What is the difference between nanometer titanium dioxide and photocatalyst?

The difference between nanometer titanium dioxide and photocatalyst;

I. Nano-titanium dioxide

Nano-titanium dioxide is a kind of white loose powder, which has strong ultraviolet shielding effect, good dispersibility and weather resistance. It can be used in cosmetics, functional fibers, plastics, coatings, paints and other fields as an ultraviolet shielding agent to prevent the invasion of ultraviolet rays. It can also be used for top-grade automobile topcoat, which has the effect of changing color with angle.

Second, photocatalyst

Photocatalyst is a kind of optical semiconductor material with photocatalytic function, represented by nano-titanium dioxide. It is coated on the surface of the substrate and has a strong catalytic degradation function under the action of ultraviolet light and visible light: it can effectively degrade toxic and harmful gases in the air; Can effectively kill a variety of bacteria, and can decompose and harmlessly treat toxins released by bacteria or fungi; At the same time, it also has the functions of in addition to formaldehyde, deodorization, pollution prevention and air purification.

reference data

Baidu encyclopedia. Baidu Encyclopedia [reference time 20 17- 12-24]