The difference between rutile titanium dioxide and anatase titanium dioxide

Titanium dioxide is mainly divided into three types: plate titanium, anatase titanium dioxide and rutile titanium dioxide, rutile titanium dioxide, anatase titanium dioxide is two important types of titanium dioxide, at present in the market these two kinds of application range is the most extensive, but the nature of the two is very different, here are your details.

The difference between anatase titanium dioxide and rutile titanium dioxide application field

Plate titanium type is an unstable crystal, no industrial use value, Anatase titanium dioxide (Anatase) referred to as type A, and Rutile titanium dioxide (Rutile) referred to as type R, have a stable lattice, is an important white pigment and porcelain glaze, Compared with other white pigments, it has superior whiteness, coloring power, hiding power, weather resistance, heat resistance, and chemical stability, especially no toxicity.

Anatase type titanium white powder, namely A type titanium white powder. It is an excellent white powder pigment with good light scattering ability, good whiteness, strong hiding power, high chemical stability, non-toxic and tasteless, and no stimulating effect on the human body. It is widely used in many industrial fields, such as coatings, plastics, papermaking and printing inks.

Rutile type titanium dioxide, namely R type titanium dioxide. Combined with the production quality control experience of rutile titanium dioxide by sulfuric acid process, the collection of innovative research on inorganic coating, organic treatment, salt treatment, calcination control, hydrolysis and product application, the use of advanced hue and particle size control, zirconium silicon aluminum phosphorus multiple inorganic coating and new organic treatment technology, the development of a new generation of high-grade universal (water-based) rutile titanium dioxide. Suitable for all kinds of architectural paint, industrial paint, anti-corrosion paint, ink, powder coating and other industries.

Difference of chemical properties between anatase titanium dioxide and rutile titanium dioxide

The main difference between them is the degree of distortion and the way of interconnection of octahedra.

The difference of crystal cell structure between rutile and anatase also leads to the different physical and chemical properties of these two crystal forms.

From the thermodynamic point of view, rutile is relatively the most stable crystal, melting point of 1870℃; Anatase is the low temperature phase of titanium dioxide, which is generally converted to rutile at 500℃~600℃. The essence of TIO 2 crystal transformation is the structural rearrangement of unit octahedron of unit cell structure. In rutile crystal structure, the atoms are arranged more densely, the density, hardness, dielectric constant are higher, and the scattering of light is also greater.

Therefore, rutile is commonly used as a white coating and anti-ultraviolet material, which has a very strong shielding effect on ultraviolet rays and has a wide range of applications in industrial coatings and cosmetics.

The band gap width of rutile is slightly larger than that of rutile, and the photogenerated electrons and holes are not easy to combine on the surface. Therefore, Ruqinite has higher photocatalytic activity, which can directly use the ultraviolet light in the sunlight for photocatalytic degradation, and will not cause secondary pollution.

Therefore, anatase is a commonly used photocatalytic material to deal with environmental pollution problems.