It is very hard to improve TiO2 level of Photocatalyst materials technically, that is why TiO2 concentration of Photocatalyst in current market is universally less than 1%. Because the density of TiO2 is higher than water, it will easily precipitate and condense in water in a large amount. So as to improve TiO2 level successfully and avoid precipitation, it must depend on a good dispersion technology.
Although precipitation is inevitable, with a good dispersion technology it could be dispersed evenly after shaking. Nanoyo Photocatalyst inside a container will precipitate and form a one third white solid layer after placed for two to four weeks but it will be dispersed easily by shaking. Nanoyo Photocatalyst owns a good dispersion technology so that it can raise TiO2 level without affecting the following application.

