What is the crystal structure of TiO2?

Rutile is an oxide mineral composed of titanium dioxide (TiO2), the most common natural form of TiO2….

Rutile
Crystal system	Tetragonal
Crystal class	Ditetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m)
Space group	P42/mnm

Is titanium dioxide a crystal?

The physical, optical, electrical and chemical properties of titanium dioxide (TiO2) depend greatly on the amorphous or crystalline phase of the material. TiO2 is a complex material with three crystalline phases, two of which are commonly observed in thin films-anatase and rutile.

What is a rutile crystal?

Rutile, often referred throughout history as Red Schorl,is a rare titanium oxide mineral that crystallizes in the form of grains, masses, prismatic crystals and long needle like crystals. These needle shaped crystals can be found penetrating other minerals such as Quartz, Amethyst, and Hematite.

How many atoms are in TiO2?

Its chemical formula is TiO2, which means it consists of one titanium atom and two oxygen atoms (hence dioxide). It has a CAS (Chemical Abstracts Service) registration number of 13463-67-7.

What type of solid is TiO2?

Titanium dioxide is a titanium oxide with the formula TiO2.

What is the purpose of TiO2?

Titanium dioxide is odourless and absorbent. Its most important function in powder form is as a widely used pigment for lending whiteness and opacity. Titanium dioxide has been used as a bleaching and opacifying agent in porcelain enamels, giving them brightness, hardness, and acid resistance.

How many formula units of TiO2 are in the unit cell?

Each unit cell has 2 formula units of TiO2 structure.

How to prepare anatase TiO2 single crystals?

Titanium tetrafluoride aqueous solution (varying in concentration between 2.67 and 5.33 mM) and hydrofluoric acid (10 wt%) were used as the precursor and the crystallographic controlling agent, respectively, to prepare anatase TiO 2 single crystals. The reaction was carried out in a Teflon-lined autoclave at 180 °C for 2 to 20 h.

What is anatase titanium dioxide?

Anatase is always found as small, isolated and sharply developed crystals, and like the thermodynamically stable rutile (the more commonly occurring polymorph of titanium dioxide), it crystallizes in the tetragonal system. Anatase is metastable at all temperatures and pressures, with rutile being the equilibrium polymorph.

What is anatase?

Jump to navigation Jump to search. Anatase is a mineral form of titanium dioxide (TiO2). The mineral is almost always encountered as a black solid, although the pure material is colorless or white. Two other mineral forms of TiO2 are known, brookite and rutile.

Does hydrofluoric acid control the morphology of uniform anatase TiO2 single crystals?

On the basis of theoretical predictions, we have synthesized uniform anatase TiO 2 single crystals with a high percentage (47 per cent) of {001} facets using hydrofluoric acid as a morphology controlling agent.