Description
Vanadium (IV) dioxide is a kind of inorganic compound with its
chemical formula being VO2. It can undergo a phase transition at a
normal temperature (~66 °C). Its electrical resistivity and opacity
can also change several fold. These special properties make it have
many applications. For example, it can be used in chemical sensors,
energy-conserving coatings, transparent conductors and switching
materials. It can also be used as a stationary optical shutter,
optical modulators, cameras and data storage. Moreover, it can be
applied to the missile guidance system due to its infrared
modulation capability. It can also be used to make thin films which
have been used in electro-optical switches, micro-optical switch,
passive smart radiators and sunshields for spacecraft. It can also
be used in phase change computing and memory.
References
https://en.wikipedia.org/wiki/Vanadium(IV)_oxide
https://www.alfa.com/en/catalog/022957/
Chemical Properties
Blue-black powder. Insoluble in water; soluble in alkalies and acids.
Chemical Properties
Vanadium(IV) Oxide (vanadium dioxide, VO2) is a blue-black solid, having a distorted rutile (TiO2) structure. It can be prepared from the reaction of V2O5 at the melting point with sulfur or carbonaceous reductants such as sugar or oxalic acid. The dioxide slowly oxidizes in air. Vanadium dioxide dissolves in acids to give the stable (VO)2+ ions and in hot alkalies to yield vanadate(IV) species, eg, (HV2O5)?.
Uses
Vanadium(IV) oxide is used in chemical sensors, energy-conserving coatings, transparent conductors and switching materials. It acts as a stationary optical shutter, optical modulators, cameras and data storage. As infrared modulators, it is used for the missile guidance systems. Thin films made up of vanadium dioxide find applications in electro-optical switches, micro-optical switch, passive smart radiators and sunshields for spacecraft.
Definition
ChEBI: Vanadium dioxide is a vanadium oxide.
Hazard
Toxic and irritating.
Flammability and Explosibility
Non flammable
