Oxygen-deficient tungsten oxide can degrade methyl orange solution, but the degradation reaction belongs to the catalytic reaction or ordinary chemical reaction, still need further verification. To verify whether the sample degrades methyl orange is a catalytic reaction or a chemical reaction, whether the crystal structure of the oxygen-deficient tungsten oxide has been degraded after the degradation experiment can be observed to determine its reaction catalytic mechanism.

Oxygen-deficient tungsten oxide, as a new material, offers superior performance advantages over conventional tungsten oxide. The determination of its catalytic properties, the main use of methyl orange method to determine the structural characteristics of oxygen-deficient tungsten oxide.

XRD patterns of tungsten oxide nanoball structures grown at a substrate temperature of 800 ° C for a holding time of 15 minutes. The diffraction peak at 23.5 ° in the XRD spectrum corresponds to the monoclinic γ-phase tungsten oxide surface, while the diffraction peaks at 41 °, 58 ° and 74 ° correspond to the cubic tungsten element. Among them, the diffraction peak of crystal orientation is stronger, so the crystallinity of tungsten oxide is higher on the crystal orientation, and the lattice constant is 0.3728 nm.

The Pt doping technique can fully improve the electrochromic properties of the tungsten oxide nano flower film, and the Pt doping process of the tungsten oxide nano flower film is as follows:

As a new type of material film, tungsten oxide nano-flower film has its unique performance advantages, so its preparation process has a very important role. Tungsten oxide nano flower film preparation process is as follows:

Due to the presence of contact junctions in tungsten oxide nanoflowers, nanostructures that cross each other have different atomic adsorptions and thus different surface electronic states. Different surface states of electrons will form different surface potentials and a surface barrier appears at their contact junctions.

When the temperature is gradually raised above 800 ° C, tungsten will not be evaporated because the melting point of tungsten is 3420 ° C. While the tungsten oxide has a boiling point of 800 ° C, the tungsten oxide will sublimate to vapor tungsten oxide. At the same time, it will follow the gas-solid reaction model model, tungsten oxide nano flower structure growth mechanism is as follows:

In general, the HRC hardness of tungsten based cemented carbide is between 24~32, and at present the market needs tungsten based alloy products with high hardness special-shaped parts or plates, the hardness of HRC alloy for more than 35, now can only rely on the forging deformation treatment the hardness, but the complexity of the production process, equipment investment, the production cost is high, the profit is very low, the lack of market competitiveness;

As a semiconductor material (its band gap can be 2.4 to 2.8eV), tungsten oxide is widely used in photoelectrochemistry. The violet tungsten WO_2.72 has been paid special attention to by the researchers because of its unique properties and structures.