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Nano tungsten trioxide powder, for preparing thermal insulation dispersion liquid, has many different preparation methods. At present, there are mainly hydrothermal method, sol-gel method, microemulsion method, and precipitation method, etc. Among them, the hydrothermal method is commonly used to synthesize WO3 nanowires, WO3 nanorods, WO3 nanotubes, WO3 nanobelts, WO3 nanoparticles and WO3 nanofilms. By adopting hydrothermal method, using Na2WO4 as raw material and K2SO4 as an auxiliary agent, WO3 nanowires with a diameter of 10nm can be synthesized (The length…

The reason why tungsten trioxide powder can be used to prepare thermal insulation dispersion is that WO3 has photochromic properties. And this kind of performance is due to the unique phase structure of WO3, which results in excellent and unique physicochemical properties. Tungsten trioxide also has good application prospects in the fields of photocatalytic materials, photosensitive materials, electrochromic materials, and thermochromic materials, such as photochromic devices, solar energy devices, smart windows, sensors, photoelectrochemical devices, and the like. This is also…

Tungsten trioxide powder applying for thermal insulation dispersion liquid has high absorption efficiency of sunlight. They are mainly near infrared rays and ultraviolet rays in the sunlight. Tungsten trioxide is also a type of potential n-type semiconductor photocatalyst after titanium dioxide (TiO2). The photocatalytic activity of tungsten trioxide for degrading pollutants in water is high, especially for the degradation of diazo dyes. Tungsten trioxide is also a cheap and stable transition metal oxide with a low band gap (about 2.6-2.7eV).…

Tungsten trioxide nanopowder for thermal insulating glass not only has high thermal insulation property, but also has high transmittance of visible light. Therefore, this kind of transparent heat-insulating coating (WO3 coating) will become the main development direction of energy-saving technology in building glass in the future. What should be noted is that the transparent heat-insulating glass also has the characteristics of simple production process and low cost (in the long run). In addition, this type of thermal insulation material, compared…

Tungsten trioxide nanopowder applying for heat insulation coating may be synthesized by hydrothermal method. And you may know the result that the hydrothermal temperature has an important influence on the morphology and grain size of the synthesized WO3 powder. The photo below shows the SEM image of WO3 powder prepared at different hydrothermal temperatures. As can be seen from the picture, the reaction temperature has a significant influence on the morphology and grain size of the synthesized product. The WO3…

Tungsten trioxide nanopowder for thermal insulation coating may be prepared by hydrothermal method. The reason why tungsten trioxide can be applied as thermal insulation material is that it has photochromic property. So, why not analyze the morphology of the synthesized powder? It can provide basis for the exploratory study of the photochromism mechanism of WO3 powder! Morphology Analysis of Tungsten Trioxide Powder Synthesized by Hydrothermal Method The following figure shows the SEM image of WO3 powder prepared at different pH…

Tungsten trioxide nanopowder applying for thermal insulation film may be synthesized by hydrothermal method. And the XRD diffraction peak gradually sharpens with the increase of the hydrothermal temperature under the same reaction conditions. According to Scherrer formula, it shows that the grain size of tungsten trioxide gradually becomes larger. And the peak intensity of each diffraction peak gradually increases as the reaction temperature increases, indicating that the degree of crystallinity of the synthesized product gradually becomes stronger. The reason may…

Tungsten trioxide nanopowder applying for thermal insulation paper may be synthesized by hydrothermal method using Na2WO4 and HCl as raw materials. And the influence of different hydrothermal reaction temperatures on the structure, morphology and photochromic properties of tungsten trioxide are analyzed. Influence of Hydrothermal Temperature on Synthesis of Tungsten Trioxide The following figure shows the XRD pattern of WO3 powder prepared at different hydrothermal temperature when the pH value of the reaction system is 1.0. In the figure, e: T=80°C;…

Nano tungsten trioxide for ceramic microsphere may be synthesized by hydrothermal method. If the pH value of the reaction system is 1.0 and 1.5, the synthesized product is tungsten trioxide of hexagonal phase. And if the pH value is 2.0 and 2.5, the synthesized product is tungsten trioxide of cubic phase. According to the analysis, the reason why the synthesized tungsten trioxide is different in phases is that the H+ concentration of the reaction system is different during the adjustment…

Nano tungsten trioxide, which may be applied for producing nano-ceramic color master, may be synthesized by hydrothermal method using sodium tungstate and hydrochloric acid as raw materials. Then, the influence of different pH values on the structure, morphology and photochromic properties of tungsten trioxide are analyzed. Influence of pH Value of Hydrothermal System on Synthesis of Tungsten Trioxide The figure below shows the XRD pattern of WO3 powder prepared at different pH value at 120°C. In the figure, a: pH…