Is the photocatalyst in the photocatalyst energy socks poisonous?

Photocatalyst is a photo-semiconductor material with photocatalytic function represented by nano-titanium dioxide. Non-toxic and harmless to human body, safe and reliable, and will not produce secondary pollution. Photocatalyst (nano-aldehyde-removing enzyme), as a new type of air purification product, is more and more used in car air purification.