Tungsten Oxide

Global markets advanced nanosized ceramic powder should show a solid, and the growth rate of nano-ceramic powder segment should be more than doubled advanced ceramic powder segment, at 2021 significantly expand its overall market share. Both advanced ceramic and nano-ceramic powders belong to functional ceramics, which can be used in cutting tools to artificial bone implants, mechanical seals, ceramic liners, bearings, thread guides ect.. At present, major efforts are underway to apply structural ceramics to automotive reciprocation engines for wear components. The performance improvements are the driving force behind the continued development and commercialization of high-performance ceramic coatings. These coatings are generally applied to engineering metals, like titanium alloys, tungsten carbides and other ceramics. Oxide ceramics will continue to stay in the leading position. Tungsten oxide being an important functional material is widely applied in electrochromic, toxic gas dete...

Sewer is the integral part of infrastructure in a city which plays an irreplaceable role in the living environment of safety, construction and comfortable. In recent years, the corrosion degradation has caused many social problems, such as the collapse of the road, and thus attracted widespread attention. Sewer corrosion mainly brought out by the oxidation of sulfur-oxidizing bacteria and generated the sulfuric acid and hydrogen sulfide which constantly corrode the pipe surface. In the past, anti-corrosion protection of concrete structures sewer facility is mainly used in the surface coating or a coating method for coating a sheet of resin-based material. These methods have a big challenge in terms of construction; besides, the adhesion and anti-scratch is weak; with relatively short life (only 3 to 6 years). Therefore, a new material with strong anti-corrosion is called. Recently, studies have shown that tungsten oxide and nickel as the antimicrobial agent doped in the concr...

A WO 3 –graphene photocatalyst has been developed that can degrade the dye Rhodamine B almost completely in 15 minutes. This is much faster than the degradation times that can be achieved by bare WO 3  or TiO 2 . The catalyst consists of a porous tungsten oxide  framework with a graphene film and is directly produced via electrospinning. The authors from China and the USA envision that this potent electrocatalyst can be used in environmental applications for the photocatalytic degradation of dye pollutants under visible light. The superior properties of the photocatalyst can be explained by its components and structure. The WO 3  nanoframework efficiently absorbs visible light due to multiple reflections in the pores. A rapid charge transfer to graphene takes place, which avoids charge recombination. Additionally, graphene nanosheets are exposed on the surface. This enables π–π conjugation between graphene and dyes leading to high adsorption rates of the substrate o...

To study the cyclic voltammetry of tungsten oxide thin film electrode, use three-electrode system, sulfuric acid solucion as electrolyte, the property is observed by measuring light current. Below is cyclic voltammograms of WO3 thin film electrode being heat treatment under 450℃ under dark and 500W xenon light source (light strength 100Mw/cm2). Under darkness the polarization current of electrode is small within the scanning range, it is far smaller than anode polarization current under light. Photoelectrochemical reaction under light has good reversibility. Within electric potential 0.35~1.2V（vs.Ag/AgCl）, cathode Pt and anode WO3 thin film electrode reaction is as following: Anode：2OH - + h +  → O 2  ↑+ 2H + Cathode：2H +  + 2e -  → H 2  ↑ When exposed to light, if the applied bias is low, the Fermi level of WO3 is higher, electrolysis solution accepter is easier to trap photo electron near WO3 electrolyte interface of electrode, so the photo current...

Tungsten oxide is an ideal photocatalyst in transition metal oxide which has properties of high catalytic property, low cost, nontoxic and stable. It is now used to degrade organic pollutant such as ethanal, chloroform and fuel into inorganic material. The principle is degrade it into CO 2  and H 2 O, it has high photodegradation efficient and wide application prospect. According to thermodynamic argument, the electron hole on the surface of tungsten oxide oxidizes the OH- and hydrone into OH- (free radical). OH- has strong oxidation capability, it can oxidize most of organic and inorganic pollutant and degrade them into innoxious substance like CO 2  and H 2 O. On the other side, active electron on the surface of tungsten oxide has strong reducing capability, it can reduce and remove heave metal ion in the water. Early research is mainly about applying nano powder semiconductor catalyst in eliminating pollutant in water, but the recovery of catalyst is difficult...

In tungsten oxide smart glass, the electrochromic material changes its opacity: it changes between a colored, translucent state (usually blue) and a transparent state. A burst of electricity is required for changing its opacity, but once the change has been effected, no electricity is needed for maintaining the particular shade which has been reached. Darkening occurs from the edges, moving inward, and is a slow process, ranging from many seconds to several minutes depending on window size. Electrochromic glass provides visibility even in the darkened state and thus preserves visible contact with the outside environment. It has been used in small-scale applications such as rear view mirrors. Electrochromic technology also finds use in indoor applications, for example, for protection of objects under the glass of museum display cases and picture frame glass from the damaging effects of the UV and visible wavelengths of artificial light. Tungsten oxide smart glass with elect...

Tungsten disulfide is a kind of solid inorganic lubricant material. The appearance and physical property is similar to calcium disulfide. The physical and chemical property of tungsten disulfide shows that it can not only be used in the regular lubricant, but also can be applied under certain high temperature, low temperature, high load, high vacuum and corrosion circumstances. It can be used with powder appearance, or can be mixed with lubricant, graphite, metal powder or plastic as compound materials. With the development of scientific technology, the requirement for lubricant material has also been promoted. To solve the lubricant problems, tungsten disulfide has draw people’s attention like other innovative materials. Although there are many methods to prepare tungsten disulfide, the thorough material about its preparing method is rare. The method using tungsten oxide to prepare high purity tungsten disulfide is easy to operate and can assure the quality of the product. ...

Curtains have been around for many years without much improvement. The small advances that have been made, such as motorized shades and smart glass, can be extremely expensive and complex to install. Latest, the smart glass window Wi-Fi enabled has been invented. According to the manufacturer, this kind of film maybe revolutionizes the industry of windows and curtains. So, you may ask: what is digital shade? Digital shade (or smart film) is a technology that allows the color of the film to go from transparent to non-transparent when you apply a current through it, also the level of transparency is able to control. The tungsten oxide smart window film with Wi-Fi will give you the option for privacy on demand by adjusting the amount of light traveling through your glass window; and with the multi-purpose, it can used in the commercial, home use, such as meeting rooms, offices, living room, dining room and bathrooms. The tungsten oxide smart film is based on digital shading te...