tungsten oxide with nanostructure

Metal oxides are the key ingredients for the development of many advanced functional materials and smart devices. Nanostructuring has emerged as one of the best tools to unlock their full potential. Tungsten oxides (WO_x) are unique materials that have been rigorously studied for their chromism, photocatalysis, and sensing capabilities. However, they exhibit further important properties and functionalities that have received relatively little attention in the past. This Feature Article presents a general review of nanostructured WO_x, their properties, methods of synthesis, and a description of how they can be used in unique ways for different applications.
Nano tungsten oxide particles are produced by wire explosion process. It is realized that by exploding tungsten conductor in lower pressure of oxygen, unreacted phase of tungsten was present and it could be reduced by increasing the operating pressure and increasing the amount of energy deposited to the exploding conductor. 

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Tungsten Oxide Powder Synonyms

Tungsten oxide powder is called tungsten oxide , is compound of tungsten and oxygen.

Tungsten Oxide Powder Synonyms as following:
tungsten oxide, tungsten(IV) oxide (WO2), tungsten(VI) oxide (WO3), tungsten trioxide, tungsten(VI) trioxide, tungstic anhydride (WO3), ditungsten pentaoxide, tetratungsten undecaoxide, tungsten oxide, tungsten oxide (W2O5), scheelite, wolframite, ferberitetungsten oxide (W4O11),  
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about Tungsten Oxide Film

Thermodynamically, tungsten trioxide (WO3) is reported to be stable in acidic
environments. However, the relatively high dissolution rate of WO3 in acidic solution has long been recognized by those investigating the mechanism of WO3
 coloration (electrochromism) for application in the flat panel display industry(2). To date the exact mechanism by which this dissolution process occurs remains elusive. While in alkaline environments the dissolution of WO3 is both thermodynamically favorable and experimentally observed, there has been no generalgreement on the dissolution mechanism. To examine oxide composition, structure, and hydration as a function of solution pH and applied potential in situ, surface enhanced Raman spectroscopy was employed. In addition,electrochemical impedance spectroscopy was used in conjunction with rotating disk electrode experiments to examine the effects of mass transport on the native tungsten oxides as a function of solution pH and applied potential.

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Computed Properties of Cesium Tungstate

Computed Properties of Cesium TungstateMolecular Weight:513.6485 [g/mol]
Molecular Formula:Cs2O4W-6
H-Bond Donor:0
H-Bond Acceptor:4
Rotatable Bond Count:0
Exact Mass:513.741485
MonoIsotopic Mass:513.741485
Topological Polar Surface Area:4
Heavy Atom Count:7
Formal Charge:-6
Complexity:0
Isotope Atom Count:0
Defined Atom Stereocenter Count:0
Undefined Atom Stereocenter Count:0
Defined Bond Stereocenter Count:0
Undefined Bond Stereocenter Count:0
Covalently-Bonded Unit Count:7

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Phosphotungstic Acid

Phosphotungstic acid (PTA), tungstophosphoric acid (TPA), is a heteropoly acid with the chemical formula H3PW12O40. It is normally present as a hydrate. EPTA is the name of ethanolic phosphotungstic acid, its alcohol solution used in biology. It has the appearance of small, colorless-grayish or slightly yellow-green crystals, with melting point 89 °C (24 H2O hydrate). It is odorless and soluble in water (200 g/100 ml). It is not especially toxic, but is a mild acidic irritant. The compound is known by a variety of different names and acronyms (see 'other names' section of infobox).
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Cadmium Tungstoborate

 

CAS No. 1306-26-9
Chemical Name: CADMIUM BOROTUNGSTATE
Synonyms: CADMIUM TUNGSTOBORATE;CADMIUM BOROTUNGSTATE
CBNumber: CB0687173
Molecular Formula: B2Cd5H36O98W24
Formula Weight: 6600.06
MOL File: 1306-26-9.mol
CADMIUM BOROTUNGSTATE Property
Safety
RIDADR : 2570
HazardClass : 6.1(b)
PackingGroup : III

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Sodium Phosphotungstate

CAS No. 51312-42-6
Chemical Name: SODIUM PHOSPHOTUNGSTATE
Synonyms: 12wo3·h3po4·x h2o;Sodium phosphotungst;SodiuM phosphotungstat;SODIUM PHOSPHOTUNGSTATE;SODIUM TUNGSTOPHOSPHATE;Sodium phosphowolframate;phosphotungstic acid sodium;SodiuMdodecatungsto phosphate;PHOSPHOTUNGSTIC ACID SODIUM SALT;SODIUM PHOSPHOTUNGSTATE N-HYDRATE
CBNumber: CB6161066
Molecular Formula: Na3O40PW12
Formula Weight: 2946
MOL File: 51312-42-6.mol
SODIUM PHOSPHOTUNGSTATE Property
mp : 350°C 
storage temp. : Store at RT.
CAS DataBase Reference: 51312-42-6(CAS DataBase Reference)
Safety
Hazard Codes : Xn
Risk Statements : 36/37/38-22
Safety Statements : 26-36
RIDADR : 1479
WGK Germany : 3
RTECS : TH5775000
HazardClass : 5.1
PackingGroup : III

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