Tungsten Oxide Nanoparticles

Tungsten Oxide Nanoparticles

Used in colorant and analysis reagent of chinaware; Used in producing metal tungsten material; Gas sensors; Fire-proofing fabrics; Imaging; Large-area displays; Catalysts; Ceramic pigments; Humidity sensors; Infrared switching devices; High-density memory devices; Photocatalysts; Temperature sensors; used in X-ray screen and fireproof textile; Tungstates; Wastewater treatment; Writing-reading-erasing optical devices; Smart windows; Solar energy conversion; producing WC, horniness alloy, cutting cools, super-hard mould and tungsten strips through powder metallurgy.

In the manufacture of conducting and semi-conducting materials.

In optics and mechanochemical applications.

Tungsten oxide (WO x ) is a transition metal oxide with wideranging applications. With the advent of nanotechnologies, the synthesis and analysis of WO x nanostructures has become increasingly prominent. Nanostructuring of WO x can enhance the performance of this important functional material and provides it with unique properties that do not exist in its bulk form. Exceptional qualities of nanostructured WO x compared to the bulk material include: i) increased surface-to-volume ratio, which provides more surface area for both chemical and physical interactions; ii) signifi cantly altered surface energies that allow tuning and engineering of the material’s properties, as atomic species near the surface have different bond structures than those embedded in the bulk; and iii) quantum confi nement effects, due to the inherently small size of nanostructured materials, that signifi cantly infl uences charge transport, electronic band structure and optical properties.  Nanostructured WO x is exceptionally versatile and offers unique characteristics. It has become one of the most investigated functional metal oxides impacting many research fi elds ranging from condensedmatter physics to solid-state chemistry.