成人a毛片手机免费播放-成人a毛片在线看免费全部播放-成人a视频高清在线观看-成人a视频片在线观看免费-欧美三级中文字幕hd-欧美三极

Yellow tungsten oxide, namely tungsten trioxide or WO3, is a common semiconductor photocatalytic material. Certainly, there are other common semiconductor photocatalytic materials such as TiO2, ZnO, Fe2O3 and Bi2WO6. Wherein, so far, the most studied material is TiO2. However, due to the shortcomings of TiO2 – wide band gap and low conversion efficiency of visible light, people have begun to improve the light utilization efficiency of photocatalysts from two directions: More details, please visit: http://tungsten-oxide.com/index.html 1. Replace the oxygen element…

As a new energy-saving building material, WO3 electrochromic glass has attracted more and more attention. For example, some experts use a WO3 thin film having nanocrystalline mosaic structure as an electrochromic material, and combine it with NiO to assemble an electrochromic device – an electrochromic glass, with high spectral modulation amplitude. More details, please visit: http://tungsten-oxide.com/index.html Such a smart glass can selectively absorb or reflect external heat radiation and internal heat diffusion under the action of an electric field, reducing…

A yellow tungsten oxide composite film uses amorphous tungsten oxide as a matrix, and the SiO2 nanocrystals are uniformly distributed in the amorphous tungsten oxide. Some experts prepared such a composite film with a spectral modulation amplitude at 633 nm of 46%, a coloring time of 8 s, and a fade time of 4.3 s through the following steps: More details, please visit: http://tungsten-oxide.com/index.html Step One: Ultrasonic disperse 0.3g of SiO2 nanocrystalline powder in 6mL of dimethylformamide to form a…

As a photocatalyst, yellow tungsten oxide (WO3) has significant volume effects, surface effects, quantum size effects, and macro quantum tunnel effects, so that it has a wide range of applications in environmental pollution purification and energy regeneration, and therefore it has attracted much attention. Compared with commonly used photocatalysts such as TiO2 and ZnO, yellow tungsten oxide has a smaller forbidden band width and a larger light absorption range, thus it can use visible light (accounting for nearly half of…

The enhancement of photocatalytic performance of yellow tungsten oxide is the improvement of yellow tungsten oxide as a catalyst by compounding it with other semiconductors. Studies have shown that semiconductor recombination improves the photocatalytic performance of photocatalysts by improving the charge separation effect of the system and expanding the corresponding range of its spectrum. More details, please visit: http://tungsten-oxide.com/index.html Studies also found that binary or multiple composite semiconductors, such as TiO2-WO3, show higher photocatalytic activity than single components. For example,…

Studies have shown that nonmetal doping can improve photocatalytic property of yellow tungsten oxide. For example, some experts prepared N-doped tungsten oxide photocatalyst by sol-gel-ammonia-oxygen calcination, and characterized and analyzed the structural properties of the samples by SEM, XRD, XPS, and DRS. They also investigated the effect of N doping on the catalytic activity of yellow tungsten oxide for photolysis of water to make oxygen by comparative experiments. More details, please visit: http://tungsten-oxide.com/index.html The results show that after N doping…

The experts proposed a method to enhance photocatalytic performance of yellow tungsten oxide – surface precious metal deposition. Studies have shown that depositing some precious metals such as Ag, Pd, and Pt on the surface of yellow tungsten oxide catalysts can improve their photocatalytic activity. More details, please visit: http://tungsten-oxide.com/index.html According to the experts, the proper amount of precious metal deposited on the WO3 film surface can form the focal point of fine metal particles. An electron accumulation center is…

Yellow tungsten oxide or WO3 can be used as a photocatalyst. Rare-earth-doped yellow tungsten oxide is WO3 doped with rare earth element that has better photocatalytic performance than pure WO3 powder. Rare earth elements are prone to generate multiple electronic configurations. Their oxides have the characteristics of polymorphism, strong adsorption selectivity and good thermal stability. Also, after doping, the light absorption band of the photocatalyst moves to the visible light region. More details, please visit: http://tungsten-oxide.com/index.html Studies have shown that…

Yellow tungsten oxide, namely tungsten trioxide or WO3, is a kind of semiconductor material having excellent performance and wide applications. As a semiconductor photocatalyst, tungsten trioxide has a wide range of applications in the fields of photolysis of water to produce hydrogen and oxygen, and degradation of organic pollutants or inorganic pollutants. However, the photocatalytic activity of WO3 needs to be further improved to make better use of solar energy. In this regard, the experts have proposed a method to…

Do you know how to improve the photocatalytic property of yellow tungsten oxide? As a photocatalyst, yellow tungsten oxide (tungsten trioxide/WO3) has broad application prospects in photolysis of water, and degradation of organic and inorganic pollutants in the atmosphere and under water. However, the band gap of WO3 is 2.7eV, so that it can only absorb and use the part with less than 450nm wavelength in sunlight, and can only use about 10% of the energy in solar energy. In…