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Tungsten trioxide powder for thermal insulation master batch may be prepared by hydrothermal method using Na2SO4 as an additive. And the obtained tungsten trioxide was analyzed to know its photocatalytic performance. The sample was a hexagonal phase tungsten trioxide nanowire obtained using 0.125M Na2SO4 as an additive. The sample was used to direct photodegrade rhodamine B solution under irradiation in sunlight. The experimental results were shown in the following picture. In the picture, “a” was the UV-visible absorption curve, “b”…

Nano tungsten trioxide has good absorption properties of ultraviolet light and near-infrared light and therefore can be applied for the preparation of thermal insulation dispersion. The photocatalytic activity of tungsten trioxide also reflects its light absorption properties. Therefore, it is conducive to understand the properties of tungsten trioxide by analyzing the characteristics of tungsten trioxide as a photocatalyst. When tungsten trioxide is used as a photocatalyst, the grain size of the photocatalyst is an important factor affecting the photocatalytic activity…

Nano tungsten trioxide for thermal insulation dispersion liquid may be synthesized using Na2SO4 as an additive, by hydrothermal method. And then, analyzing the Raman spectrum of WO3 to reveal whether the product contains crystal water or not. Raman spectra analysis of WO3 prepared using different concentrations of Na2SO4 additive was done, and the results were shown in the picture below. The concentration of Na2SO4 in “a” was 0.5M, the concentration of Na2SO4 in “b” was 0.25M, and the concentration of…

Nano tungsten trioxide may be applied for producing thermal insulation master batch due to its photochromic properties. The phase structure of the nano grain size tungsten trioxide plays an important role in its photochromic properties. Therefore, the phase structure of the WO3 needs to be analyzed, and the composition of the WO3 nanocrystals must also be analyzed. In order to further determine the composition of WO3, WO3 nanocrystals prepared by adding 0.125M Na2SO4 additive were selected for EDS characterization. The…

Tungsten trioxide for thermal insulation dispersion may be prepared by hydrothermal method using Na2SO4 as an additive. The reason why WO3 can be used for preparing heat insulation material is that WO3 has good light absorption performance. It mainly absorbs ultraviolet light and near-infrared light in sunlight. Therefore, it is necessary to study the influence of the concentration of additive Na2SO4 on the light absorption properties of WO3. The UV-visible absorption properties of the prepared WO3 were analyzed by UV-visible…

Tungsten trioxide applying for thermal insulation dispersion liquid may be synthesized by hydrothermal method using Na2SO4 as an additive. And the influence of the concentration of Na2SO4 on the morphology of WO3 crystals was investigated. It was found that the concentration of Na2SO4 had a certain influence on the grain size of the WO3 product. Influence of Additive Na2SO4 Concentration on Morphology of WO3 Crystals The SEM pattern of tungsten trioxide prepared at different concentrations of Na2SO4 is shown in…

Tungsten trioxide, which is applied for thermal insulation master batch, may be synthesized by hydrothermal method. Using sodium tungstate and hydrochloric acid as raw materials, Na2SO4 (0.5M, 0.125M, and 0.125M) as additive, the synthesized products are all hexagonal tungsten trioxide nanowires. The thickness and length of the synthesized tungsten trioxide powder are different to a certain extent, which indicates that the concentration of Na2SO4 additive has an influence on the grain size of tungsten trioxide, but has no effect on…

Yellow tungsten oxide, for producing thermal insulation master batch, may be synthesized by hydrothermal method using Na2WO4 ? 2H2O and HCl as raw materials, Na2SO4 as an additive. Influence of Additive Concentration on Crystal Form of WO3 XRD image of WO3 prepared at different Na2SO4 concentration is shown in the figure below. As can be seen from the picture, when the concentration of additive Na2SO4 is 0.5M, 0.25M, and 0.125M, the diffraction peaks of WO3 are basically the same, belonging…

Nano tungsten trioxide powder may be applied for preparing thermal insulation dispersion, which is just one of many applications of tungsten trioxide, reflecting the photochromic properties of tungsten trioxide. Tungsten trioxide also has catalytic properties, and therefore can be used as a catalyst, which is widely applied in hydrodesulfurization, SCR denitrification, photocatalysis and the like. Previously, the research on tungsten trioxide has mainly focused on the photocatalytic study of tungsten trioxide of monoclinic phase and tungsten trioxide of triclinic phase.…

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…