Illustration showing how a composite material containing sheets of boron nitride (lattice of blue and silver balls) and nanoparticles of titanium dioxide (gray spheres) uses long-wave ultraviolet ...

Titanium dioxide (TiO 2) nanoparticles have a high refractive index (n = 2.4), making them ideal for various applications, including medicines, coatings, inks, plastics, food, cosmetics, and textiles.

Photocatalytic “smog-eating” surfaces promise local pollution reduction in Delhi, but experts warn they are no silver bullet.

Nanoparticles of titanium dioxide (TiO2) are commonly used in sunscreens as protection against ultraviolet radiation. Partly because the particles are so small, nanoscale TiO2 does not reflect visible ...