium dioxide photocatalyst jr05 photocatalysis technology in improving indoor air quality needs further research
At present, the photocatalytic elimination of indoor pollutants by nano titanium dioxide photocatalyst jr05 is mostly focused on laboratory research
Because the concentration of pollutants in the room is generally much smaller than that under the experimental conditions, and the size of the actual room is generally much larger than the experimental space, there is no quantitative result on how much the photocatalytic technology of nano titanium dioxide photocatalyst jr05 plays in the elimination of pollutants in people's living room, and further experimental research is needed

(V) combination of photocatalytic technology and other building environment technologies
At present, the company is committed to the research on the combination of photocatalysis technology and light conduit technology, so that the light conduit system not only has the function of natural daylighting, but also has the function of photocatalysis to improve indoor air quality [14]