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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…

The photocatalytic performance of nonmetal-doped yellow tungsten oxide as a photocatalyst is improved compared to pure WO3. This is because compared with O2p orbitals, nonmetal ions such as C, N, F and S have orbits with relatively high energy. Substituting some of O atoms in semiconductor oxides (such as WO3) with the abovementioned atoms may increase the position of the valence band of the semiconductor, reduce the semiconductor band gap width, and make its absorption edge red shift. More details,…

Nano tungsten needle is often used as a STM probe. And Most of the STM probes are nano tungsten needles. Wherein, nano tungsten needle is made of high-purity tungsten wire with good electrical conductivity and mechanical strength. According to the experts, STM (Scanning Tunneling Microscope) is different from XRD (X-Ray Diffraction), LEED (Low Energy Electron Diffraction) and other reciprocal space imaging using diffraction methods. STM can directly image the conductive sample in real space with atomic resolution, and has achieved…

Tungsten needle has the advantages of high hardness, high strength and strong ductility. And such a needle is not easy to rust and not easy to break with durability. While the tip of a steel needle is brittle and easy to fold, and the diameter of the tip cannot be processed to the micron level. So, tungsten needle is more suitable for inner ear anatomy than steel needle. More details, please visit: http://tungsten.com.cn/tungsten-needles.html With the development of auditory physiology, the…

Do you know how to prepare tungsten needle efficiently? The experts have proposed a method for preparing tungsten needles with the advantages of high degree of automation, good repeatability and high efficiency. More details, please visit: http://tungsten.com.cn/tungsten-needles.html Utilizing the principle of electrochemical reaction, a linear motor is used to drive the tungsten wire up and down in the NaOH corrosion solution, so that the reaction proceeds between the anode tungsten wire and the cathode ring copper electrode. Wherein, the taper…

The quality of tungsten needle is directly related to the detection capability of the scanning electron microscope (STM). The size, shape and chemical identity of the tungsten tip affect not only the resolution and shape of the STM image, but also the electronic state of the measurement. Therefore, the preparation of tungsten tip is particularly important. And it had better to obtain a tungsten tip with a specific radius of curvature. More details, please visit: http://tungsten.com.cn/tungsten-needles.html There are some traditional…

It has been reported that only nano tungsten needle having sharp tip and single atom at the apex can provide stable and reliable atomically resolved imaging for applications of scanning tunneling microscopy (STM). Well, do you know how to prepare such a nano tungsten needle? Differing from the traditional methods, the experts have proposed a new method for preparing nano tungsten needles: More details, please visit: http://tungsten.com.cn/tungsten-needles.html The principle of the new preparation method is: On the basis of electrochemical…