
Fig. 8. Selected images of skin stratus treated with P25TiO2NPs 10% (left) and VitaminB2@P25TiO2NPs 10% (right) under light, showing no penetration of the nanoparticles (white arrows) beyond the outer stratum corneum.
Rebecca Capua
Nano, or ultrafine, TiO2 comprises primary particles sized less than 100nm. In this grade, titanium dioxide is transparent (colourless) and boasts improved UV scattering and absorbing properties compared with larger particle-size pigmentary TiO2.
Applications
Lithopone(CAS NO.1345-05-7) is manufactured by a process in which barium sulfide solution is prepared by reducing barite ore (BaSO4) with carbon and leaching the resulting mass.