Titanium is a chemical element, chemical symbol Ti, atomic number 22, located in the fourth cycle of the chemical periodic table, group IVB. It is a silver-white transition metal characterized by light weight, high strength, metallic luster and resistance to wet chlorine gas. The most common compound of titanium is titanium dioxide, which can be used to make white pigments. In the past, people used to mine titanium ore, the main purpose is to obtain titanium dioxide.

1.The nature of titanium dioxide
Titanium dioxide (chemical formula: TiO2) is a white or bulk amphoteric oxide with a molecular weight of 79.83.
Titanium dioxide is a compound of titanium, a pure substance composed of two or more elements (different from elemental matter). A compound has certain properties, different from the elements or ions it contains, and other compounds.
Properties of crystal form: TiO2 has three main crystal forms such as rutile type, anatase type and plate titanium type.
Optical properties: Since TiO2 nanoparticles can both scatter and absorb ultraviolet light, they have strong ultraviolet shielding properties. Often incorporated as a sunscreen into textile fibers, ultrafine titanium dioxide powder is also added to sunscreen creams to make sunscreen cosmetics.
Physical properties: TiO2 has a high melting point and is also used to make fire-resistant glass, glaze, enamel, clay, and high temperature resistant experimental vessels. TiO has high gloss and hardness, and has the best opacity, optimum whiteness and brightness. It can be used as a matting agent for white inorganic pigments and enamels. The performance of TiO2 with semiconductors is very important for the electronics industry, and the industrial field utilizes the above characteristics to produce electronic components such as ceramic capacitors.
Chemical properties: TiO2 is non-toxic, insoluble in water or dilute sulfuric acid, and because it is chemically stable and difficult to change, it is considered to be the best white pigment in the world.
Titanium dioxide in various fields
As a new multi-functional material in the 21st century, titanium dioxide is widely used in industry, food, environmental protection, medicine and so on.
1.Industrial application
Titanium dioxide is an important white pigment and porcelain glaze. Can also be used in paints, inks, plastics, rubber and paper, chemical fiber, watercolor paint and other industries. Titanium dioxide is the whitest thing in the world, five times whiter than the commonly used pigment zinc white, so it is the best pigment for white paint. Titanium dioxide can be added to paper to make the paper white and opaque, and the effect is 10 times larger than other materials. Therefore, titanium dioxide is added to banknote paper and art paper. In order to lighten the color of the plastic and make the rayon soft, it is sometimes necessary to add titanium dioxide.
Titanium dioxide is the main component in the surface coating of the electrode. It is a good slagging agent, deoxidizer diluent, binder and stabilizer for flux. The slag of the electrode made of the slag has low melting point, small viscosity, and can be used for AC and DC. The arc is fast during operation, the arc is stable, the slag is easy to remove, the weld is beautiful, and the mechanical performance is good. In addition, ultrafine titanium dioxide has excellent UV shielding and transparency and is widely used in cosmetics, food packaging plastics, rayon and natural fibers.

2. Food application
The US Food and Drug Administration stipulates that TiO2 can be used as all food white pigment. The pigment additive titanium dioxide can be safely used in general colored foods such as preserved fruits, jellies, fried foods, cocoa products and the like.
3. Medical applications
As a medicinal white pigment, TiO2 has the advantages of low pigment content and low harmful impurities. It is suitable for the manufacture of opaque capsules, tablet film coatings, creams, medicinal packaging materials and pharmaceutical inks. It has the advantages of uniform particle size and good dispersibility. It can be used as a white coloring agent to prepare film coating suspensions, sugar coatings and gelatin capsules. It can also be mixed with other coloring agents. It can be used as a white coloring agent in the dispersion of granular water and gelatin. A dermatological preparation can also be used as an excipient for a drug instead of starch.
4. Application of environmental protection
TiO2 can purify air, antibacterial and deodorize. Environmentally harmful gases can be classified into indoor harmful gases and atmospheric pollutant gases. The indoor harmful gases mainly include formaldehyde released from decorative materials and methyl mercaptan, hydrogen halide and ammonia produced in the living environment. TiO2 can decompose and oxidize these substances adsorbed on the surface by photocatalysis, thereby reducing the concentration of these substances in the air and reducing or eliminating environmental discomfort.
Titanium dioxide has been widely concerned and applied for its excellent catalytic performance, stable chemical properties, environmentally friendly, non-toxic, and long service life. Titanium dioxide has a huge market prospect in the future.

SAT NANO can supply TiO2 nanopowder 30-50nm, 100nm for customer to do different research, please feel free to ask us a quote.