Tungsten Oxide (WO3) Nanoparticles – Properties, Applications

Nanoparticle research had progressed rapidly in the recent years mainly due to the unique properties of basic elements that are brought about by altering their atomic and molecular properties. By virtue of these properties, nanoparticles have found many applications in the field of biomedicine, cosmetics, electronics, coatings and plastics, etc. This article deals with the properties and applications of tungsten oxide nanoparticles.
Tungsten oxide (WO₃) nanopowders or nanoparticles are available in the form of nanofluids or faceted high surface area oxide particles exhibiting magnetism. Other forms in which these particles are available are dispersed, transparent, high purity and coated forms.

Chemical Properties

The following tables list the chemical properties of tungsten oxide.

Chemical Data
Chemical symbol	WO3
CAS No	1314-35-8
Group	Tungsten 6 Oxygen 16
Electronic configuration	Tungsten [Xe] 4f14 5d4 6s2 Oxygen [He] 2s2 2p4

Chemical Composition
Element	Content (%)
Tungsten	79.29
Oxygen	20.69

Physical Properties

Tungsten oxide nanoparticles appear in the form of a yellow powder having a nearly spherical morphology. The table below provides the physical properties of these nanoparticles.

Properties	Metric	Imperial
Density	7.16 g/cm3	0.258 lb/in3
Molar Mass	231.84 g/mol	-

Thermal Properties

The thermal properties of tungsten oxide nanoparticles are as below.

Properties	Metric	Imperial
Melting Point	1473 °C	2683° F
Boiling Point	1700° C	3092° F

Applications

Given below are some of the chief applications of tungsten oxide nanoparticles:

• In the manufacture of conducting and semi-conducting materials
• In optics and mechanochemical applications.

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