Consultation on aldehyde removal technology
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The 5-nanometer titanium dioxide visible-light catalysis technology enables the formation of a nanofilm on the surface of substrates, allowing 198 types of gaseous pollutants such as formaldehyde, NH3, H2S, vehicle exhaust, and nitrogen oxides to be rapidly decomposed into non-toxic and harmless substances like water under natural light, without causing any secondary pollution. The principle is similar to plants’ \"photosynthesis\": it absorbs carbon dioxide and uses light energy to convert it into oxygen and organic substances. Are there any forum users who know what kind of technology this is and whether it’s reliable? What catalyst is used in schools? Does it need to be replaced regularly?
I don’t find it plausible – can a single metal compound really convert all those organic and inorganic substances into harmless substances like water? What reaction equation? What about reaction pressure and temperature?
Baidu: Nano-titanium dioxide is a white, fluffy powder with strong UV-blocking properties, as well as good dispersibility and weather resistance. It can be used in fields such as cosmetics, functional fibers, plastics, coatings, and paints as an ultraviolet shield to prevent damage from ultraviolet rays. It can also be used in high-end car topcoats, offering an angle-dependent color effect.
Photocatalysis in China is just shoddy; those used abroad can serve as a reference!