Oxide Dispersion

Titanium oxide dispersion: Because of its unique properties, titanium dioxide is widely used and is well known in nanoscience and nanotechnology. Titanium dioxide dispersions are one of the first materials to be used in nanotechnology products. However, the potential toxicity of titanium dioxide nanodispersion is a controversial subject. Many cosmetic companies use titanium dioxide nanoparticles. Because of its bright whiteness, it is used in products such as paints, coatings, papers, inks, toothpaste, face powder, and food coloring.

Titanium oxide dispersion is a well-known photocatalyst for water and air treatment as well as for catalytic production of gases. The general scheme for the photocatalytic destruction of organics begins with its excitation by supra band-gap photons and continues through redox reactions where OH-radicals, formed on the photocatalyst surface play a major role.

Titanium oxide dispersions are non-toxic and therefore are used in cosmetic products (sunscreens, lipsticks, body powder, soap, pearl essence pigments, and kinds of toothpaste) and also in special pharmaceutics. TiO₂ is even used in foodstuffs. TiO₂ photocatalytic characteristics are greatly enhanced due to the advent of nanotechnology.

Titanium oxide nanoparticles dispersions can be used for a variety of applications including self-cleaning, water treatment, antibacterial, and air purification due to their effective photocatalytic activity. Furthermore, the TiO₂-based hybrid nanomaterials are one of the most common nanocomposites, which are widely applied in medicine, lithium batteries, UV-screening, sensors, and hybrid solar cell materials. For these applications, TiO₂ nanoparticle dispersions are generally coated on suitable substrates.

Titanium oxide dispersion is mostly used as a white pigment because of its high diffraction index, strong light scattering, incident-light reflection capability and a high UV resistance that makes TiO2 the standard pigment found in white dispersion paints with high hiding power. Since light scattering does not occur anymore in nanoscale particles, the white TiO2 pigments used are almost exclusively rutile modification particles with grain sizes in the micrometer range.